Compare two PDFs side by side

Spot every difference between two PDF versions instantly. Visual diff highlighting, overlay mode, and page-by-page comparison. No uploads, no accounts — runs in your browser.

Compare PDFs Now — Free

No file uploads

Visual diff

No account needed

Drop your PDF here to get started or click to browse files

How to compare PDFs

Open your first PDF

Launch PhantomEtch and open the original PDF by dragging it in or pressing Ctrl+O.

Load the second PDF

Open the More menu and click "Compare." Browse for the second PDF you want to compare against the first.

Review differences

PhantomEtch highlights every change — additions, deletions, and modifications — in a side-by-side or overlay view. Navigate page by page to review all differences.

Frequently asked questions

What types of differences are detected?+

PhantomEtch detects visual differences between the two documents, including text changes, image modifications, layout shifts, added or removed elements, and formatting changes. Every pixel-level difference is highlighted for easy review.

Is there an overlay mode?+

Yes. In addition to side-by-side comparison, PhantomEtch offers an overlay mode that layers the two documents on top of each other. Differences are highlighted in color, making it easy to spot even subtle changes at a glance.

Can I compare multi-page PDFs?+

Absolutely. PhantomEtch compares documents page by page, regardless of length. You can navigate through each page pair and see differences highlighted on every page. It also handles documents with different page counts.

Is the comparison tool free?+

Yes. PDF comparison in PhantomEtch is completely free with no limits. No watermarks, no page count restrictions, no hidden costs. Just open two files and compare.