Formats
Every common document
DOCX, DOC, PDF, PPTX, PPSX, ODT, ODP, RTF, EPUB, HTML, Markdown and TXT — compared in any combination.
Docs & File Diff Checker · Word · PDF · PowerPoint
Compare any two documents.
Drop two Word, PDF or PowerPoint files — even different formats — and see every added, removed, moved and reformatted passage, page by page.
Original document
Reading document…
Changed document
Reading document…
View
Results appear here.
Drop two documents to see what changed
Compare Word, PDF and PowerPoint files — even a PDF against a Word file. Everything is read in your browser; nothing is uploaded.
How It Works
Three steps. No sign-up.
- 1
Drop a document on each side — or click to choose. You can mix formats, like a PDF on one side and a Word file on the other.
- 2
Press Compare Documents. Text is extracted in your browser and matched paragraph by paragraph, with word-level highlights.
- 3
Review changes with their page or slide number, jump between them, get an AI summary, and save the comparison as PDF or HTML.
Features
Built for real-world data.
Cross-format
PDF vs Word, side by side
PDF lines are rebuilt into real paragraphs, so a signed PDF compares cleanly against the Word file it came from.
Formatting
Formatting changes flagged
Bold, italic, underline, font, size and color changes are called out even when the words stay the same.
Moves
Moved paragraphs detected
Reordered sections are marked as moved with a jump link — not reported as a deletion and a rewrite.
Clean
Noise filtered out
Repeated PDF headers, footers and page numbers are ignored. Optionally ignore case and punctuation too.
Private
Never uploaded
Contracts and confidential decks are read by your browser only. Works offline once installed.
FAQ
Questions & answers
Which file types can I compare?
Word (.docx, .docm, .dotx and older .doc), PDF, PowerPoint (.pptx, .ppsx, .potx), OpenDocument (.odt, .odp), RTF, EPUB, HTML, Markdown and plain text. Any two can be compared with each other.
Can I compare a PDF with a Word document?
Yes. Both are turned into paragraphs first — PDF line breaks and hyphenation are reflowed — so you see real wording changes rather than layout noise.
Are formatting changes detected?
For Word, PowerPoint, OpenDocument, HTML and EPUB files, changes to bold, italic, underline, strikethrough, font, size and color are listed on the affected paragraph. PDF and .doc files are compared by text only.
What about tracked changes in Word?
Documents with tracked changes are compared as if all changes were accepted, and you’ll see a note about it.
Are speaker notes and tables compared?
Yes. PowerPoint speaker notes are compared per slide, and table rows in Word, PowerPoint and OpenDocument files are compared row by row.
Can it compare scanned PDFs?
Scanned PDFs without a text layer can’t be compared yet, because that needs OCR. PDFs exported from Word, Google Docs or other apps work great.
Is my document uploaded?
No. Files are read and compared entirely in your browser. Password-protected PDFs are unlocked locally too.
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