Compare two PDF versions
Drop the old and new version: added words are underlined, removed ones struck through, each change a tap away.
- Runs on your device
- No sign-up
- Works offline after a visit
Drop both versions to start.
The changes appear here, with removed words struck through and added words underlined.
How to compare two PDF versions
- Drop the old version on the left and the new version on the right.
- Press Compare. Changed paragraphs appear with removed words struck through and added words underlined.
- Use Next and Previous change, the bar beside the text, or the n and p keys to move between changes.
Questions
Will the PDFs be uploaded?
No. Both files are read and compared inside your browser. Neither file leaves your device.
Why does a scanned PDF say it has no text?
Only text stored in the PDF can be compared. A scan is a picture of the page, so there is no text to read. Read it with Image to text first, then compare the text.
How are the changes found?
The text is read line by line and grouped into paragraphs, which start at a large gap or at a heading such as “Clause 14”. Paragraphs are matched first, then the words of each changed paragraph are compared one by one. Unusual layouts, such as text in columns, can be split in odd places.
Does it compare layout, images or formatting?
No. Only the text is compared. Moved images, changed fonts, table borders and text inside pictures are not checked.
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