# Stirling-PDF

- **Canonical URI:** https://www.vioscale.ai/software/stirling-pdf
- **Category:** PDF Editors
- **Homepage:** https://stirlingpdf.com/
- **Also known as:** stirling-pdf
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-26T19:32:38.738Z

## Vioscale score

**57 / 100**, confidence 16% (low). Computed 2026-09-01.

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 0 | 0.07844444444444446 | 0 | - |
| repo_stars | 93.5 | 0.026 | 2.4 | ✓ |
| integrations | 0 | 0.07033333333333334 | 0 | - |
| dependent_projects | 0 | 0.063 | 0 | ✓ |
| dev_activity | 63.1 | 0.094 | 5.9 | ✓ |
| release_cadence | 96.7 | 0.052 | 5 | ✓ |
| security_posture | 0 | 0.073 | 0 | - |
| package_downloads | 0 | 0.136 | 0 | - |
| security_score | 0 | 0.042 | 0 | - |
| community_qa_activity | 0 | 0.063 | 0 | - |

## Pricing

_As of 2026-08-20, [verify at source](https://stirlingpdf.com/pricing). Independently observed._

Open source · Free tier

## About

A versatile PDF platform offering editing, signing, redaction, and conversion capabilities. Can run as a standalone desktop application, in a web browser, or deployed on private servers, with REST APIs for integration and workflow automation.

_Independently observed._

## Platform & deployment

- **Platforms:** CLI, macOS, Web, Linux, Windows
- **Deployment:** Hybrid, On-premise, Self-hosted

## Release history

| Version | Date | Type |
|---|---|---|
| [v2.14.3](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.3) | 2026-08-06 | stable |
| [v2.14.2](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.2) | 2026-07-08 | stable |
| [v2.14.1](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.1) | 2026-07-07 | stable |
| [v2.14.0](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.14.0) | 2026-06-30 | stable |
| [v2.13.2](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.13.2) | 2026-06-24 | stable |
| [v2.13.1](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.13.1) | 2026-06-19 | stable |
| [v2.13.0](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.13.0) | 2026-06-18 | stable |
| [v2.12.0](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.12.0) | 2026-06-09 | stable |
| [v2.11.0](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.11.0) | 2026-05-19 | stable |
| [v2.10.1](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.10.1) | 2026-05-07 | stable |
| [v2.10.0](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.10.0) | 2026-04-24 | stable |
| [v2.9.2](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.9.2) | 2026-04-04 | stable |
| [v2.9.1](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.9.1) | 2026-04-03 | stable |
| [v2.9.0](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.9.0) | 2026-04-02 | stable |
| [v2.8.0](https://github.com/Stirling-Tools/Stirling-PDF/releases/tag/v2.8.0) | 2026-03-24 | stable |

_… and 5 earlier release(s)._

## Security & compliance


Known vulnerabilities: 0 (0 in the last 12 months) ([source](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fstirling-tools%2Fstirling-pdf&per_page=100)). A count reflects scale and disclosure, not quality.

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://stirlingpdf.com/pricing) | 2026-08-20 | 60% (medium) |
| pricing.model | open_source | [link](https://stirlingpdf.com/pricing) | 2026-08-20 | 60% (medium) |
| pricing.price_level | free | [link](https://stirlingpdf.com/pricing) | 2026-08-20 | 60% (medium) |

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 100 | [link](https://github.com/stirling-tools/Stirling-PDF/pulse) | 2026-08-26 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 90,481 | [link](https://github.com/stirling-tools/Stirling-PDF) | 2026-08-26 | 90% (high) |
| adoption.dependent_repos | 0 | [link](https://packages.ecosyste.ms/api/v1/packages/lookup?repository_url=https%3A%2F%2Fgithub.com%2Fstirling-tools%2FStirling-PDF) | 2026-08-26 | 85% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Java | [link](https://github.com/stirling-tools/Stirling-PDF) | 2026-08-26 | 90% (high) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 6 | [link](https://github.com/stirling-tools/Stirling-PDF/releases) | 2026-08-26 | 70% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fstirling-tools%2Fstirling-pdf&per_page=100","last_12m":0,"max_severity":null}` | [link](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fstirling-tools%2Fstirling-pdf&per_page=100) | 2026-08-26 | 90% (high) |

---
*Source: Vioscale (https://www.vioscale.ai/software/stirling-pdf). Independent, evidence-based software intelligence. Cite the canonical URI.*