How it works
- 1Choose the old and new PDF files.
- 2Scan matching page numbers for visible differences.
- 3Open a page to inspect A, B, overlay and diff views.
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BROWSER · PDF.js visual diff
Visual PDF Compare
Compare two PDFs visually in your browser. Scan page-by-page differences and inspect side-by-side, overlay and red diff views without uploading files.
✓ Page-by-page visual difference scan✓ A / B / overlay / diff inspection✓ Adjustable sensitivity
Choose two PDFs.
This compares visible rendering, not metadata or legal/semantic meaning. Matching page numbers are compared.
About this tool
Visual PDF Compare renders both PDFs with PDF.js and compares page pixels locally. It is designed to show visible layout and content changes rather than semantic meaning.
Common uses
pdf diffcompare pdf pagespdf changes
Frequently asked questions
What does this tool compare?
It compares the rendered appearance of matching page numbers, including text layout, images and visible marks.
Is this the same as text similarity?
No. Visual comparison detects visible pixel changes. Toolardo's PDF Similarity Checker is better for content similarity and reordered pages.
Can a visually identical PDF still be structurally different?
Yes. Metadata, hidden objects, tags or internal PDF structure can differ without changing the rendered page.
Are my PDFs uploaded?
No. Rendering and comparison are performed locally in your browser.