When to compare PDFs
The most common scenarios: a client returned a "signed" contract and you want to verify nothing was changed, you're reviewing two versions of a report and need to identify what was updated, a colleague sent a revised document and you want to see exactly what changed without reading the whole thing again.
How to compare two PDFs free
- Open ihatepdf.cv/compare-pdfs
- Upload the first PDF (original version) on the left
- Upload the second PDF (revised version) on the right
- Both documents display side by side with synchronized scrolling
- Scroll through both simultaneously to spot visual differences page by page
What to look for when comparing PDFs
- Text changes — words added, removed, or reworded in a contract or agreement
- Number changes — pricing, dates, quantities, or legal clause numbers
- Layout changes — sections moved, pages added or removed
- Signature presence — confirm a signature was added to the correct fields
- Formatting changes — subtle changes to formatting that might indicate unauthorized modifications
Compare PDFs before signing a contract
Before signing any returned contract, compare it against the version you originally sent. Upload both files, scroll through side by side, and verify that no text was quietly changed in the clauses. This takes two minutes and can prevent costly disputes.
Frequently asked questions
Does the comparison tool highlight differences automatically?
The tool provides synchronized side-by-side viewing — scroll both documents together to visually spot differences page by page. This is the most reliable approach for PDF comparison, as automated highlighting can miss subtle layout changes.
Are my documents uploaded to a server?
No. Both PDFs are loaded and displayed entirely in your browser. Nothing is uploaded.
Is there a page limit?
No. Compare PDFs of any length.