Developer
Format, encode, decode, hash and generate — the everyday developer toolbox.
JSON formatterFormat, validate, beautify or minify JSON, with syntax errors pointed at the exact position. Free online JSON viewer that never sends your data anywhere.XML formatterIndent messy XML into something readable, validate its structure, or minify it back down. Free, instant, and the document stays inside your browser.Base64 encode / decodeEncode text, files or images to Base64 and decode them back, with full Unicode support. Free online converter that runs entirely on your own machine.URL encode / decodePercent-encode a URL, path or query string, or decode one back to readable text. Handles Unicode and reserved characters. Free and fully browser-side.JWT decoderDecode the header, payload, claims and expiry of a JSON Web Token. The token is parsed in your browser and never transmitted — safe for real tokens.Hash generatorGenerate MD5, SHA-1, SHA-256 and SHA-512 checksums from text or a file using the browser Web Crypto API. Free, instant, and nothing is ever uploaded.UUID generatorGenerate cryptographically random UUIDs in version 1, 4 or 7, one at a time or thousands in bulk, then copy them in the format you need. Free, no limits.Password generatorCreate strong random passwords with the length and character set you choose, including symbols and unambiguous characters. Generated locally, never stored.QR code generatorCreate a QR code from a link, text, email or Wi-Fi credentials and download it as PNG or SVG. Free, unlimited, no watermark, no sign-up, never expires.QR code readerRead the contents of a QR code from a screenshot, photo or uploaded image. Free online QR scanner — decoding happens in your browser, not on a server.