Jul 23, 2025 · DiffPDF is a straightforward yet powerful free utility for Windows that enables users to efficiently identify changes and differences between PDF files.

DiffPDF is useful for anyone who needs to compare PDFs, reports, books, or labels—for example, archivists, engineers, journalists, linguists, packagers, publishers, researchers, software testers, and …

Added --grayscale option to convert the diff output to grayscale and only use color for pixels with differences. This is useful for comparing documents that use colors and that may look confusing in …

Compare files (doc, docx, pdf, pptx, etc.) to find differences online. Use our desktop app for private, offline diffs.

Compare PDF documents privately and securely in your browser or via command line. No uploads, no servers, 100% client-side. Perfect for comparing contracts, invoices, and CI/CD pipelines.

By default the comparison is of the text on each pair of pages, but comparing the appearance of pages is also supported (for example, if a diagram is changed or if a paragraph is reformatted). It is also …

Easily review differences between two similar files with the PDF compare tool. Visualise highlighted document changes side by side.

Feb 13, 2026 · DiffPDF by Qtrac is a free, GPL - licensed utility built to compare two PDF files side - by - side and highlight differences. It targets users who want a simple way to spot changes between …

DiffPDF does exactly what it sets out to do: it compares two similar documents to spot any existing differences, and reports them to the user right away. Customize Windows’ original right-click...

PDF Diff streamlines your document review process, helping you work more efficiently and catch important changes that might otherwise be missed.