Developer Tools
Format, encode, convert and debug data without leaving your browser.
9 tools Runs locally
Developer Tools Base64 Encoder & Decoder Encode text to Base64 or decode Base64 back to text, with full UTF-8 and URL-safe support. Runs locally in your browser — no upload, no signup. Developer Tools Hash Generator Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text in your browser. Compare digests and copy them instantly. Developer Tools JSON to CSV Converter Convert JSON arrays to CSV and CSV back to JSON in your browser. Handle quotes, delimiters and nested values, then copy or download the result. Developer Tools JSON Formatter & Validator Format, validate and minify JSON in your browser. Choose 2 or 4-space indentation, sort keys, and copy the result instantly. Free, private, no signup. Developer Tools JWT Decoder Decode a JSON Web Token to inspect its header, payload, signature and expiry claims. Nothing is uploaded and no signature is trusted. Developer Tools Unix Timestamp Converter Convert Unix timestamps to readable dates and back. Supports seconds and milliseconds, UTC and your local time zone, with a live current timestamp. Developer Tools URL Encoder & Decoder Encode or decode URLs and query strings with correct UTF-8 percent encoding. Switch between component and full-URL modes, all in your browser. Developer Tools UUID Generator Generate random UUID v4 and time-ordered UUID v7 in bulk, then copy or download them as text. Runs locally with the Web Crypto API. Developer Tools YAML to JSON Converter Convert YAML to JSON and JSON to YAML in your browser. Keep nested structures, choose the indent size and see YAML errors with a line number.