Compression quality
Inspect photographs, gradients, diagrams, and small text after reducing a PDF’s file size.
Compare PDFs online
Use this free PDF comparison tool to inspect two PDFs page by page with an opaque slider or synchronized side-by-side view. Files chosen from your device stay in your browser and are never uploaded.
Side 1
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Side 2
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Side 1
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These pages have different dimensions or rotation. They are centered and fitted without cropping, so their contents may not align exactly.
PDFs selected from your device stay in this browser. Public PDF URLs are fetched directly from their original host and must allow CORS.
What page-by-page PDF comparison reveals
Export changes
Check whether page dimensions, rotation, graphics, or visual layout changed between exports.
Readable detail
Zoom both versions together and compare fine print, chart labels, signatures, and scanned pages.
PDF comparison questions
No. PDFs chosen from your device are read and rendered inside your browser tab and are not uploaded to GetCompress.
Public PDF URLs are requested directly from their original host. We record only limited source and control usage data, never PDF content, filenames, URLs, page counts, dimensions, or current page numbers.
Both matching pages are rendered as opaque layers. The slider clips the layers at one position; it does not make either PDF transparent.
Yes. Page navigation follows one shared page number up to the longer document. A missing-page placeholder appears on the shorter document, and differently sized pages show an alignment warning.
The address must point to a PDF whose host allows cross-origin browser requests. Download the PDF and choose the local file instead when the host blocks CORS or requires authentication.
No. This is a visual page comparison for rendered output. It does not compare text semantics, form values, comments, metadata, or document structure.