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Compare PDF Text
Extracts the text of both PDFs and diffs them line by line (longest-common-subsequence): removed lines are marked − with their page in A, added lines + with their page in B, unchanged lines kept for context. Text layer only — no OCR, no layout comparison, and it says so.
A little guidance. A better result.
How to use Compare PDF Text
Line-level LCS diff of two PDFs’ text with page references — removed/added/unchanged counts shown.
Prepare your input
Choose the original and revised PDFs.
Use the workspace
Review added, removed and unchanged text lines with page references.
Check your result
Check significant changes against the source pages.
Know the limits
Text-layer comparison does not perform OCR or compare layout; extraction order can affect the diff.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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