Open Source Licenses
KolayDönüştür was not built from scratch — it stands on the work of the open source community. Below is the complete list of the 1418 open source packages we use — name, version, license and copyright holder. Our thanks to every one of their authors.
📊 Most Common License Types
| Package | Version | License | Owner / Publisher | Source |
|---|---|---|---|---|
| @smithy/signature-v4 | 5.3.14 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/smithy-client | 4.12.13 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/types | 4.14.1 | Apache-2.0 | AWS Smithy Team | GitHub |
| @smithy/url-parser | 4.2.14 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-base64 | 4.3.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-body-length-browser | 4.2.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-body-length-node | 4.2.3 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-buffer-from | 2.2.0 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-buffer-from | 4.2.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-config-provider | 4.2.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-defaults-mode-browser | 4.3.49 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-defaults-mode-node | 4.2.54 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-endpoints | 3.4.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-hex-encoding | 4.2.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-middleware | 4.2.14 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-retry | 4.3.8 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-stream | 4.5.25 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-uri-escape | 4.2.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-utf8 | 2.3.0 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-utf8 | 4.2.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/util-waiter | 4.3.0 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @smithy/uuid | 1.1.2 | Apache-2.0 | AWS SDK for JavaScript Team | GitHub |
| @socket.io/component-emitter | 3.1.2 | MIT | — | GitHub |
| @standard-schema/spec | 1.1.0 | MIT | Colin McDonnell | GitHub |
| @standard-schema/utils | 0.3.0 | MIT | Fabian Hiller | GitHub |
| @surma/rollup-plugin-off-main-thread | 2.2.3 | Apache-2.0 | Surma | GitHub |
| @swc/core-win32-x64-msvc | 1.15.33 | Apache-2.0 AND MIT | 강동윤 | GitHub |
| @swc/core | 1.15.33 | Apache-2.0 | 강동윤 | GitHub |
| @swc/counter | 0.1.3 | Apache-2.0 | 강동윤 | GitHub |
| @swc/helpers | 0.5.15 | Apache-2.0 | 강동윤 | GitHub |
| @swc/types | 0.1.26 | Apache-2.0 | 강동윤 | GitHub |
| @tiptap/core | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-blockquote | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-bold | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-bubble-menu | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-bullet-list | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-code-block | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-code | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-document | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-dropcursor | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-floating-menu | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-gapcursor | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-hard-break | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-heading | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-horizontal-rule | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-italic | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-link | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-list-item | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-list-keymap | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-list | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-ordered-list | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-paragraph | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-placeholder | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-strike | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-text | 3.23.1 | MIT | — | GitHub |
| @tiptap/extension-underline | 3.23.1 | MIT | — | GitHub |
| @tiptap/extensions | 3.23.1 | MIT | — | GitHub |
| @tiptap/pm | 3.23.1 | MIT | — | GitHub |
| @tiptap/react | 3.23.1 | MIT | — | GitHub |
| @tiptap/starter-kit | 3.23.1 | MIT | — | GitHub |
| @tokenizer/inflate | 0.4.1 | MIT | Borewit | GitHub |
| @tokenizer/token | 0.3.0 | MIT | Borewit | GitHub |
| @tsconfig/node10 | 1.0.12 | MIT | — | GitHub |
| @tsconfig/node12 | 1.0.11 | MIT | — | GitHub |
| @tsconfig/node14 | 1.0.3 | MIT | — | GitHub |
| @tsconfig/node16 | 1.0.4 | MIT | — | GitHub |
| @tybys/wasm-util | 0.10.2 | MIT | toyobayashi | GitHub |
| @types/bcryptjs | 2.4.6 | MIT | — | GitHub |
| @types/bull | 3.15.9 | MIT | — | GitHub |
| @types/chai | 5.2.3 | MIT | — | GitHub |
| @types/connect | 3.4.38 | MIT | — | GitHub |
| @types/cors | 2.8.19 | MIT | — | GitHub |
| @types/deep-eql | 4.0.2 | MIT | — | GitHub |
| @types/dompurify | 3.0.5 | MIT | — | GitHub |
| @types/estree | 0.0.39 | MIT | — | GitHub |
| @types/estree | 1.0.8 | MIT | — | GitHub |
| @types/estree | 1.0.9 | MIT | — | GitHub |
| @types/glob | 7.2.0 | MIT | — | GitHub |
| @types/ioredis | 4.28.10 | MIT | — | GitHub |
| @types/json-schema | 7.0.15 | MIT | — | GitHub |
| @types/json5 | 0.0.29 | MIT | Jason Swearingen | GitHub |
| @types/minimatch | 5.1.2 | MIT | — | GitHub |
| @types/mysql | 2.15.27 | MIT | — | GitHub |
| @types/node-cron | 3.0.11 | MIT | — | GitHub |
| @types/node | 20.19.40 | MIT | — | GitHub |
| @types/nodemailer | 7.0.11 | MIT | — | GitHub |
| @types/pg-pool | 2.0.7 | MIT | — | GitHub |
| @types/pg | 8.15.6 | MIT | — | GitHub |
| @types/raf | 3.4.3 | MIT | — | GitHub |
| @types/react-dom | 19.2.3 | MIT | — | GitHub |
| @types/react | 19.2.14 | MIT | — | GitHub |
| @types/redis | 2.8.32 | MIT | — | GitHub |
| @types/resolve | 1.17.1 | MIT | — | GitHub |
| @types/speakeasy | 2.0.10 | MIT | — | GitHub |
| @types/tedious | 4.0.14 | MIT | — | GitHub |
| @types/trusted-types | 2.0.7 | MIT | — | GitHub |
| @types/turndown | 5.0.6 | MIT | — | GitHub |
| @types/use-sync-external-store | 0.0.6 | MIT | — | GitHub |
| @types/ws | 8.18.1 | MIT | — | GitHub |
| @typescript-eslint/eslint-plugin | 8.59.2 | MIT | — | GitHub |
📎 Special Attributions
- Browser compatibility data: caniuse.com (CC BY 4.0) — thanks to Alexis Deveria and contributors.
- Noto Sans Font Family: Google Noto Fonts (SIL OFL 1.1) — Google and contributors.
- OCRmyPDF: OCRmyPDF (MPL-2.0) — Tesseract-based OCR engine.
- PDF processing stack (AGPL-free, 24 May 2026): pdf-lib (MIT), pdfjs-dist (Apache 2.0), sharp (Apache 2.0), @hyzyla/pdfium (MIT) — Google PDFium WebAssembly sarmalayıcısı (Apache 2.0), @napi-rs/canvas (MIT), tesseract.js (Apache 2.0), qpdf (Apache 2.0). Önceki AGPL bağımlılığı (Ghostscript) bu tarihte tamamen kaldırılmıştır.
- CBRT EVDS data: Central Bank of the Republic of Türkiye (public domain).
- Open-Meteo hava verisi: open-meteo.com (CC BY 4.0).
🧩 Engines delivered to your browser
Some tools process your file inside your browser using the open-source engines below, without uploading it. These engines are served unmodified, under their own licenses.
- FFmpeg (ffmpeg.wasm core, v0.12) — video/audio tools. GPL-2.0-or-later build (x264 and x265 GPL-2.0+, LAME and FriBidi LGPL, other components under their own licenses). Build configuration:
--enable-gpl --enable-libx264 --enable-libx265 --enable-libvpx --enable-libmp3lame. Source code: github.com/ffmpegwasm/ffmpeg.wasm and ffmpeg.org/download.html. To request a copy of the corresponding source code under the GPL: [email protected]. - Whisper (OpenAI, MIT) — speech-to-text; Xenova/whisper-base ONNX model (MIT) and Transformers.js (Apache-2.0).
- ISNet general-use / DIS (Apache-2.0) — background removal (ONNX model).
- ONNX Runtime Web (MIT) — runtime that executes the AI models in the browser.
- Tesseract OCR — tesseract.js and tesseract.js-core (Apache-2.0), language data tessdata_best (Apache-2.0).
🖥️ Tools running as separate programs on our servers
The open-source programs below run on our servers as separate processes, unmodified and not distributed.
- Poppler (pdftotext, pdftoppm — GPL-2.0/3.0) — PDF text and image extraction.
- Ghostscript (AGPL-3.0) — inside OCRmyPDF, only for producing OCR output.
- unpaper (GPL-2.0+) — scanned page cleanup.
- LibreOffice (MPL-2.0) — office document conversion.
- qpdf (Apache-2.0), Tesseract (Apache-2.0).
🛡️ Our License Policy
KolayDönüştür is a commercial, closed-source web service. Our own code’s npm dependencies do not include AGPL, SSPL or CC-BY-NC packages. Every PR automatically runs npm run license:check as a risk scan; if AGPL/SSPL/CC-BY-NC is detected the build fails. Our npm dependencies are under MIT, Apache 2.0, BSD, ISC or similarly commercial-friendly licenses. The separate programs and browser engines listed in the cards above (including FFmpeg) are subject to their own licenses; we use them unmodified, as programs separate from our code.