Free Text & Developer Tools Online
55 free tools
Everyday utilities for developers and writers: format and validate JSON or XML, decode a JWT, encode Base64 and URLs, test a regular expression, minify CSS and JavaScript, generate UUIDs, hashes and strong passwords, or count words and change text case.
Most of these run entirely in your browser, which makes them safe to use with tokens and snippets you would rather not paste into a server.
Paste, get the result, copy it back — there is nothing to install and no account needed, so they also work on a locked-down work laptop or a phone. Bookmark the ones you use often — each opens straight to the tool.
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Frequently asked questions
Is it safe to paste a JWT here?
The decoder runs in your browser and does not send the token anywhere. Even so, avoid pasting live production tokens into any website.
Why does my JSON not validate?
The usual causes are a trailing comma, single quotes instead of double quotes, or an unquoted key. JSON Formatter points to the line with the problem.
Is Base64 a form of encryption?
No. Base64 only changes how data is represented; anyone can decode it. Use it for transport, not for hiding information.
How strong should a password be?
Long and random beats clever: 14 or more characters from a password generator, unique to each account.