Stirling PDF's privacy, without running a server
Stirling PDF is the self-hosting community's favourite for a reason: open source, feature-rich, and your files stay on infrastructure you control. But that last clause is also the price — a Docker host to run, update, and secure, for something many people need four times a month. PDFAirlock keeps the principle and deletes the ops: the browser is the server. Load the page once and it even works offline, on machines where you could never install or host anything.
Why people look for a Stirling PDF alternative
- You only wanted private PDF tools, not another container to maintain
- You need it on machines that can't reach your homelab — or aren't yours
- Colleagues or family ask for “the safe PDF thing” and a URL is deployable advice; a compose file isn't
- You want redaction with a built-in verification report
What Stirling PDF does better
Honest credit: Stirling has a larger toolset than we do, it's fully open source, and self-hosting gives you control we structurally can't match — your instance, your rules, your network, even an API to automate against. For a homelab owner who enjoys the craft, it's excellent, and its community moves fast.
Switching: your Stirling PDF task, done here
Every tool below runs in your browser — no upload, no account, and it works offline after your first visit.
| On Stirling PDF | On PDFAirlock |
|---|---|
| Merge | Merge PDF files |
| Split | Split PDF |
| Compress | Compress PDF |
| Rotate | Rotate PDF |
| Remove pages | Delete pages |
| Add watermark | Watermark PDF |
| Add page numbers | Add page numbers |
| Add password | Protect PDF (AES-256) |
| Remove password | Unlock PDF |
| Redact (manual) | Redact PDF (with verification) |
When to stay with Stirling PDF
- You already run a homelab and want everything on your own metal
- You need its long tail of tools (OCR, conversions, pipelines/API)
- Open-source auditability of the exact running code matters to you
Verify it in 30 seconds
Don't trust this page — test it. Open any tool with your browser's Network tab visible and process a file: zero requests. Or load the page, turn on airplane mode, and keep working. How the enforcement works →
Frequently asked questions
Do I need Docker or a server to use PDFAirlock?
No — nothing to install or host. The whole toolkit runs in your browser tab, and after the first visit it works offline. The privacy result is similar to self-hosting: your files never touch anyone else's server.
Is browser processing as private as self-hosting Stirling PDF?
For the document, effectively yes: in both cases the file never reaches a third-party server. Self-hosting gives you more control (your code, your network); PDFAirlock gives you enforcement you can check per-visit — a Content-Security-Policy that blocks all external requests, verifiable in your network tab or by going offline.
Can family or colleagues use it without setup?
Yes — that's the point. It's a URL. No account, no install, no VPN back to your homelab.
More comparisons: the full side-by-side · vs iLovePDF · vs Smallpdf · vs Adobe Acrobat · vs PDF24 · vs Sejda
Based on publicly documented behavior as of September 2026. All trademarks belong to their owners. Corrections: support@pdfairlock.com.