Developer Tools
Convert, encode, validate and generate what comes up daily in the terminal: JSON, JWT, base64, hashes, regex, cron and permissions. All in your browser.
13 tools
.gitignore Generator
Build your .gitignore from 312 official templates, including Bun, Tauri, Expo, NestJS and Cursor. It explains what each rule ignores and tests whether a path is excluded.
OpenBarcode Generator
Create EAN-13, EAN-8, UPC-A, Code 128, Code 39, ITF-14 and Codabar barcodes. It works out the check digit for you and downloads as SVG or PNG. All in your browser.
OpenCSS Beautifier
Format and unminify CSS, SCSS and Less with Prettier. Choose indentation and line width, then download the result. All in your browser, nothing uploaded.
OpenDocker Compose Validator
Validate your compose.yaml against the official Compose schema and catch key typos, wrong types and YAML errors, with the exact line. All in your browser.
OpenHTML Beautifier
Format and indent HTML and Vue templates with Prettier, including embedded CSS and JavaScript. Choose indentation and line width. All in your browser.
OpenHTML Minifier
Minify your HTML by removing all unnecessary characters.
OpenMexican ID Validator — RFC, CURP, CLABE, NSS
Check whether an RFC, CURP, CLABE or NSS is correct. Detects the type on its own, verifies the check digit and breaks down every part of the ID. All in your browser.
OpenUnix Timestamp Converter
Convert Unix timestamps to a readable date (ISO, UTC, local and relative time) and dates back to a timestamp, with seconds/milliseconds detection and a live clock. No sign-up.
OpenUpgrade Checker (Node 26, Laravel 13 and TypeScript 7)
Paste your package.json, composer.json or tsconfig.json and see what breaks moving to Node 26, Laravel 13 or TypeScript 7, on which line, and the fix.
OpenURL Encoder and Decoder
Encode and decode URLs and parameters instantly, with a component or full-URL variant. Includes a query string parser. No sign-up.
OpenCSS Minifier
Free online CSS minifier: minify CSS in your browser with csso. Strips whitespace and comments, merges rules without changing the cascade, keeps /*! licenses */ and calc(). No upload.
OpenJSON Validator and Beautifier
Validate, beautify and format JSON online for free. Instantly spot syntax errors, indent or minify your JSON and copy it with one click.
OpenSQL Formatter / Beautifier
Format and beautify your SQL code with ease.
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