Tools
- How I check and remove photo metadata before sharing an image
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 …
- How I check basic PDF information before sending a document
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 …
- How I check browser network information without overreading it
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 …
- How I check common port numbers when debugging a service
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 …
- How I check keyboard key codes 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 …
- How I check password strength without fooling myself
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 …
- How I check Unicode code points when text looks weird
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 …
- How I check what the browser says about my device
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 …
- How I check whether an RSA public key and private key belong together
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.
- How I check WHOIS records without overreading them
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 …