# Signature PDF

> Signature PDF (v1.9.2, Dec 2025; commits to Sep 2026) is an AGPL-3.0 PHP web app, installable on Debian/Ubuntu, Alpine or Docker, with many public instances. Multi-signer mode is optional and stores PDFs on the server, optionally GPG-encrypted. A server-side digital signature can be enabled with poppler and NSS certificates. It is a simple signing tool, not a workflow platform: the README documents no signing order, reminders, templates or API.

- Repository: https://github.com/24eme/signaturepdf
- Official docs: https://github.com/24eme/signaturepdf#readme
- Checked: 2026-10-15

## What it replaces
- DocuSign: Send documents for signature, Certificate-based digital signatures (PKI) (partial). Simple shared signing of a PDF; no signing order, reminders, templates or API documented.

## Facts, with sources

| Question | Status | Answer | Source | Checked |
|---|---|---|---|---|
| Runs on my machine? | Confirmed | Yes, self-hosted PHP app (or local PHP built-in server); public instances also exist | https://github.com/24eme/signaturepdf/blob/master/installation.md | 2026-10-15 |
| Code licence | Partial | AGPL-3.0 (strong copyleft) | https://github.com/24eme/signaturepdf#license | 2026-10-15 |
| Model weights licence | Confirmed | No separate model weights | https://github.com/24eme/signaturepdf#readme | 2026-10-15 |
| Commercial use | Partial | Yes, under AGPL-3.0 copyleft terms | https://github.com/24eme/signaturepdf#license | 2026-10-15 |
| Paid services needed? | Confirmed | None required | https://github.com/24eme/signaturepdf#readme | 2026-10-15 |
| Hardware | Unknown | Not documented | none found | - |
| Operating systems | Partial | Server on Debian/Ubuntu, Alpine Linux or Docker; users sign in a web browser | https://github.com/24eme/signaturepdf#installation | 2026-10-15 |
| Setup effort | Confirmed | Medium; apt packages plus PHP web server, or one Docker command | https://github.com/24eme/signaturepdf/blob/master/installation.md | 2026-10-15 |

GitHub: 832 stars, 110 forks, last push 2026-09-08, archived: no.
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Source: RepoQuarry (https://repoquarry.dev/projects/signaturepdf). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.