Compare PDF
Compare two PDF files and see exactly what changed. Text diff and visual comparison. Free, secure and GDPR compliant.
Need to find the differences between two versions of a document? With PDF.dk you compare two PDF files for free and see every change highlighted — both as a text diff and a visual side-by-side view. The servers are located in the Nordics, and files are removed automatically after processing.
Frequently Asked Questions
- How do I compare two PDF files?
- Upload the original and revised PDF files. Our tool analyzes both documents and shows exactly what changes have been made.
- What types of differences can the tool find?
- The tool can find visual differences between pages as well as text changes, additions and deletions.
- Can I compare large PDF files?
- Yes, you can compare PDF files up to the maximum file size.
- Does the tool support scanned PDF files?
- The tool primarily compares text and visual elements. Scanned documents need OCR first.
- Do I get a report of the changes?
- Yes. Besides the on-screen view you can download a consolidated report summarising every detected change page by page — handy for documentation or sharing with colleagues.
- Can I compare two versions of a contract?
- Yes, that is a typical use: upload the original and the revised contract and get every text change highlighted — additions in green and deletions in red — so nothing is missed before signing.
- Is PDF comparison free?
- Yes, you can compare PDF files for free on PDF.dk.
- Are my files secure?
- Yes, all uploaded files are processed securely and automatically deleted after processing.
How to
- Upload the original PDF file
- Upload the revised PDF file
- Click "Compare" and wait for the analysis
- Review the found differences page by page