Free Developer Tools
Fast, private utilities developers use every day. Format JSON, encode and decode data, generate hashes, UUIDs and QR codes, and test regular expressions — nothing is sent to a server.
JSON Formatter & ValidatorBeautify, minify & validate JSON with error line numbers.PopularBase64 Encode / DecodeEncode or decode Base64 text (UTF-8 safe) and files.URL Encode / DecodePercent-encode or decode URLs and query strings.Hash Generator (MD5, SHA-256)MD5, SHA-1, SHA-256, SHA-384 & SHA-512 of text or files.MD5 Hash GeneratorGenerate MD5 checksum of any text or file.Password GeneratorStrong random passwords & passphrases with strength meter.PopularUUID GeneratorGenerate v4 & v7 UUIDs in bulk.QR Code GeneratorQR codes for URLs, WiFi, UPI, vCard & text — PNG/SVG.PopularColor Picker & ConverterHEX ↔ RGB ↔ HSL, shades, palettes & contrast checker.CSS Gradient GeneratorDesign linear & radial gradients and copy CSS.JWT DecoderDecode JWT header & payload and check expiry.NewUnix Timestamp ConverterEpoch ↔ human date in any timezone.NewRegex TesterTest JavaScript regular expressions with live highlighting.NewHTML & CSS MinifierMinify HTML and CSS to speed up your site.NewCaesar Cipher Encoder & DecoderEncrypt/decrypt with Caesar shift & ROT13, brute force.
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