https://ilham.dev/tags/tools/Recent content in Tools on ilham.devHugo -- gohugo.ioenSun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-add-a-watermark-without-ruining-the-image/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-add-a-watermark-without-ruining-the-image/A watermark should identify or discourage reuse without making the image unreadable. The Watermark Tool tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-add-or-subtract-dates-without-calendar-counting/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-add-or-subtract-dates-without-calendar-counting/Date math is easy to get wrong because months have different lengths and weekends may or may not count. The Date Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-break-a-url-into-parts/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-break-a-url-into-parts/A URL contains several parts: scheme, host, path, query string, and sometimes a fragment. Debugging is easier when those parts are separated. The URL Parser tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-build-a-basic-auth-header-for-testing/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-a-basic-auth-header-for-testing/Basic Auth sends a username and password encoded with Base64 inside an Authorization header. It is not encryption by itself. The Basic Auth Header tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-build-a-basic-nginx-config/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-a-basic-nginx-config/An nginx config is easier to write when I start from the kind of site I am serving: static files, SPA, PHP, or reverse proxy. The nginx Config Generator tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-build-find-command-safely/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-find-command-safely/The find command is one of the most useful Linux commands, but it is also one of the commands I treat with respect. It can search thousands of files very quickly, and with the wrong option it can also delete thousands of files very quickly.https://ilham.dev/posts/how-to-build-an-http-header-block/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-an-http-header-block/Building headers from key/value rows helps avoid typo-heavy manual header blocks. I use HTTP Header Builder for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-build-nginx-reverse-proxy-config/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-nginx-reverse-proxy-config/An nginx reverse proxy config can look intimidating when you are still learning: server { listen 80; server_name app.example.com; location / { proxy_pass http://127.0.0.1:3000; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; } } The config is not random.https://ilham.dev/posts/how-to-build-mock-api-responses-that-look-real-enough/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-mock-api-responses-that-look-real-enough/Mock responses help frontend and integration work move before the real backend endpoint is finished. The API Mock Response Builder tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-build-utm-links-that-are-readable/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-utm-links-that-are-readable/UTM links are normal URLs with tracking parameters added to the end. A plain URL: https://example.com/pricing A UTM URL: https://example.com/pricing?utm_source=newsletter&utm_medium=email&utm_campaign=launch The UTM Builder helps build and parse these links without forgetting a parameter or mixing naming styles.https://ilham.dev/posts/how-to-calculate-age-accurately/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-age-accurately/Age sounds simple, but exact age depends on the date you measure against. The Age Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-calculate-discounts-before-buying/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-discounts-before-buying/Discounts are easier to compare when I calculate the final price instead of only reading the percentage. The Discount Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-calculate-interest-without-hiding-the-assumptions/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-interest-without-hiding-the-assumptions/Interest calculations depend heavily on method: flat, effective, annuity, compound, tiered, or after-tax. I use Interest Calculator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-calculate-loan-payments-before-borrowing/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-loan-payments-before-borrowing/A loan calculator helps me see the monthly payment, total interest, and how extra payments change the schedule. I use Loan Calculator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-calculate-percentages-without-mental-math/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-calculate-percentages-without-mental-math/Percentages are simple until the question changes: percentage of, percentage increase, percentage decrease, and reverse percentage are different tasks. The Percentage Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-check-a-file-hash-before-trusting-a-download/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-a-file-hash-before-trusting-a-download/When I download an installer, ISO image, backup, or release archive, I sometimes see a checksum published next to it: SHA256: 4a1f... That checksum is there so I can check whether my downloaded file is exactly the same file the publisher intended to provide.https://ilham.dev/posts/how-to-read-and-verify-jwt/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-and-verify-jwt/A JWT is one of those strings that looks scary the first time you see it. It often appears in a login response, browser storage, or an API request header:https://ilham.dev/posts/how-to-check-digital-signatures-in-pdfs/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-digital-signatures-in-pdfs/A PDF digital signature is cryptographic metadata. It is not the same thing as an image of a handwritten signature placed on a page. The PDF Signature Checker tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-check-an-iban-before-sending-bank-details/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-an-iban-before-sending-bank-details/An IBAN check can validate structure and check digits, but it does not prove the account belongs to the intended person. The IBAN Validator tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-check-an-ip-address-without-overtrusting-geolocation/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-an-ip-address-without-overtrusting-geolocation/An IP lookup can show useful network context, but it does not prove a person’s exact physical location. The IP & Geolocation Lookup tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-remove-photo-metadata-before-sharing/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-remove-photo-metadata-before-sharing/A photo can contain more than the picture you see. Depending on the camera or phone settings, an image may also include hidden metadata such as: camera model; date and time; lens information; software used to edit the image; GPS location; orientation; comments or colour profile data.https://ilham.dev/posts/how-to-check-basic-pdf-information/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-basic-pdf-information/Before sending or processing a PDF, I often want basic facts: page count, page sizes, metadata, and whether the document looks like the one I expected. The PDF Page Counter and Info tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-check-browser-network-information/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-browser-network-information/Browser network APIs may expose hints about connection type or device context, but availability varies by browser and privacy settings. The Network Info tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-check-common-port-numbers/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-common-port-numbers/Port numbers are labels for network services, but a port number alone does not guarantee what is actually running there. The Port Reference tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-check-keyboard-keycodes-in-the-browser/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-keyboard-keycodes-in-the-browser/Keyboard events expose values such as key, code, and modifier states. They are useful when building shortcuts or input handling. The Keycode Info tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-check-password-strength-without-fooling-yourself/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-password-strength-without-fooling-yourself/Password strength is easy to misunderstand. A password can look complicated but still be weak if it is short or predictable. The Password Strength tool estimates how hard a password may be to guess under stated assumptions.https://ilham.dev/posts/how-to-check-unicode-code-points-in-text/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-unicode-code-points-in-text/Unicode gives characters code points. Looking at those code points helps when text looks identical but behaves differently. The Text to Unicode tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-check-browser-device-information/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-browser-device-information/A browser can reveal useful debugging context such as screen size, user agent hints, language, and platform, but not a complete identity. The Device Information tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-check-whether-rsa-keys-match/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-whether-rsa-keys-match/RSA uses a pair of keys. The private key signs or decrypts. The public key verifies or encrypts. The two keys are related, but the public key should not reveal the private key.https://ilham.dev/posts/how-to-check-domain-whois-without-overreading-it/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-check-domain-whois-without-overreading-it/WHOIS records show registration information about a domain, such as registrar, important dates, status, and sometimes nameservers. The WHOIS Lookup tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-clean-private-info-from-screenshots/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-clean-private-info-from-screenshots/Screenshots are easy to share too quickly. The problem is that a screenshot often contains more information than the one thing I wanted to show. It may include: names; emails; tokens; URLs; browser tabs; file paths; terminal commands; customer data; internal project names.https://ilham.dev/posts/how-to-build-dns-and-network-notes-from-small-tools/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-build-dns-and-network-notes-from-small-tools/Network debugging usually needs more than one clue. DNS, IPs, ports, URLs, and headers each answer a different question. I use Network tools for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-compare-benchmark-results-with-ratios/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-compare-benchmark-results-with-ratios/Benchmark comparison is easier when every result is compared against the fastest or baseline value. The Benchmark Builder tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-compare-json-without-being-distracted-by-formatting/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-compare-json-without-being-distracted-by-formatting/A JSON diff should compare meaning, not indentation. Two JSON documents can look different as text but still contain the same data. The JSON Diff tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-compare-two-text-blocks-line-by-line/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-compare-two-text-blocks-line-by-line/A text diff shows what changed between two blocks of text. It is useful for configs, logs, snippets, and documentation. The Text Diff tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-compare-unit-prices-when-pack-sizes-differ/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-compare-unit-prices-when-pack-sizes-differ/A larger package is not always cheaper. Unit price comparison puts products on the same scale. The Unit Price Comparator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-compress-images-without-making-them-look-bad/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-compress-images-without-making-them-look-bad/Large images make pages slower, emails heavier, and uploads more annoying. The goal of compression is simple: Make the file smaller while keeping the image good enough for its purpose.https://ilham.dev/posts/how-to-convert-curl-commands-into-code/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-curl-commands-into-code/API documentation often gives examples as curl commands: curl -X POST https://api.example.com/users \ -H "Authorization: Bearer TOKEN" \ -H "Content-Type: application/json" \ -d '{"name":"Ana"}' That is useful for testing, but eventually I need the same request in application code.https://ilham.dev/posts/how-to-convert-colors-between-hex-rgb-and-hsl/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-colors-between-hex-rgb-and-hsl/Colour converters help when a design, CSS file, or tool uses a different colour format than the one I have. I use Color Converter for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-convert-fuel-economy-units/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-fuel-economy-units/Fuel economy units can be confusing because km/L and MPG get better when the number is higher, while L/100 km gets better when the number is lower. I use Fuel Economy Converter for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-convert-image-formats-without-losing-what-matters/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-image-formats-without-losing-what-matters/Image formats are trade-offs. The best format depends on whether the image is a photo, graphic, transparent asset, or web upload. The Image Format Converter tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-convert-json-yaml-and-toml-without-changing-meaning/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-json-yaml-and-toml-without-changing-meaning/JSON, YAML, and TOML can represent similar configuration data, but they have different syntax and different traps. The JSON/YAML/TOML converters tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-convert-lists-without-manually-editing-every-line/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-lists-without-manually-editing-every-line/Many small data tasks are just list shape problems: one item per line needs to become CSV, JSON, quoted strings, or an SQL IN list. The List Converter tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-convert-number-bases-without-doing-binary-by-hand/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-number-bases-without-doing-binary-by-hand/Base conversion helps when working with binary flags, hex colours, low-level values, or documentation that uses different number systems. I use Number Base Converter for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-convert-roman-numerals-without-guessing/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-roman-numerals-without-guessing/Roman numerals are simple for small values but easy to mistype when subtractive notation is involved. I use Roman Numerals for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-convert-temperatures-without-mixing-scales/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-temperatures-without-mixing-scales/Temperature conversion is simple, but mistakes happen when the scale is not written clearly. I use Temperature Converter for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-convert-text-case-without-manual-renaming/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-text-case-without-manual-renaming/Case conversion is useful when moving names between code styles, filenames, headings, and API fields. The Case Converter tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-convert-time-zones-for-logs-and-meetings/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-convert-time-zones-for-logs-and-meetings/Time zone mistakes cause confusing incident timelines and missed meetings. I prefer converting explicitly instead of doing the offset in my head. The Time Zone Converter tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-count-words-lines-and-reading-time/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-count-words-lines-and-reading-time/Text statistics help me understand the size of a post, message, or document before publishing it. The Text Statistics tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-create-a-zip-file-in-the-browser/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-create-a-zip-file-in-the-browser/A zip file bundles multiple files into one download. It is useful for small handoffs, attachments, or grouped exports. The Zip Builder tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-create-and-check-hmac-signatures/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-create-and-check-hmac-signatures/HMAC proves that a message was created by someone who knows the shared secret, and that the signed message has not changed. The HMAC Generator tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-create-ascii-art-text-for-terminals/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-create-ascii-art-text-for-terminals/ASCII art text can be useful for terminal banners, README sections, demos, or playful command-line output. The ASCII Text tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-create-svg-placeholder-images/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-create-svg-placeholder-images/SVG placeholders help reserve layout space before final images are ready. I use SVG Placeholder for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-create-whatsapp-click-to-chat-links/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-create-whatsapp-click-to-chat-links/A WhatsApp click-to-chat link opens a conversation with a number and can include a prefilled message. The WhatsApp Link Generator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-debug-cors-without-guessing/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-debug-cors-without-guessing/CORS errors are frustrating because the browser often shows a scary message, but the real cause is usually a small missing header. You may see something like this in the browser console:https://ilham.dev/posts/how-to-decode-outlook-safelinks-before-clicking/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-decode-outlook-safelinks-before-clicking/Outlook SafeLinks wrap a destination URL inside a Microsoft protection URL. Decoding helps reveal where the link wants to go. The SafeLink Decoder tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-edit-html-visually-and-export-clean-markup/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-edit-html-visually-and-export-clean-markup/A small HTML editor is useful when I want formatted content but still need to inspect or export the markup. I use HTML Editor for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-escape-html-entities-before-showing-text/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-escape-html-entities-before-showing-text/HTML entities let text contain characters like <, >, and & without the browser treating them as markup. The HTML Entities tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-estimate-finish-time-from-progress/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-estimate-finish-time-from-progress/An ETA is an estimate based on current progress and speed. It is useful, but it depends on the assumption that the pace stays similar. The ETA Calculator tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-estimate-indonesian-take-home-pay/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-estimate-indonesian-take-home-pay/Take-home pay is not the same as gross salary. Deductions such as tax and BPJS can change what actually arrives in the bank account. I use Take-Home Pay Calculator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-evaluate-math-expressions-with-variables/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-evaluate-math-expressions-with-variables/A math evaluator is useful when the calculation is more than a simple calculator entry but not big enough for a spreadsheet. I use Math Evaluator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-expand-and-read-ipv6-addresses/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-expand-and-read-ipv6-addresses/IPv6 addresses can be compressed, which is convenient for typing but sometimes confusing when comparing or documenting them. The IPv6 Expander tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-extract-coordinates-from-google-maps-links/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-extract-coordinates-from-google-maps-links/A Google Maps link can contain coordinates, place IDs, query text, or tracking parameters. Parsing helps extract the location data you actually need. The Google Maps Link Parser tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-extract-only-the-pages-you-need-from-a-pdf/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-extract-only-the-pages-you-need-from-a-pdf/Sometimes I do not need to send a whole PDF. I only need a few pages. Sending the entire document can be messy, too large, or even risky if other pages contain private information.https://ilham.dev/posts/how-to-filter-docker-logs-without-losing-context/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-filter-docker-logs-without-losing-context/Docker logs can get noisy very quickly. A service may print hundreds or thousands of lines, and the line you need is often buried in the middle. The basic command is:https://ilham.dev/posts/how-to-format-currency-amounts-consistently/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-format-currency-amounts-consistently/Currency formatting is not only adding a symbol. Separators and decimal conventions change by locale. The Currency Formatter tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-format-json-before-debugging-it/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-format-json-before-debugging-it/JSON is easier to debug when it is valid and formatted. A formatter turns one long line into a structure humans can read. The JSON Formatter tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-format-lines-into-commas-quotes-and-sql-lists/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-format-lines-into-commas-quotes-and-sql-lists/A lot of cleanup work starts as one item per line and needs to become a comma-separated list, quoted list, JSON-ish array, or SQL IN clause. The Line Comma Formatter tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-format-sql-before-reviewing-a-query/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-format-sql-before-reviewing-a-query/SQL is easier to review when clauses and joins are on separate lines instead of one long string. The SQL Prettify tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-format-whatsapp-messages-before-sending/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-format-whatsapp-messages-before-sending/WhatsApp supports simple text formatting, but it is easy to misplace the symbols in a longer message. The WhatsApp Message Formatter tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-format-xml-before-reading-it/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-format-xml-before-reading-it/XML becomes hard to read when it is minified. Formatting makes the tag structure visible so I can see parents, children, attributes, and text nodes. The XML Formatter tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-generate-an-ipv6-ula-prefix/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-generate-an-ipv6-ula-prefix/IPv6 ULA prefixes are for private internal networks, similar in spirit to private IPv4 ranges but designed differently. I use IPv6 ULA Generator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-generate-test-mac-addresses-safely/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-generate-test-mac-addresses-safely/Generated MAC addresses are useful for examples, tests, lab configs, and mock network data. The MAC Address Generator tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-generate-lorem-ipsum-without-leaking-real-copy/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-generate-lorem-ipsum-without-leaking-real-copy/Placeholder text is useful when I need to test layout without using unfinished or private real content. The Lorem Ipsum tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-generate-random-tokens-with-enough-entropy/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-generate-random-tokens-with-enough-entropy/A good token should be random enough that guessing it is unrealistic. The Token Generator tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-generate-sql-inserts-from-csv-or-json/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-generate-sql-inserts-from-csv-or-json/Sometimes I have a small table of data and need to insert it into a database. For a few rows, writing SQL by hand is fine. For many rows, it is boring and error-prone.https://ilham.dev/posts/how-to-generate-ssh-keys-safely/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-generate-ssh-keys-safely/An SSH key pair has two parts: a private key that stays with you, and a public key that you can place on servers in authorized_keys. The SSH Key Generator tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-generate-uuids-for-test-data/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-generate-uuids-for-test-data/A UUID v4 is a random-looking identifier that is useful when many systems need to create IDs without asking a central server first. The UUID Generator tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-look-up-a-mac-address-vendor/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-look-up-a-mac-address-vendor/A MAC vendor lookup uses the first part of a MAC address to identify the organization that registered that prefix. The MAC Address Lookup tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-look-up-http-status-codes-during-debugging/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-look-up-http-status-codes-during-debugging/HTTP status codes are short signals from a server. They tell me whether a request succeeded, redirected, failed on the client side, or failed on the server side. The HTTP Status Codes tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-look-up-mime-types-for-files/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-look-up-mime-types-for-files/A MIME type tells software what kind of content a file or response contains. The MIME Types tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-make-a-qr-code-that-people-can-actually-scan/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-make-a-qr-code-that-people-can-actually-scan/A QR code is only useful if people can scan it reliably. The content, margin, contrast, and printed size all matter. The QR Code Generator tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-make-a-simple-sticker-image/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-make-a-simple-sticker-image/A sticker tool is useful when I need a quick PNG with text, shape, or simple cutout styling. I use Sticker Maker for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-make-a-wifi-qr-code-for-guests/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-make-a-wifi-qr-code-for-guests/Typing a Wi-Fi password is annoying, especially when the password is long and secure. A Wi-Fi QR code makes the process easier: guests scan the code and their phone can join the network.https://ilham.dev/posts/how-to-make-url-slugs-from-titles/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-make-url-slugs-from-titles/A slug turns a title into a URL-friendly piece of text, usually lowercase words separated by hyphens. The Slugify tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-mask-part-of-a-string-before-sharing-it/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-mask-part-of-a-string-before-sharing-it/String masking hides part of a value while keeping enough context to recognize it later. The String Obfuscator tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-merge-pdfs-in-the-right-order/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-merge-pdfs-in-the-right-order/Merging PDFs sounds simple until the final file has the pages in the wrong order. That is the mistake I try to avoid. The PDF Merger joins multiple PDF files in the browser.https://ilham.dev/posts/how-to-normalize-email-addresses-without-breaking-login/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-normalize-email-addresses-without-breaking-login/Email normalization reduces duplicate-looking addresses, but different providers and products have different rules. The Email Normalizer tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-open-a-csv-file-without-spreadsheet-surprises/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-open-a-csv-file-without-spreadsheet-surprises/A CSV viewer helps inspect tabular data before importing it into a database, spreadsheet, or script. The CSV Viewer tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-parse-a-websocket-frame/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-parse-a-websocket-frame/Most WebSocket debugging happens at the message level, but sometimes a raw frame needs to be decoded. I use WebSocket Frame Parser for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-parse-an-indonesian-nik-carefully/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-parse-an-indonesian-nik-carefully/An Indonesian NIK contains structured hints, but parsing it does not verify that a person is who they claim to be. The NIK Parser tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-parse-logs-before-searching-randomly/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-parse-logs-before-searching-randomly/Logs become easier to investigate when they are split into fields instead of treated as one giant wall of text. The Log Parser tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-parse-phone-numbers-before-saving-them/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-parse-phone-numbers-before-saving-them/Phone numbers are easier to store and compare when they are normalized to a consistent international format. The Phone Parser tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-pick-and-copy-emoji-without-opening-a-chat-app/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-pick-and-copy-emoji-without-opening-a-chat-app/An emoji picker is useful when I know the idea but not the exact character or keyboard shortcut. The Emoji Picker tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-pick-random-port-numbers-for-local-development/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-pick-random-port-numbers-for-local-development/A random port is useful for local development, examples, temporary services, and avoiding conflicts with common ports. The Random Port Generator tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-plan-a-small-ipv4-subnet/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-plan-a-small-ipv4-subnet/A subnet is a range of IP addresses. CIDR notation like 192.168.1.0/24 describes the size of that range. The IPv4 Subnet Calculator tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-preview-link-cards-with-open-graph/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-preview-link-cards-with-open-graph/When you paste a link into Slack, WhatsApp, Telegram, LinkedIn, or another app, it often turns into a card with a title, description, and image. That preview does not appear by magic.https://ilham.dev/posts/how-to-preview-markdown-as-html/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-preview-markdown-as-html/Markdown is convenient to write, but I still want to preview the rendered result before publishing. The Markdown to HTML tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-read-a-curl-command-before-running-it/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-a-curl-command-before-running-it/A curl command is an HTTP request written for the terminal. Before running one from documentation or chat, I want to know what it will send. The curl Tester tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-read-a-user-agent-string/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-a-user-agent-string/A user-agent string can hint at browser, engine, operating system, and device, but it is messy and sometimes intentionally misleading. The User Agent Parser tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-read-an-openapi-file-before-using-an-api/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-an-openapi-file-before-using-an-api/An OpenAPI file is machine-readable API documentation. It describes endpoints, inputs, outputs, and authentication expectations. The OpenAPI Viewer tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-read-cron-schedules/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-cron-schedules/Cron is simple once it is explained, but the syntax is not something I try to memorise perfectly. A cron expression often looks like this: 0 2 * * * If you do not read cron every day, that line is not obvious.https://ilham.dev/posts/how-to-read-email-headers/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-email-headers/An email header is the technical history of a message. It can show where the message claimed to come from, which servers handled it, and whether authentication checks passed. The visible email body can be misleading.https://ilham.dev/posts/how-to-read-http-headers/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-http-headers/HTTP headers are small pieces of metadata sent with a request or response. They can explain things that are not visible in the page body. When a website or API behaves strangely, I often look at the headers first.https://ilham.dev/posts/how-to-read-text-as-binary-without-overthinking-it/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-text-as-binary-without-overthinking-it/Text can be represented as bytes, and bytes can be shown as binary. The interesting part is that not every character is one byte. The Text to Binary tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-read-unix-timestamps-without-guessing-seconds-or-milliseconds/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-unix-timestamps-without-guessing-seconds-or-milliseconds/A timestamp bug often starts with one question: is this value in seconds or milliseconds? Getting that wrong can move dates to 1970 or far into the future. The Timestamp Converter tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-read-yaml-without-getting-lost-in-indentation/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-read-yaml-without-getting-lost-in-indentation/YAML is readable when indentation is correct and confusing when it is not. A viewer helps validate and inspect the structure. The YAML Viewer tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-record-a-short-camera-video-in-the-browser/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-record-a-short-camera-video-in-the-browser/A browser camera recorder is useful for quick tests, short clips, and checking whether the camera works without installing software. I use Camera Recorder for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-record-microphone-audio-for-a-quick-test/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-record-microphone-audio-for-a-quick-test/A microphone test helps confirm the browser can access the mic and the input level is usable. I use Microphone Recorder for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-remove-a-simple-image-background/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-remove-a-simple-image-background/Simple background removal works best when the subject is clearly separated from a plain background. The Background Remover tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-resize-a-photo-to-a-target-file-size/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-resize-a-photo-to-a-target-file-size/Sometimes the requirement is not just smaller. It is a specific limit, like under 500 KB for an upload form. The Photo Resizer by Target Size tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-sort-env-files-without-moving-comments-to-the-wrong-place/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-sort-env-files-without-moving-comments-to-the-wrong-place/A messy .env file makes configuration harder to review. Sorting helps, but comments and duplicates need care. The .env Key Sorter tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-spell-indonesian-numbers-for-invoices/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-spell-indonesian-numbers-for-invoices/Spelling numbers in words helps on invoices, receipts, and payment documents where the amount needs to be readable. The Number to Words tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-spell-things-with-the-nato-alphabet/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-spell-things-with-the-nato-alphabet/The NATO alphabet maps letters to words like Alpha, Bravo, and Charlie so spoken spelling is easier to understand. The NATO Alphabet tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-spot-common-typos-in-indonesian-text/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-spot-common-typos-in-indonesian-text/A typo spotter is a final pass tool. It catches small issues that are easy to miss when I already know what I meant to write. The Typo Spotter tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-style-a-qr-code-without-breaking-scanning/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-style-a-qr-code-without-breaking-scanning/QR codes can be styled, but scanning reliability comes first. A beautiful QR code that fails to scan is just decoration. The QR Code Editor tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-test-regex-before-using-it/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-test-regex-before-using-it/Regex is powerful, but it is also easy to get almost right. “Almost right” is the problem. A regex can match too much, too little, or the right thing in your test but the wrong thing in production.https://ilham.dev/posts/how-to-test-websockets-from-the-browser/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-test-websockets-from-the-browser/WebSockets keep a connection open so client and server can exchange messages in real time. The WebSocket Tester tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-test-an-http-request-before-writing-code/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-test-an-http-request-before-writing-code/Before I put an API call into code, I like to prove the request works by itself: URL, method, headers, body, and response. The HTTP Request Tester tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-test-grpc-when-http-tools-are-not-enough/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-test-grpc-when-http-tools-are-not-enough/gRPC APIs do not look like normal REST endpoints. Instead of paths like /users, you call service methods with typed messages. The gRPC Tester tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-test-webhooks-safely/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-test-webhooks-safely/A webhook is a simple idea: one system sends an HTTP request to another system when something happens. For example: Stripe sends a webhook when a payment succeeds; GitHub sends a webhook when someone pushes code; Shopify sends a webhook when an order is created.https://ilham.dev/posts/how-to-hash-passwords-with-bcrypt/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-hash-passwords-with-bcrypt/Passwords should not be stored as plain text. If a database leaks, plain text passwords immediately become everyone else’s problem too. For password storage, I want a password hashing function such as bcrypt.https://ilham.dev/posts/how-to-understand-bip39-seed-phrases/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-understand-bip39-seed-phrases/A BIP39 mnemonic is a human-readable backup for wallet seed material. Anyone who has the words can often control the wallet. The BIP39 Mnemonic tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-use-ssh-tunnel-builder/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-ssh-tunnel-builder/SSH tunnels are powerful, but the flags are not friendly at first sight: ssh -L 8080:localhost:80 user@example.com The command is short, but the meaning is not obvious. Which machine is localhost?https://ilham.dev/posts/how-to-turn-docker-run-into-compose/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-docker-run-into-compose/A docker run command is fine when it is short. But after a few ports, volumes, and environment variables, it becomes hard to read and easy to break. You may see something like this:https://ilham.dev/posts/how-to-turn-a-small-file-into-base64/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-a-small-file-into-base64/Base64 can turn a file into text, which is useful for small embedded assets or debugging data URIs. The Base64 File tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-turn-an-ip-range-into-cidr-blocks/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-an-ip-range-into-cidr-blocks/Many firewalls and cloud tools want CIDR blocks, but humans often receive IP ranges with a start and end address. The IPv4 Range Expander tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-turn-csv-into-json-without-breaking-the-data/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-csv-into-json-without-breaking-the-data/CSV is easy to open in a spreadsheet. JSON is easy to use in APIs and code. Moving between them sounds simple, but small details can break the data. The CSV and JSON Converter helps convert CSV to JSON and JSON back to CSV in the browser.https://ilham.dev/posts/how-to-turn-json-into-csv-for-spreadsheets/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-json-into-csv-for-spreadsheets/CSV is a table, while JSON can be deeply nested. Conversion works best when the JSON is an array of similar objects. The JSON to CSV tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-turn-long-words-into-numeronyms/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-long-words-into-numeronyms/A numeronym shortens a long word by keeping the first and last letter and replacing the middle with a number. The Numeronym tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-turn-plain-text-into-a-pdf/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-plain-text-into-a-pdf/Plain text is easy to edit, but PDF is easier to send when layout needs to stay stable. The Text to PDF tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-turn-terminal-tables-into-markdown-or-csv/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-turn-terminal-tables-into-markdown-or-csv/Terminal output is readable to humans, but often awkward to paste into docs, spreadsheets, or issue reports. The CLI Table Converter tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-understand-chmod-permissions/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-understand-chmod-permissions/chmod 755 is one of those commands many people copy before they fully understand it. It works often enough that it becomes a habit, but file permissions are worth understanding properly.https://ilham.dev/posts/how-to-use-otp-codes-without-mystery/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-otp-codes-without-mystery/Most authenticator apps use TOTP: a short code generated from a shared secret and the current time. The OTP Generator tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-understand-snap-bi-asymmetric-signature/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-understand-snap-bi-asymmetric-signature/SNAP BI signatures can feel confusing because they combine several ideas at once: HTTP method; URL path; request body hash; timestamp; RSA private and public keys; a signature header. When all of those appear together, it is easy to get lost.https://ilham.dev/posts/how-to-url-encode-text-without-breaking-query-strings/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-url-encode-text-without-breaking-query-strings/URLs can only safely contain certain characters. URL encoding turns spaces, symbols, and non-ASCII text into percent-encoded form. The URL Encoder tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-use-a-git-cheatsheet-without-copying-blindly/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-a-git-cheatsheet-without-copying-blindly/A Git cheatsheet is useful when I remember the task but not the exact command. I still read the command before running it. The Git Cheatsheet tool helps me inspect the input and output without writing a one-off script first.https://ilham.dev/posts/how-to-use-a-javascript-playground-safely/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-a-javascript-playground-safely/A JavaScript playground is useful for small experiments, but code pasted from unknown places can still be risky. I use JavaScript Playground for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-use-json-viewer-for-large-api-responses/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-json-viewer-for-large-api-responses/A JSON viewer is for exploring structure. It helps me see objects, arrays, nested fields, and repeated records without reading one long block of text. The JSON Viewer tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.https://ilham.dev/posts/how-to-use-a-random-picker-fairly/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-a-random-picker-fairly/A random picker is only as fair as the input list and the random process used. I use Random Generator for the quick version of this task, then I review the output before relying on it.https://ilham.dev/posts/how-to-use-a-stopwatch-with-laps-for-small-tests/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-a-stopwatch-with-laps-for-small-tests/A chronometer is useful for quick manual timing when a full benchmark is unnecessary. The Chronometer tool handles the repetitive part so I can focus on checking whether the result makes sense.https://ilham.dev/posts/how-to-use-aes-encryption-for-text/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-aes-encryption-for-text/AES is for keeping text confidential. It is different from hashing: encrypted text is meant to be decrypted later with the right key, while a hash is not meant to be reversed.https://ilham.dev/posts/how-to-use-base64-without-calling-it-encryption/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-base64-without-calling-it-encryption/Base64 changes bytes into text that is safe to copy through systems that expect plain characters. It is encoding, not encryption. The Base64 Text tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-use-dns-lookup-when-a-domain-does-not-work/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-dns-lookup-when-a-domain-does-not-work/DNS is the phonebook layer that turns names into records such as IP addresses, mail servers, and verification TXT values. The DNS Lookup tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-use-grep-without-fighting-regex/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-grep-without-fighting-regex/grep is the command I use when I know some text exists somewhere, but I do not remember which file contains it. The basic idea is simple: grep "database" app.log Plain meaning:https://ilham.dev/posts/how-to-use-jsonpath-to-find-data/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-jsonpath-to-find-data/Small JSON is easy to read. Large JSON is different. A real API response can contain nested objects, arrays, metadata, and fields you do not care about. JSONPath helps ask focused questions like:https://ilham.dev/posts/how-to-edit-text-with-sed-safely/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-edit-text-with-sed-safely/sed is useful when I need to change text from the command line. It can replace words, delete matching lines, or print only the lines I care about. It can also edit many files quickly, which means I do not run it carelessly.https://ilham.dev/posts/how-to-use-ulids-when-sortable-ids-help/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-ulids-when-sortable-ids-help/A ULID is an identifier that includes a timestamp part, so generated IDs sort roughly by creation time. The ULID Generator tool helps with the mechanical part, but I still check the result before using it somewhere real.https://ilham.dev/posts/how-to-use-xargs-without-surprises/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-use-xargs-without-surprises/xargs is useful when one command prints a list and another command needs that list as arguments. A simple example: printf '%s\n' one two three | xargs echo Output: one two three That looks too simple to matter, but xargs becomes powerful when the input comes from commands like find, grep, or printf.https://ilham.dev/posts/how-to-validate-json-with-a-schema/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-validate-json-with-a-schema/When an API receives JSON, it usually expects a certain shape. If one field is missing or one value has the wrong type, the request may fail. A JSON Schema describes that expected shape.https://ilham.dev/posts/how-to-write-a-dockerfile-without-copying-random-examples/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-write-a-dockerfile-without-copying-random-examples/A Dockerfile is a recipe for building an image. The clearer the recipe, the easier the container is to rebuild and debug. The Dockerfile Builder tool gives me a safe place to test the idea before I put it into a script, server, or production workflow.https://ilham.dev/posts/how-to-write-meta-tags-for-a-page/Sun, 27 Sep 2026 00:00:00 +0700https://ilham.dev/posts/how-to-write-meta-tags-for-a-page/Meta tags help browsers, search engines, and social platforms understand a page. They do not replace good content, but they help describe it. The Meta Tag Generator tool is useful because it lets me check the result in a small, controlled place before I use it in a bigger workflow.