Compare PDFs
Compare two PDF documents side by side in your browser. Highlights added and removed text lines, page counts, and file-size differences.
Drop Document A
Original document
Select one file · Processed 100% locally
Drop Document B
Modified document
Select one file · Processed 100% locally
How to Use Compare PDFs
Upload Both PDFs
Drop Document A (original) and Document B (modified).
Run Comparison
Click Compare to analyze page counts, sizes, and text differences.
Review Highlights
Inspect added, removed, and matching text lines side by side.
Capabilities & Features
- •Compare file size and total page counts
- •Line-by-line text content difference analysis
- •Visual color-coded diff (green for added, red for removed)
- •Comparison summary statistics
Important Notes & Limitations
- •Text comparison relies on embedded text layers. Scanned bitmap PDFs, images, and non-text visual alterations are not detected by text diffing.
Client-Side Privacy Guarantee
When using Compare PDFs, your files, extracted text, and document metadata are processed exclusively inside your browser using client-side JavaScript, WebAssembly, and native Web Crypto APIs. Your document data is never sent to our servers or any cloud service. Once you close this tab or click clear, volatile memory is automatically released.
Frequently Asked Questions
Can this compare scanned contracts?
If the PDFs do not have embedded text layers, text diffing cannot read the contents. Scanned documents require visual pixel comparison.
Are both documents kept confidential?
Yes. Both documents are processed exclusively in your browser memory.
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