Visual & Semantic PDF Comparison Studio
Audit contract revisions with pixel-diff heatmaps, split curtain loupe, and downloadable diff reports.
Spot exact pixel and text differences between two PDF contract revisions locally in your browser with side-by-side sync, curtain slider, and diff reports.
Is Visual & Semantic PDF Comparison Studio safe for confidential documents?
Yes. MantaPDF processes your PDFs 100% locally inside your browser memory using WebAssembly — zero bytes are ever uploaded to a server.
Does this PDF tool work offline without an internet connection?
Yes. Once loaded or installed as a PWA on your phone or laptop, all PDF operations run completely offline at native speed.