Tools
- How I format XML before trying to understand 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 …
- How I generate an IPv6 ULA prefix for a private network
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 …
- How I generate MAC addresses for tests without colliding with real devices
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.
- How I generate placeholder text 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.
- How I 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.
- How I generate SQL INSERT statements 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.
- How I generate SSH keys without losing track of what each file is
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 …
- How I generate UUIDs for test data and identifiers
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 …
- How I look up a MAC address vendor from the first bytes
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.
- How I 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 …