Drop two versions
Word .docx or text PDFs, in any mix: an old contract against the signed PDF works too. Nothing is sent anywhere; the files are read by this page.
Document comparison
Compare the old draft any two versions. See every change.
Drop two Word documents or two PDFs. RedlineKit marks every inserted, deleted and moved word, lines the versions up side by side and lists the changes so you can step through them. Your files stay in your browser.
- Word (.docx) and PDF
- Files never uploaded
- Free on screen
RedlineKit runs here
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Step through every change
Word-level insertions, deletions and moved passages, side by side or inline, with a numbered change list and next/previous keys.
Export the redline
A PDF redline to send round, or a .docx whose changes are real tracked changes your reviewer can accept or reject one by one.
What you get
A redline a lawyer would recognise
Insertions underlined in blue, deletions struck through in red, moved text in green, every change numbered. The same marks on screen, in the PDF redline and in the change list, so “see change 14” means the same thing to everyone.
The Word export is the revised document itself, with each difference stored as a tracked change: accept them all and you have their version, reject them all and you have yours.
43. Term. This Agreement continues for two three years. The obligations of confidentiality survive for five years after it ends.
5On request, each party shall return or destroy all Confidential Information within 14 days 10 working days.
6Either party may end this Agreement by giving 30 days’ written notice.
What RedlineKit compares
Compared
- Body text of Word .docx files, including tables and lists
- PDFs that contain text (anything saved from Word, Google Docs and the like)
- A Word file against a PDF, either way round
- Word list numbers, when the other side is a PDF
Not compared
- Formatting (bold, fonts, spacing)
- Headers, footers, footnotes, comments, text boxes
- Scanned PDFs (no OCR) and images
- Old .doc files: save as .docx first
Where it runs
In this page, on your device. Both files are opened by your browser and never uploaded. Exporting sends only your credit key and a fingerprint of the pair, never the documents.
Compare free. Pay only to export.
Every comparison is free to view. When you need the redline as a file, one credit exports that pair as a PDF, as Word tracked changes, or both, as often as you like. Credits never expire.
One credit = one export. Credits never expire.
Questions
Are my documents uploaded?
No. Both files are opened and compared by this page in your browser. When you export, the page sends only your credit key and a fingerprint of the two files (a hash, which cannot be turned back into the text) so the same pair is never charged twice.
Which files can I compare?
Word documents saved as .docx and PDFs that contain text (most PDFs made from Word or other software). Scanned PDFs are pictures of pages and have no text to compare. Old .doc files need saving as .docx first. You can compare a .docx against a PDF.
What parts of a Word document are compared?
The body text, including text in tables and lists. Headers, footers, footnotes, comments and text boxes are not compared. If a file already has tracked changes, it is compared as if they were accepted.
Does it show formatting changes?
No. RedlineKit compares the words. A sentence that only changed from regular to bold is not marked as a change.
Will the Word export open in Microsoft Word?
The .docx export uses the standard Office Open XML tracked-change markup (w:ins and w:del), the same elements Word writes when Track Changes is on, so each change can be accepted or rejected. We check every release by opening the export in LibreOffice Writer, which lists each change as a tracked change.
What does one credit buy?
One export of one pair of files: the PDF redline, the Word tracked-changes file, or both, downloaded as often as you like. Comparing a different pair uses another credit. Credits never expire.
How are moved paragraphs shown?
When a paragraph, or a run of four or more words, is deleted in one place and appears unchanged somewhere else, it is marked as a move in green instead of as a separate deletion and insertion. The Word export records moves as a deletion and an insertion.