第三方声明
我们用于构建 pdfsignpad 的开源软件和字体，以及各自要求的署名。
本页面仅提供英文版本。英文文本为具有约束力的版本；pdfsignpad 界面的其余部分提供全部 7 种支持语言。
This page lists the open-source software and fonts used to build PDF Sign Pad, the license each is under, and the credit each requires. It exists to meet our attribution obligations under those licenses and to be transparent about what the product is built from. It is not a description of your rights to use *our* software — see our §4 for that — and it doesn't itself grant you any rights to the components below beyond what their own licenses already give you.
Signing a document with PDF Sign Pad doesn't add any of these notices to your downloaded file — they apply to the product itself, not to the PDFs you create with it.
Open-source software
| Component | License | Copyright | License text |
|---|---|---|---|
| pdf-lib | MIT | Copyright (c) 2019 Andrew Dillon | MIT License |
| pdfjs-dist | Apache-2.0 | Mozilla and the PDF.js contributors (github.com/mozilla/pdf.js) — the installed package's LICENSE ships the standard Apache-2.0 text with no project-specific copyright line filled in, and includes no separate NOTICE file | Apache License 2.0 |
| @pdf-lib/fontkit | MIT | Copyright (c) Andrew Dillon — this package ships no LICENSE file of its own; attribution derived from its package.json author field | MIT License |
| React | MIT | Copyright (c) Facebook, Inc. and its affiliates. | MIT License |
| React DOM | MIT | Copyright (c) Facebook, Inc. and its affiliates. | MIT License |
Fonts (self-hosted, SIL Open Font License 1.1)
| Font family | Used for | Copyright | License |
|---|---|---|---|
| Hanken Grotesk | Interface text | Copyright 2021 The Hanken Grotesk Project Authors (https://github.com/marcologous/hanken-grotesk) | SIL Open Font License, Version 1.1 |
| Dancing Script | Typed-signature style | Copyright 2016 The Dancing Script Project Authors (https://github.com/googlefonts/DancingScript), with Reserved Font Name "Dancing Script" | SIL Open Font License, Version 1.1 |
| Great Vibes | Typed-signature style | Copyright 2015 The Great Vibes Pro Project Authors (https://github.com/googlefonts/great-vibes) | SIL Open Font License, Version 1.1 |
| Sacramento | Typed-signature style | Copyright (c) 2012, Brian J. Bonislawsky DBA Astigmatic (AOETI) (astigma@astigmatic.com), with Reserved Font Name "Sacramento" | SIL Open Font License, Version 1.1 |
| Pacifico | Typed-signature style | Copyright 2018 The Pacifico Project Authors (https://github.com/googlefonts/Pacifico) | SIL Open Font License, Version 1.1 |
| Noto Naskh Arabic / Noto Sans Arabic | Arabic interface + signature/text rendering | Copyright 2022 The Noto Project Authors (https://github.com/notofonts/arabic) | SIL Open Font License, Version 1.1 |
Full license text: SIL Open Font License 1.1.
*This inventory covers every third-party component actually bundled into the PDF Sign Pad client. It does not include our hosting provider (Cloudflare) or our self-hosted analytics (Plausible, run on our own infrastructure at plausible.zixdev.com) — neither is a redistributed dependency of this product's own codebase.*