Vistalyth Tools vs Stirling-PDF
Stirling-PDF and Vistalyth Tools 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 Vistalyth Tools spans all five file types.
Vistalyth Tools vs Stirling-PDF
| Vistalyth Tools | 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. Vistalyth Tools 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, Vistalyth Tools handles all of it in one deployment instead of running several tools side by side.
Frequently asked questions
- Is Vistalyth Tools a replacement for Stirling-PDF?
- It can be, if you want one stack for more than PDFs. Vistalyth Tools'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. Vistalyth Tools 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 Vistalyth Tools as shared infrastructure.