Developer & Web Tools
Format JSON, encode and decode Base64 and URLs, generate hashes and UUIDs, test regular expressions and convert colours and timestamps. All of it runs in your browser, so your data is never uploaded.
JSON Formatter & ValidatorFormat, minify and validate JSON with clear error messagesBase64 Encoder & DecoderEncode text to Base64 or decode it back, with Unicode supportURL Encoder & DecoderEncode or decode URLs and read query strings as a clear listUnix Timestamp ConverterConvert Unix time to a date and back, in any time zoneUUID GeneratorGenerate random version 4 UUIDs in bulk, up to 100 at a timeHash Generator (SHA-256, SHA-1, SHA-512)Create SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any textRegex TesterTest regular expressions with live highlighting, groups and replaceColour Converter & PickerConvert HEX, RGB and HSL colours and check text contrastJWT DecoderRead the header and payload of a JSON Web Token without sending it anywhereText Diff CheckerCompare two texts line by line and see what was added or removedHTML, CSS & JavaScript MinifierShrink code by removing comments and extra spaces, with a size reportLorem Ipsum GeneratorGenerate placeholder text by paragraphs, sentences or wordsNumber Base ConverterConvert between binary, octal, decimal, hex and any base from 2 to 36Cron Expression ExplainerTurn a cron schedule into plain English and see the next run times
About developer & web tools
Everyday helpers for developers and web builders: format and validate JSON, encode and decode Base64 and URLs, generate UUIDs and hashes, test regular expressions, convert colours and timestamps, decode JWTs, compare text, minify code, generate placeholder text and explain cron schedules. Everything runs in your browser, so the code, tokens and text you paste are never uploaded or stored.