Ten developer utilities.
One tab. Zero servers.
A fast, private suite of everyday developer tools — JSON formatting, regex testing, UUID generation, and seven more. No sign-up. No uploads. Nothing leaves your browser.
JSON Formatter
Beautify, validate, and minify JSON
Base64 Encoder
Encode and decode Base64
URL Encoder
Encode and decode URL components
Regex Tester
Test regular expressions in real time
Timestamp Converter
Unix timestamps to human dates
UUID Generator
Generate cryptographic UUID v4
Password Generator
Strong, cryptographically random passwords
JWT Decoder
Inspect JSON Web Tokens safely
Diff Checker
Compare text line by line
Minifier
Shrink CSS, HTML, and JSON
Built for people who care where their data goes.
Nothing is uploaded
Every tool runs entirely in your browser using standard JavaScript primitives. Open DevTools and watch the Network tab — you will see zero requests while you work.
No accounts, ever
There is no sign-up, no login, no email gate, no trial period. Open a tab, use the tool, close the tab. That is the whole product.
Genuinely fast
No loading spinners, no "processing" screens. Tools respond instantly because the work happens locally. One static HTML page per tool, pre-rendered for sub-second load times.
Works offline
Once a tool page has loaded, you can disconnect your internet and keep using it. Useful on planes, in coffee shops, or when your network decides to have a bad minute.
Keyboard-friendly
Every action you care about is a tab or shortcut away. The tools are designed to live in your workflow rather than interrupt it.
Safe for secrets
Paste API keys, tokens, and customer data without worrying about server logs, retention, or third-party access. The browser is the only place your data ever goes.