OLDOlder version
Waiting for older filePDF, DOCX, image, TXT, MD or CSV
PRIVATE · BROWSER-FIRST DOCUMENT COMPARISON
Don't reread it.
See what changed.
Upload an older and newer version. Change Lense reads PDFs, DOCX files and photos, uses OCR when needed, and surfaces changes in price, dates, fees, benefits, obligations and terms.
✓ Source files stay in your browser✓ OCR runs on-device✓ No account required
COMPARE NOW
Upload the old and new version
Best effort automatic ordering is available, and you can always swap them manually.
Local processing
NEWNewer version
Waiting for newer filePDF, DOCX, image, TXT, MD or CSV
Upload both files to auto-check older/newer order.
Or paste text instead
Privacy-first modeUploaded files are processed in this browser. This version does not upload source files to a Change Lense server.
Ready.
HOW IT WORKS
Four steps. No rereading.
Add two versions
Upload both together or choose old and new manually.
Read locally
PDF text is extracted in-browser. Photos and scanned pages use OCR.
Find meaningful differences
Costs, dates, benefits, obligations and terms are prioritised.
Review the evidence
See before/after text and export the report for your records.
USE CASES