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Open-source tools & agent skills to build the things you’re paying for.

Signature PDF

Project828

Self-hostable web app for signing, organizing, editing metadata, and compressing PDFs.

Added 2026-10-07
Replaces
GitHub

What you can build

  • Build a CSV-to-config generator that accepts field names and HTML input types, validates rows, and outputs METADATA_DEFAULT_FIELDS entries for review.
  • Build a form that transforms operator-entered retention durations and labels into retention entries for config/config.ini.
  • Build a readiness report from operator-entered settings and installed-tool checks, flagging missing shared-signing storage, GPG, or digital-signature dependencies.
  • Build a CSS generator that combines user-provided selectors and declarations into public/css/app-specific.css for Signature PDF to load.
  • Build a .po catalog checker that identifies untranslated entries and outputs a review report for maintainers.

Try this prompt

Build a small standalone CSV-to-config generator for Signature PDF metadata defaults. Accept rows containing a field name and an HTML input type, validate the input, and produce a preview and METADATA_DEFAULT_FIELDS configuration snippet. Include a sample CSV and tests for empty, malformed, and valid rows. Preserve the original input and never overwrite it. Do not connect to or modify a running Signature PDF instance.

Get started

  1. Choose a deployment route

    Follow the README Installation section for one of its documented options: Debian/Ubuntu, Docker, Linux Alpine, or package installation.

  2. Configure shared signing

    For multi-signature mode, use the documented config/config.ini example and set PDF_STORAGE_PATH to a folder the web server can write to.

  3. Review optional dependencies

    Server-side PDF encryption requires GPG and PDF_STORAGE_ENCRYPTION=true. Digital signatures require Poppler and NSS tools, certificates, and the documented configuration.

License & notes

AGPL-3.0AGPL-3.0 permits commercial use subject to its terms. Hosting, storage, system packages, and administration may add costs; no paid model or API cost is documented. If you modify the application and users interact with that version over a network, including internal users, AGPL-3.0 requires offering those users the modified source. Conveying copies has separate source and license obligations. Dependencies have their own licenses.

  • Multi-signature mode requires PDFs to be stored on the server; encrypted storage is optional and requires GPG.
  • Digital signatures require the documented Poppler and NSS tools, certificates, and configuration.
  • AGPL-3.0 requires offering modified source to users interacting remotely with a modified version, including internal users; conveying copies has separate obligations.
  • Hosting and administration can add costs. Dependencies have their own licenses; no paid model or API cost is documented.

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Added 2026-10-07
Works with
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