Text and visual modes
Word-level text diffs plus pixel overlays for layout and image changes.
Compare PDF Files
Compare two PDF files side by side. Spot text additions and removals, review visual page differences, and download a comparison report.
Original PDF
Revised PDF
Comparison optionsChoose how the two PDFs should be compared.
How to use Compare PDF Files
Get a reliable result in three straightforward steps.
Upload original and revised
Add two PDF files. Swap them if needed, then choose text, visual, or both.
Compare
Converto extracts text, aligns pages when counts differ, and highlights visual changes.
Review and download
Filter changed pages, inspect text diffs, and download the comparison report.
Built for everyday work
Useful without the busywork
Focused controls, immediate feedback, and no account between you and the result.
Page alignment
Inserted or deleted pages are detected instead of forcing same-index pairing only.
Exportable reports
JSON, CSV, and PDF summaries with private short-lived downloads.
Practical guide
What is Compare PDF Files?
Compare PDF Files finds differences between an original and a revised PDF using text extraction and optional visual page comparison.
Upload two PDFs, run a comparison job on Converto servers, then review added, removed, and modified pages. Download a JSON detail report, CSV summary, PDF summary, and visual overlay ZIP when visual differences are found.
Practical applications
When to use this tool
Common ways Compare PDF Files fits into real projects and daily tasks.
Contract revisions
Spot clause edits between versions before signing.
Design proofs
Catch layout or image shifts between PDF proofs.
Policy updates
Confirm which pages changed in a handbook update.
QA handoff
Share a CSV of changed pages with reviewers.
Privacy-first processing
Files deleted after processing
Uploads are handled only for the job you start, then cleared so nothing sits around as an archive.
Used for this job only
Uploads exist only long enough to complete the conversion you started.
Download when ready
Save your result as soon as processing finishes.
Not kept as an archive
We do not store finished files as a long-term library.
Helpful answers
Frequently asked questions
Quick answers about compare pdf files and how this page works.
Does Compare PDF understand meaning or verify signatures?
No. It compares extractable text and rendered page pixels. It does not provide semantic understanding or cryptographic signature verification.
What if the PDFs have different page counts?
Pages are aligned using text similarity when possible. Unmatched pages are marked added or removed.
Are my files public?
No. Uploads and reports use private storage with authorized downloads and automatic cleanup.
Is Compare PDF free?
Yes, with free-tier daily limits like other free PDF tools.