Third-Party Licenses
devpack.app itself is proprietary software — its source code, design, text and logo are © 2026 devpack.app, all rights reserved, and may not be copied or reused without permission.
The site uses the following third-party open-source components, each under its own license. Thank you to their authors.
| Component | Used for | License |
|---|---|---|
| Geist & Geist Mono (Vercel) | Fonts | SIL Open Font License 1.1 |
| js-yaml | JSON ↔ YAML | MIT |
| js-beautify | HTML/CSS/JS formatters | MIT |
| sql-formatter | SQL formatter | MIT |
| node-sql-parser | SQL validator and syntax checkers | Apache-2.0 |
| graphql-js | GraphQL formatter, validator and query builder | MIT |
| sql.js (SQLite compiled to WebAssembly) | SQL playground | MIT (SQLite: public domain) |
| exifr | EXIF viewer & remover | MIT |
| jsQR (Cosmo Wolfe) — github.com/cozmo/jsQR | QR code scanner (fallback when the browser has no built-in detector) | Apache-2.0 |
| Dart Sass (Google) — github.com/sass/dart-sass, bundled with immutable (MIT) | SCSS to CSS compiler | MIT |
| Less.js — github.com/less/less.js | LESS to CSS compiler | Apache-2.0 |
| javascript-obfuscator (Timofey Kachalov) — github.com/javascript-obfuscator | JavaScript obfuscator | BSD-2-Clause |
| Prettier and @prettier/plugin-php — github.com/prettier/prettier | PHP formatter | MIT |
| smol-toml — github.com/squirrelchat/smol-toml | TOML converter | BSD-3-Clause |
| tesseract.js and tesseract.js-core (Project Naptha), Tesseract OCR engine and trained language data (tessdata, Google) — github.com/naptha/tesseract.js | Image to text (OCR), OCR in PDF to Word | Apache-2.0 |
| heic-to (libheif) — unmodified, loaded as a separate file; source: github.com/hoppergee/heic-to | HEIC to JPG converter | LGPL-3.0 |
| jsdiff (diff) | Diff checker | BSD-3-Clause |
| marked | Markdown rendering | MIT |
| DOMPurify | HTML sanitizing | Apache-2.0 / MPL-2.0 |
| Turndown + turndown-plugin-gfm | HTML to Markdown | MIT |
| cRonstrue | Cron explanations | MIT |
| JSZip | ZIP downloads, ZIP creator & extractor, Excel files | MIT (dual MIT/GPLv3) |
| Terser | JavaScript Minifier | BSD-2-Clause |
| SVGO | SVG Optimizer | MIT |
| fflate | Gzip & Deflate compression | MIT |
| pdf-lib | PDF tools (merge, split, watermark, page numbers) | MIT |
| PDF.js (pdfjs-dist) | PDF to JPG and page previews | Apache-2.0 |
| bcrypt.js | Bcrypt and htpasswd generators | MIT / Apache-2.0 |
| Swiper, Splide, Glide.js, Slick, jQuery | Slider generator previews | MIT |
| Ajv | JSON Schema and OpenAPI validation | MIT |
| JSONPath Plus | JSONPath tester | MIT |
| OpenAPI JSON Schemas (via @apidevtools/openapi-schemas) | OpenAPI / Swagger validator | MIT / Apache-2.0 |
| brotli-wasm | Brotli compression | Apache-2.0 |
| qrcode-generator (Kazuhiko Arase) | QR codes | MIT |
| color-name-list (David Aerne) | Colour names | MIT |
| EFF Short Wordlist | Passphrases | CC BY 3.0 US — Electronic Frontier Foundation |
| figlet.js (Patrick Gillespie) and FIGlet fonts | ASCII art generator | MIT; fonts by their respective authors, freely distributable |
| unicode-emoji-json (Mu-An Chiou) | Emoji names & groups | MIT |
| emojilib (Mu-An Chiou) | Emoji search keywords | MIT |
| Unicode Character Database | Character names | Unicode License v3 |
| Express, compression, cheerio, undici | Server | MIT |
| Nodemailer | Server (sending contact-form messages) | MIT-0 |
The color-vision simulation uses the matrices published by Machado, Oliveira & Fernandes (2009). APCA contrast follows the APCA-W3 reference constants.