How to audit all differences between two pdf document versions
- Step 1Upload the previous approved version — Drop the baseline PDF into the diff tool.
- Step 2Upload the revised version — Drop the updated PDF alongside.
- Step 3Generate the diff report — Produce a comprehensive list of all text changes.
- Step 4Include in the change management record — Attach the diff report to the change management or document control record.
Frequently asked questions
Can the diff report be included in an ISO 9001 document control record?+
Yes — a PDF diff report provides evidence of the specific changes made between document versions, suitable for ISO 9001 change management records.
What format is the diff report output?+
The diff report is available as an annotated PDF (with changes highlighted) or as a text file listing all additions and deletions.
How are minor formatting changes handled in the audit report?+
Text content changes are captured. Formatting-only changes (font size, line spacing) without text content changes may not appear in the diff. Document formatting is governed separately in most compliance frameworks.
Privacy first
All PDF processing runs locally in your browser using PDF-lib and pdf.js. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.