PDF24
Worth it
Confidence: Medium
Use it if you need merge, split, compress, edit, or convert: it is genuinely 100% free, well rated, and works online or offline on Windows.
New check
Comparison
PDF24 vs Stirling PDF
PDF24 and Stirling PDF both land on Worth it.
Stirling PDF
Worth it
Confidence: Medium
Buy if you want a free, private, self-hostable PDF toolbox . the open-source core covers editing, redaction, OCR, signing, and bulk automation.
| Compare | ||
|---|---|---|
| Verdict | Worth it | Worth it |
| Best for | Occasional merge/split/compress tasks | Privacy-conscious individuals |
| Who it's not for | Enterprises needing compliance sign-off or support SLAs | One-off users who just merge two PDFs . free web tools are simpler |
| Privacy | Widely trusted site (Gridinsoft 100/100, 20.7-year domain); one 2023 local privilege-escalation disclosure for the Windows installer.⁹ | No known public vulnerabilities found in the sources reviewed.12 |
| Support quality | No support-quality evidence found | Support only mentioned as paid-plan feature; no data |
| Public sentiment | Users praise the breadth of free tools and the offline option, with occasional complaints about tools breaking and a softer Microsoft Store rating.⁴ | Site-published testimonials praise privacy, automation, and API access; independent review depth is limited to SourceForge and community mentions.12 |
| Biggest gotcha | Windows installer had a local privilege escalation flaw disclosed October 2023; keep it updated.⁹ | No published Team/Enterprise prices in any reviewed source; budget after a sales call.13 |
Pick PDF24 when
- Occasional merge/split/compress tasks
- Budget-conscious small businesses
- Windows users wanting offline editing
- Anyone ditching Adobe fees
When PDF24 is not a fit
- Enterprises needing compliance sign-off or support SLAs
- Mac or Linux users wanting a desktop app
- Regulated teams handling sensitive contracts with zero vendor accountability
- Teams needing collaborative PDF workflows with audit trails
Pick Stirling PDF when
- Privacy-conscious individuals
- Developers automating bulk PDF workflows
- Regulated teams needing air-gapped processing
- Teams replacing costly Adobe subscriptions
When Stirling PDF is not a fit
- One-off users who just merge two PDFs . free web tools are simpler
- Teams wanting published pricing and vendor SLAs upfront
- Non-technical offices with nobody to run infrastructure
- Buyers needing legally certified e-signature compliance guarantees
Sources
official
- PDF24 Tools: Free PDF solutions for all PDF problemstools.pdf24.orgofficial
- PDF24 Creator - Download - 100% free (Windows software)tools.pdf24.orgofficial
- Trustpilot reviews of tools.pdf24.org (4.5, 113 reviews)trustpilot.comreview
review
- PDF24 Online Tools - Microsoft Store (3.8, 24 ratings)apps.microsoft.comreview
review
- PDF24 Creator (or other recommended PDF tool) - Spiceworkscommunity.spiceworks.comreview
security
security
- Stirling PDF homepagestirling.comofficial
- Stirling PDF security pagestirlingpdf.comofficial
- Stirling PDF Paid Offeringsdocs.stirlingpdf.comofficial
official
- Stirlingpdf.com Trust Score 66/100gridinsoft.comsecurity
- Stirling-PDF Reviews . SourceForgesourceforge.netreview