Developers
JSON, YAML, regex, encoding, hashes and generators.
34 tools
Text ↔ binaryConvert text to binary, hexadecimal or decimal, and back.Lorem IpsumGenerate placeholder text for mockups — paragraphs, sentences or words.Compare two textsSee at a glance what was added, removed or moved between two versions.Data size converterBytes, KB, MB, GB, TB — and their binary KiB, MiB, GiB counterparts.Number base converterBinary, octal, decimal, hexadecimal and any base from 2 to 36.Unix timestamp converterTimestamp ↔ readable date, in seconds or milliseconds, UTC and local time.Hash generatorMD5, SHA-1, SHA-256, SHA-512 of a text or a file, plus checksum verification.DNS lookupLook up the A, MX, TXT and NS records of a domain in an instant.HTTP status and headersResponse code, redirects and security headers of any web page.IPv4 subnet calculatorMask, network address, usable range and host count from a CIDR notation.JSON formatter and validatorIndent, minify, sort and validate JSON — errors are pinpointed exactly.JSON ↔ YAMLConvert both ways between JSON and YAML.JSON → XMLTurn a JSON structure into indented XML.Flatten JSONTurn nested JSON into a flat list of key → value paths.Base64 encoder / decoderEncode or decode text in Base64, accented characters included.URL encoder / decoderEscape or unescape the special characters of a URL or parameter.HTML entitiesEscape or decode HTML special characters.JWT decoderRead the header and payload of a JWT, expiry included.SQL formatterLay a SQL query out over readable lines.CSS formatterIndent or minify a stylesheet.URL parserBreak a URL into protocol, host, path and parameters.Cron expression explainerTurn a cron expression into plain language, with the next run times..gitignore generatorAssemble a .gitignore from the stacks you use.Colour converterHEX, RGB, HSL, HSV and CMYK for one colour, plus its shade range.WCAG contrast checkerIs your text readable on that background? Check the AA and AAA accessibility thresholds.CSS gradient generatorCreate a linear, radial or conic gradient and copy the CSS.CSS box-shadow generatorDial in a shadow visually and take away the CSS rule.CSV → JSONTurn a CSV table into structured JSON, with type detection.JSON → CSVConvert an array of JSON objects into Excel-ready CSV.CSV → SQL statementsGenerate the INSERT statements matching your table.UUID generatorRandom v4 UUIDs, or short identifiers that sort by time.Fake data generatorConsistent fictional identities to test an app or a form.Random string generatorTokens, API keys, identifiers — in the exact format you need.QR code generatorCreate a QR code for a link, a contact, an email or any text, and download it as PNG or SVG.