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Tools

Developer Utilities

For developers

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MD5, SHA, Base64, Unix time and HEX in one place.

Time, strings and encoding are computed in your browser. Hashes are computed on our server — the string is never stored or logged.

What your browser reveals

The data every site receives automatically when a page opens.

User-Agent A string with the browser name, version and OS. Sites use it to decide which version of a page to serve.
Screen resolution Window and screen size. Needed for responsive layouts, but it also helps identify you.
Language and time zone These let a site pick the interface language and show times in your zone.
Format support Whether the browser understands webp and modern fonts. It decides which file the server sends.

Why a developer needs this

A bug only one client sees The site works everywhere except for them. The browser data quickly shows what differs.
Checking responsiveness Real window dimensions instead of guesses. Especially useful on unusual screens.
Pre-launch testing Confirming the site detects language correctly and serves the right version.
Supporting a user Instead of asking “what browser version do you have”, ask them to send this page.

FAQ

Can MD5 be decrypted back into text?
No. A hash is a one-way transformation: the same string always produces the same digest, but recovering the string from the digest is mathematically impossible. Services promising “MD5 decryption” actually look your hash up in enormous precomputed tables. That works for simple passwords, which is exactly why MD5 has long been unsuitable for storing them — use bcrypt or Argon2 instead.
Which algorithm should I use today?
For file integrity, SHA-256 is the current standard. For passwords, general-purpose hashes are unsuitable altogether: you need bcrypt, scrypt or Argon2, which are deliberately slow. Keep MD5 and SHA-1 only where legacy compatibility demands it — practical collisions have been found for both, so they cannot be relied on for security.
How is Base64 different from encryption?
Base64 is an encoding, not encryption. It simply converts arbitrary bytes into a set of safe characters so they can travel as text: in an email, in JSON, in a URL. There is no key and anyone can decode it in a second. Hiding passwords or tokens in Base64 is therefore pointless — it is not protection, just a different way of writing the same data.
What is a Unix timestamp?
It is the number of seconds elapsed since 1 January 1970 UTC. The format is convenient because it does not depend on time zones or local date formats, which is why databases, APIs and logs use it. Watch the length: 10 digits means seconds, 13 means milliseconds. Our tool detects this automatically.
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