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libresign/pdf-signature-validator
=================================

High-quality PDF signature extraction and validation primitives for LibreSign and external consumers.

v0.2.2(1mo ago)1260[5 PRs](https://github.com/LibreSign/pdf-signature-validator/pulls)AGPL-3.0-or-laterPHPPHP ^8.2CI passing

Since Apr 24Pushed 2w agoCompare

[ Source](https://github.com/LibreSign/pdf-signature-validator)[ Packagist](https://packagist.org/packages/libresign/pdf-signature-validator)[ GitHub Sponsors](https://github.com/sponsors/libresign)[ RSS](/packages/libresign-pdf-signature-validator/feed)WikiDiscussions main Synced 1w ago

READMEChangelog (3)Dependencies (6)Versions (20)Used By (0)

PDF Signature Validator
=======================

[](#pdf-signature-validator)

Minimal PHP library to extract and validate PDF signatures.

Install
-------

[](#install)

```
composer require libresign/pdf-signature-validator
```

Usage
-----

[](#usage)

```
use LibreSign\PdfSignatureValidator\Parser\PdfSignatureValidator;

$validator = new PdfSignatureValidator();

$results = $validator->validateFromString($pdfBinaryContent);
// or: $results = $validator->validateFromResource($resource);
```

Each item in `$results` includes:

- `signatureValidation` (ValidationResult)
- `certificateValidation` (ValidationResult)

Development
-----------

[](#development)

Use the CI workflows as the source of truth. For local execution, use the scripts declared in `composer.json`.

###  Health Score

43

—

FairBetter than 89% of packages

Maintenance95

Actively maintained with recent releases

Popularity16

Limited adoption so far

Community8

Small or concentrated contributor base

Maturity45

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 70.8% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~18 days

Total

4

Last Release

36d ago

### Community

Maintainers

![](https://avatars.githubusercontent.com/u/79158919?v=4)[LibreSign](/maintainers/libresign)[@LibreSign](https://github.com/LibreSign)

---

Top Contributors

[![vitormattos](https://avatars.githubusercontent.com/u/1079143?v=4)](https://github.com/vitormattos "vitormattos (17 commits)")[![dependabot[bot]](https://avatars.githubusercontent.com/in/29110?v=4)](https://github.com/dependabot[bot] "dependabot[bot] (7 commits)")

### Embed Badge

![Health badge](/badges/libresign-pdf-signature-validator/health.svg)

```
[![Health](https://phpackages.com/badges/libresign-pdf-signature-validator/health.svg)](https://phpackages.com/packages/libresign-pdf-signature-validator)
```

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