Licenças
Última atualização: 28 de outubro de 2026
Componentes de código aberto
Os motores por trás das ferramentas são construídos sobre bibliotecas de código aberto, usadas sob licenças permissivas e listadas abaixo com suas fontes. Nosso próprio código (os fluxos de processamento, a interface e o site) não é de código aberto, salvo indicação em contrário.
O libheif (decodificação HEIC) é licenciado sob a LGPL-3.0. Ele é carregado como arquivo separado e não é combinado com nosso código; sua fonte e licença estão disponíveis no repositório indicado.
| Componente | Licença |
|---|---|
| Next.js | MIT |
| React | MIT |
| next-intl | MIT |
| Tailwind CSS | MIT |
| Lucide | ISC |
| Zod | MIT |
| Comlink | Apache-2.0 |
| pdf-lib | MIT |
| PDF.js | Apache-2.0 |
| OpenJPEG (JPEG 2000 decoder, via PDF.js)loaded as a separate file, only for PDFs that contain JPEG 2000 images | BSD-2-Clause |
| PDFium JBIG2 decoder (via PDF.js)loaded as a separate file, only for scanned PDFs with JBIG2 images | BSD-3-Clause |
| qcms (colour management, via PDF.js)loaded as a separate file, only for PDFs with ICC colour profiles | MIT |
| Liberation Sans 1.07.4 (PDF.js standard fonts)four TrueType files PDF.js reads as data for Helvetica/Arial when a PDF does not embed its fonts; served from this site as separate files (LICENSE_LIBERATION next to them), never part of our JavaScript or WebAssembly | GPL-2.0 with the font-embedding exception (Red Hat) |
| Foxit standard fonts (PDF.js standard fonts)the CFF (Type1C) font files for Courier, Times, Symbol and ZapfDingbats, read as data by PDF.js only when a PDF does not embed its fonts; served from this site as separate files (LICENSE_FOXIT next to them), never part of our JavaScript or WebAssembly | BSD-3-Clause (the PDFium licence) |
| Adobe Glyph List (via PDF.js tables)the glyph-name → Unicode table and the standard PDF encodings, taken from PDF.js's tables (Apache-2.0, Mozilla Foundation) into our PDF content-stream parser so a PDF's text can be read without its fonts | BSD-3-Clause |
| jSquash (MozJPEG, libwebp, libavif, OxiPNG, libjxl codecs from Squoosh) | Apache-2.0 |
| UTIF.js (TIFF decoder)loaded only when a TIFF is opened | MIT |
| fontkit (via @pdf-lib/fontkit)loaded only for watermark or page-number text beyond Latin-1 (a Unicode font) | MIT |
| DejaVu fontsthe editor's substitute font: text edits whose letters the original font lacks, new text and form-field appearances (embedded as a subset in the saved file, named in /DR), and watermark or page-number text beyond Latin-1; fetched from this site only | Bitstream Vera licence (free) |
| Dancing Script and Caveat (via Fontsource)script faces for a typed signature, fetched from this site only when you type one | SIL OFL 1.1 |
| Homemade Apple (via Fontsource)script face for a typed signature, fetched from this site only when you type one | Apache-2.0 |
| pica | MIT |
| fflate | MIT |
| zxing-wasm (ZXing C++)loaded as a separate file, only on the QR reader | MIT / Apache-2.0 |
| diff (jsdiff) | BSD-3-Clause |
| tesseract.js + Tesseract OCR (WebAssembly)loaded as separate files, only when you run OCR | Apache-2.0 |
| tessdata (Tesseract language models)15 models, one per language: English, Romanian, Spanish, Portuguese, French, German, Italian, Dutch, Polish, Hungarian, Turkish, Czech, Russian, Ukrainian, Greek; each is fetched from this site on first use | Apache-2.0 |
| wasm-feature-detect | Apache-2.0 |
| Mediabunnyvideo and audio tools; the codecs are the browser's own (WebCodecs) | MPL-2.0 |
| LAME MP3 encoder 3.100 (via @mediabunny/mp3-encoder)loaded as a separate file, only when MP3 output is chosen; source and licence at the link and in /engines/mp3-d53556306d/NOTICE next to the binary | LGPL (LAME) / MPL-2.0 (bridge) |
| gifenc | MIT |
| gifuct-jsreads animated GIFs where the browser has no ImageDecoder | MIT |
| web-vitalspage speed measurements (no file data) | Apache-2.0 |
| qpdf (via qpdf-wasm)loaded as a separate file when a PDF is protected, or when one needs its password removed | Apache-2.0 |
| qr-code-styling | MIT |
| qrcode-generator (Kazuhiko Arase)the QR encoder behind the styled codes and the first-paint preview | MIT |
| zxcvbn-ts | MIT |
| EFF long wordlist (via eff-diceware-passphrase)the 7 776 words behind passphrases, loaded only when that mode is chosen | CC BY 3.0 (wordlist) / ISC (package) |
| libheif-js (libheif)loaded as separate files (libheif.wasm and its loader), only when a HEIC/HEIF picture needs decoding outside Safari; source and licence at the link | LGPL-3.0 |
| libarchive 3.7.2 (via libarchive.js)loaded as separate files, only when an archive other than a plain ZIP is opened (7z, RAR, TAR, ISO…); bundles zlib (zlib licence), bzip2 (BSD-style), liblzma (public domain) and OpenSSL 1.0.2 (OpenSSL/SSLeay licence); all texts in /engines/libarchive-ee41cb203c/NOTICE and next to it | BSD-2-Clause (libarchive) / MIT (libarchive.js) |
| opentype.js (with tiny-inflate)font converter: reads layout tables and rewrites CFF fonts when subsetting | MIT |
| woff2 and Brotli (Google, via wawoff2)loaded as separate files, only when a font is converted to or from WOFF2; see /engines/woff2-441e3b9578/NOTICE | MIT |