Stirling PDF vs PDF24 Creator
Both are alternatives to Adobe Acrobat Pro. Here's how they stack up — verified facts, no spin.
Also searched as PDF24 Creator vs Stirling PDF — same comparison, one verdict.
Stirling PDF is open source (MIT (core; enterprise modules separate)) and PDF24 Creator is not (Proprietary freeware) — so the real question is whether you want to own the pdf & documents stack or rent it.
Stirling PDF
TOP PICKA complete PDF toolbox on your own server — 50+ tools, MIT core.
The fastest-growing PDF project on GitHub (87k+ stars): one Docker container serving merge, split, edit, convert, OCR, redact, and sign to any browser on your network. Your documents never leave hardware you control — which for contracts and financial papers is the entire argument. Core is MIT; some enterprise/SaaS modules carry separate terms.
PDF24 Creator
The widest genuinely-free toolset — desktop and browser, no signup.
Geek Software's PDF24 is free for personal AND business use: a Windows desktop app that works fully offline plus browser tools for everything else — merge, compress, convert, OCR, sign. The trade: closed-source, Windows-centric on desktop, and the web version is ad-supported rather than paywalled.
Side by side
6 points of comparison, every one read from a verified field. Green marks the side that wins a row outright. A dash means we do not hold that fact — never that it is zero.
| Stirling PDF | PDF24 Creator | |
|---|---|---|
| Sovereignty ScoreOur transparent 0–100 composite for data ownership and exit cost. | 90 | 55 |
| Open source | Yes | No |
| Self-hostable | Yes | No |
| Local-first data | Yes | Yes |
| License | MIT (core; enterprise modules separate) | Proprietary freeware |
| Pricing | Free (MIT core) — self-host via Docker; optional paid enterprise tiers | Free for personal and business use; ad-supported online tools |
Stirling PDF is Macrostack's recommended Adobe Acrobat Pro alternative, so it's our pick here.
Stirling PDF
Strengths
- +50+ PDF tools in one self-hosted app
- +Documents are processed on your hardware — nothing uploads
- +87k+ GitHub stars and a fast release pace
Trade-offs
- −Needs Docker or a small server
- −Browser-based editing is lighter than desktop Acrobat for heavy layout work
- −Enterprise modules sit outside the MIT core
PDF24 Creator
Strengths
- +Genuinely free, including business use
- +Desktop app works fully offline
- +Covers nearly every everyday PDF task
Trade-offs
- −Windows-only on desktop
- −Closed-source
- −Web tools are ad-supported
Which one fits you
The trade-offs above, turned into a decision. Find the line that describes your team.
Choose Stirling PDF
if you want the source and the option to fork it, and you would rather run it on your own hardware, and 50+ PDF tools in one self-hosted app.
Choose PDF24 Creator
if genuinely free, including business use.
Neither, yet
if both carry a real cost you should weigh first — needs Docker or a small server, and windows-only on desktop. If either of those is a dealbreaker for your team, the shortlist is wrong rather than the choice.
Stirling PDF vs PDF24 Creator — common questions
Is Stirling PDF a better fit than PDF24 Creator for pdf & documents?
It depends on what you are optimising for, and the honest split is this: Stirling PDF scores 90 to PDF24 Creator's 55 on data ownership and exit cost, so it is the safer choice if you care about being able to leave. PDF24 Creator earns its place on a different axis — genuinely free, including business use. Neither is a wrong answer for every team; the table above is the actual comparison.
What happens if we want to switch later?
Stirling PDF keeps its data local or in open formats, so leaving is an export rather than a negotiation. PDF24 Creator keeps your data on its own infrastructure, which is the part to plan for: confirm the export path before you commit, not when you are already trying to leave.
Can I self-host Stirling PDF?
Stirling PDF can be self-hosted; PDF24 Creator cannot, so it stays on the vendor's infrastructure whatever you do.
Are Stirling PDF and PDF24 Creator both alternatives to Adobe Acrobat Pro?
Yes — both appear in our Adobe Acrobat Pro comparison, which is why they are worth putting side by side. People usually arrive here already having decided to move off Adobe Acrobat Pro and now choosing between the two replacements, which is a narrower and much easier question.
More Adobe Acrobat Pro head-to-heads
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Facts verified 2026-07-19. Licenses and pricing change — spotted something out of date? That's a correction we want.