Compare PDF Versions
Stop guessing what changed between Rev A and Rev B. Upload both versions and see every revision difference highlighted directly on the page — in seconds.
Built for revision control
When you're managing a document through multiple revisions, knowing exactly what changed between each version is critical. PDFverifier compares any two PDF revisions and produces a precise visual diff — so you can confidently approve, reject, or comment on individual changes without re-reading the entire document.
Comment and approve changes
- Each detected change can be selected, commented on, and individually approved or rejected
- Export an annotated PDF showing only the changes you care about
- Batch process multiple revisions at once via ZIP upload
- Pro users keep 90-day session history to revisit past comparisons
Common revision-comparison scenarios
Drawing revisions
Track changes between Rev A → Rev B → Rev C of CAD drawings.
Contract drafts
See exactly what your counterparty changed before signing.
Specifications
Spot subtle spec changes that could affect tendering.
Approval workflows
Review and sign off on changes before final issue.
Track every revision change
Free previews — try it on a real revision pair before you commit.
Compare versions free →