Free Developer Tools
Utilities for developers. These run entirely in your browser, so code, tokens, and payloads you paste in are never uploaded.
Convert text to Base64 and back. Works with full Unicode via UTF-8, and runs entirely in your browser so nothing is uploaded.
Paste JSON to pretty-print it, validate it, or minify it. Errors are reported with a clear message so you can find the problem fast.
Turn a link or any text into a QR code and download it as a PNG. It’s generated in your browser — your data is never uploaded — and there’s no watermark.
Convert a Unix timestamp to a readable date — in both UTC and your local time — or turn a date into a timestamp. Handles seconds and milliseconds.
Encode text for safe use in a URL, or decode a percent-encoded URL back to readable text. Runs in your browser with full Unicode support.