SnapOtter vs Stirling-PDF
Stirling-PDF and SnapOtter are both self-hosted and open source, so files stay on your server either way. The difference is scope: Stirling-PDF focuses on PDFs, while SnapOtter spans all five file types.
SnapOtter vs Stirling-PDF
| SnapOtter | Stirling-PDF | |
|---|---|---|
| Self-hosted | Yes | Yes |
| Open source | Yes, AGPLv3 | Yes |
| Primary focus | Full file workflow across five types | PDF workflows |
| Tool count | 200+ | 60+ PDF operations |
| Local AI (OCR, transcription, upscaling) | OCR, transcription, upscaling, and more | PDF-oriented OCR workflows |
| Layer-based image editor | Yes | Not its focus |
| Pipelines and batch processing | Yes | PDF automation workflows |
Last reviewed July 1, 2026. Comparison uses publicly available vendor pages and focuses on deployment model, file location, auditability, and workflow fit. Vendor features and plans change; check current docs before deciding. SnapOtter is not affiliated with Stirling-PDF.
Sources reviewed
One stack, all five file types
If you only ever touch PDFs, Stirling-PDF is excellent and worth a look. If you also resize images, convert video, transcribe audio, or batch files, SnapOtter handles all of it in one deployment instead of running several tools side by side.
Frequently asked questions
- Is SnapOtter a replacement for Stirling-PDF?
- It can be, if you want one stack for more than PDFs. SnapOtter's PDF coverage is broad, and it adds image, video, audio, and file tools. For a PDF-only setup, Stirling-PDF is a solid, focused choice.
- Are both free and open source?
- Both projects are open source and self-hostable. SnapOtter is AGPLv3 and adds an optional paid enterprise tier for SSO, audit logging, and similar controls.
More comparisons
Run it on your own server
200+ tools across image, video, audio, PDF, and files. Open source, free forever, and your files never leave your network.
Deploying this across a team?
Audit trails, per-tool permissions, SSO, and air-gapped deployment for regulated environments. Talk to us about running SnapOtter as shared infrastructure.