Open-source licences
Filezuma is built on the work of the open-source projects below. The processing in your browser leans on two in particular: pdf-lib, which rebuilds documents, and Mozilla's pdf.js, which reads and renders them.
Full licence textsCompiled into our in-browser engines
Libraries built into the WebAssembly engines that encrypt PDFs and recognise text in scans.
- GIFLIB5.1.4MIT
Compiled into the OCR engine.
- Leptonica1.83.0BSD-2-Clause
Compiled into the OCR engine.
- libjpeg9aIJG
Compiled into the OCR engine. This software is based in part on the work of the Independent JPEG Group.
- libjpeg-turbo2.1.1IJG AND BSD-3-Clause AND Zlib
Compiled into qpdf.wasm. This software is based in part on the work of the Independent JPEG Group.
- libpng1.6.38Libpng-2.0
Compiled into the OCR engine.
- LibTIFF4.3.0libtiff
Compiled into the OCR engine.
- libwebp1.2.2BSD-3-Clause
Compiled into the OCR engine.
- OpenLibm0.8.0MIT AND BSD-2-Clause AND ISC
Compiled into the OCR engine.
- Tesseract OCR5.3.0Apache-2.0
The text recognition engine, compiled to run in your browser.
- Tesseract trained models4.0.0 best (integer)Apache-2.0
Language models for English, Spanish, French, German, Portuguese and Italian.
- zlib1.2.xZlib
Compiled into qpdf.wasm (1.2.13) and the OCR engine (1.2.12).
Fonts
Served from our own domain rather than a font CDN.
- InterOFL-1.1
- Liberation Fonts2.1.5OFL-1.1
The typefaces in the PDF editor. Also embedded in the PDFs it produces, which the licence permits.
- OutfitOFL-1.1
Libraries
Everything the site and its tools are built from, including their own dependencies.
- @clerk/backend3.20.1MIT
- @clerk/nextjs7.9.7MIT
- @clerk/react6.17.2MIT
- @clerk/shared4.36.0MIT
- @dnd-kit/accessibility3.1.1MIT
- @dnd-kit/core6.3.1MIT
- @dnd-kit/sortable10.0.0MIT
- @dnd-kit/utilities3.2.2MIT
- @fontsource/allura5.3.0OFL-1.1
- @fontsource/dancing-script5.3.0OFL-1.1
- @fontsource/great-vibes5.3.0OFL-1.1
- @fontsource/homemade-apple5.3.0Apache-2.0
- @fontsource/mrs-saint-delafield5.3.0OFL-1.1
- @fontsource/sacramento5.3.0OFL-1.1
- @jspawn/qpdf-wasm0.0.2Apache-2.0
- @kenjiuno/decompressrtf0.1.4BSD-2-Clause
- @kenjiuno/msgreader1.28.0Apache-2.0
- @pdf-lib/fontkit1.1.1MIT
- @pdf-lib/standard-fonts1.0.0MIT
- @signpdf/placeholder-pdf-lib3.3.0MIT
- @signpdf/signer-p123.3.0MIT
- @signpdf/signpdf3.3.0MIT
- @signpdf/utils3.3.0MIT
- @stablelib/base641.0.1MIT
- @types/node20.19.43MIT
- @upstash/core-analyticsv0.0.10MIT
- @upstash/ratelimit2.2.0MIT
- @upstash/redis1.39.0MIT
- @vercel/analytics2.0.1MIT
- @vercel/blob2.8.0Apache-2.0
- @vercel/cli-config0.2.7Apache-2.0
- @vercel/cli-exec1.0.1Apache-2.0
- @vercel/oidc3.8.8Apache-2.0
- async-retry1.3.3MIT
- bmp-js0.1.0MIT
- clsx2.1.1MIT
- cross-spawn7.0.6MIT
- execa5.1.1MIT
- fast-sha2561.3.0Unlicense
- fflate0.8.2MIT
- get-stream6.0.1MIT
- human-signals2.1.0Apache-2.0
- iconv-lite0.6.3MIT
- idb-keyval6.3.0Apache-2.0
- is-buffer2.0.5MIT
- is-node-process1.2.0MIT
- is-stream2.0.1MIT
- is-url1.2.4MIT
- isexe2.0.0ISC
- jose5.10.0MIT
- lucide-react1.47.0ISC
- marked18.0.14MIT
- merge-stream2.0.0MIT
- mimic-fn2.1.0MIT
- next16.3.8MIT
- node-fetch2.7.0MIT
- node-forge1.4.0(BSD-3-Clause OR GPL-2.0)
- npm-run-path4.0.1MIT
- onetime5.1.2MIT
- opencollective-postinstall2.0.3MIT
- os-paths4.4.0MIT
- pako1.0.11(MIT AND Zlib)
- path-key3.1.1MIT
- pdf-lib1.17.1MIT
- pdfjs-dist6.3.289Apache-2.0
- postal-mime3.0.1MIT-0
- react19.2.8MIT
- react-dom19.2.8MIT
- regenerator-runtime0.13.11MIT
- retry0.13.1MIT
- safer-buffer2.1.2MIT
- server-only0.0.1MIT
- shebang-command2.0.0MIT
- shebang-regex3.0.0MIT
- signal-exit3.0.7ISC
- standardwebhooks1.1.1MIT
- strip-final-newline2.0.0MIT
- stripe22.6.0MIT
- tailwind-merge3.7.0MIT
- tesseract.js7.0.0Apache-2.0
- tesseract.js-core7.0.0Apache-2.0
- throttleit2.1.0MIT
- tr460.0.3MIT
- tslib2.8.10BSD
- undici6.28.1MIT
- undici-types6.21.0MIT
- utif24.1.0MIT
- wasm-feature-detect1.9.0Apache-2.0
- webidl-conversions3.0.1BSD-2-Clause
- whatwg-url5.0.0MIT
- which2.0.2ISC
- xdg-app-paths5.5.1MIT
- xdg-portable7.3.0MIT
- zlibjs0.3.1MIT
- zod4.1.11MIT
On our conversion server
These run on our servers for the tools that cannot work in a browser. They are never sent to your device.
- LibreOfficeMPL-2.0
Converts Word, Excel and PowerPoint files. Runs as a separate program on our conversion server.
- ChromiumBSD-3-Clause
Renders web pages for HTML to PDF.
- PlaywrightApache-2.0
Drives Chromium on the conversion server.