| pdf-lib 1.17.1 | MIT | Create and edit PDF files |
| fontkit (pdf-lib) 1.1.1 | MIT | Embedding fonts |
| @pdf-lib/standard-fonts 1.0.0 | MIT | Standard PDF font data |
| @pdf-lib/upng 1.0.1 | MIT | PNG image decoding |
| pako 1.0.11 | MIT AND Zlib | Compressing data inside PDF files |
| tslib 1.14.1 | 0BSD | Small helper code used by pdf-lib |
| fflate 0.8.3 | MIT | ZIP downloads |
| HarfBuzz (harfbuzzjs) 1.6.3 | MIT | Shaping text in Thai, Hindi, Arabic and other scripts |
| Noto Sans, Noto Sans Thai, Devanagari, Bengali, JP, TC; Noto Naskh Arabic; Noto Nastaliq Urdu | OFL-1.1 | Fonts written into your PDFs (watermarks, page numbers, typed signatures) |
| Noto Serif, Lora, Merriweather, Playfair Display, Montserrat, Nunito, Oswald, Dancing Script, Caveat, JetBrains Mono, Sarabun, Prompt, Kanit, Mitr, Chakra Petch, Taviraj, Noto Serif Thai, Charm, Itim, Hind, Mukta, Poppins, Martel, Tiro Devanagari Hindi, Noto Serif Devanagari, Yatra One, Kalam, Hind Siliguri, Anek Bangla, Baloo Da 2, Tiro Bangla, Noto Serif Bengali, Galada, Atma, Noto Sans Arabic, Cairo, Tajawal, Amiri, Scheherazade New, Lateef, Noto Kufi Arabic, Reem Kufi, El Messiri, Aref Ruqaa, Gulzar, Noto Serif JP, Zen Kaku Gothic New, M PLUS Rounded 1c, Zen Maru Gothic, Shippori Mincho, Klee One, Dela Gothic One, Noto Serif TC, LXGW WenKai TC, Chiron GoRound TC, Chiron Sung HK, Cactus Classical Serif, Iansui | OFL-1.1 | Fonts written into your PDFs (watermarks, page numbers, typed signatures) |
| PDF.js 6.4.299 | Apache-2.0 | Page previews and rendering |
| OpenJPEG (via PDF.js) | BSD-2-Clause | JPEG 2000 image decoding |
| PDFium JBIG2 decoder (via PDF.js) | BSD-3-Clause | JBIG2 image decoding |
| qcms (via PDF.js) | MIT | Colour management |
| Foxit fonts (via PDF.js) | BSD-3-Clause | Fonts for drawing PDF pages |
| Liberation fonts (via PDF.js) | OFL-1.1 | Fonts for drawing PDF pages |
| Adobe CMaps (via PDF.js) | BSD-3-Clause | Character maps for Chinese, Japanese and Korean text |
| ICC colour profile (via PDF.js) | CC0-1.0 | Colour profile |
| QPDF | Apache-2.0 | Encryption, decryption, repair and optimisation |
| qpdf-wasm 0.3.0 | ISC | QPDF compiled to WebAssembly |
| zlib (in qpdf.wasm) | Zlib | Compressing data inside PDF files |
| libjpeg-turbo (in qpdf.wasm) | IJG AND BSD-3-Clause AND Zlib | JPEG encoding and decoding in QPDF |