Compare PDF
Compare PDF lets you upload two PDF versions to run a side-by-side text diff, highlighting changes. All processing happens locally in your browser, so private files never leave your device.
At a glance
- Tool: Compare PDF
- Category: PDF utility
- Price: Free forever — no premium tier, no watermark
- Account: Not required
- Processing: On-device (WebAssembly / HTML5), zero uploads
- Privacy: Files never leave your device
How to Use Compare PDF:
Upload two PDF documents. The comparison engine highlights textual and visual differences side-by-side to track document revisions.
Key Features & Advantages:
- 100% Free with absolutely no credit card requirements
- No signup, registration, or email authentication ever needed
- Infinite conversions/calculations with no daily caps or throttling
- Blazing-fast client processing with high-performance algorithms
- Clean, eye-safe theme with full responsive layout controls
Frequently Asked Questions (FAQs):
Is the Compare PDF tool free to use?
Yes. Compare PDF on FreeConvertio is completely free, with no sign-up, watermark, or hidden fees.
Does Compare PDF upload my file to a server?
No. Compare PDF runs 100% inside your browser. Your file is processed locally on your device and is never uploaded anywhere, which keeps it private and secure.
Is there a file size limit for Compare PDF?
Since Compare PDF processes files entirely in your browser, the practical limit depends on your device's memory rather than a server-side cap. Most everyday files convert instantly.