Word Diff
Compare Word Documents Online
Compare Word documents online with a free Word compare tool that shows every difference in seconds. Five viewing modes cover every kind of review. Rich text for in-place changes, plain text for word-level edits, redline for legal markup, image for visual layout checks, and details for file-level facts. Works on both .doc and .docx, with no Microsoft Word needed.
Every Word document comparison runs in your browser, so contracts, NDAs, HR letters, and manuscripts stay private on your own device. Two Word docs can be compared side by side without uploading either one. The redline export saves as one clean PDF with new wording underlined in blue and removed wording crossed out in red, ready to share with counsel, a counterparty, or a client.
Five Ways To Compare Word Documents And Word Files
Different Word documents call for different kinds of review. Pick the mode that matches the question you're asking, and switch between them freely without re-uploading your Word files.
Rich Text
Shows the changes right on top of the rendered document pages. Removed text in red, new text in green, edits in yellow. The same look as Word's built-in track changes, but applied to any two documents you already have on your computer.
Plain Text
Lines up the text from both documents in two clean columns, side by side, with differences highlighted word by word. Formatting, fonts, and headers are stripped away, so you can concentrate on the wording without visual distractions.
Redline
The classic legal redline. New wording is underlined in blue, removed wording is crossed out in red, all in a single document ready to share with a lawyer or reviewer. Standard format for contract markups, NDA revisions, and anything that needs a familiar track-changes look.
Image
Compares both documents as rendered pages, picture by picture, which catches anything the eye can see: font swaps, shifted margins, moved headers. Five sub-views let you flip, fade, slide, highlight, or subtract one page from the other.
Details
Lines up the basics of both files side by side: page count, word count, file size, author, last modified date, and document properties. Handy as a first check before diving into the actual content.
Legal Redline Comparison For Contracts
Redline mode produces the exact markup every legal reviewer already knows. New wording is underlined in blue, removed wording is crossed out in red, all in one clean document that reads like a marked-up draft. Drop in two versions of a contract, NDA, or master agreement, and the result is ready to send to counsel, a counterparty, or the other side of a negotiation.
The redline saves as a standalone PDF that opens in any reader, so whoever you send it to can read it without installing anything. And because the whole comparison happens on your computer, the document never leaves your device. Safe to use on confidential drafts, signed agreements, and anything else covered by a confidentiality clause.
What The Redline Export Includes
- One clean PDF with every new line in blue and every removed line crossed out in red
- A summary at the top showing how many insertions, deletions, and edits were found
- Line numbers from the original document so reviewers can point to exact spots
- Opens in any PDF reader, on any device, with no extra software needed
How To Compare Two Word Documents And Highlight Differences Online
Four simple steps to compare 2 Word docs or compare two Word files online. No Microsoft Word needed, no sign-up, no waiting in a queue.
Upload Your Original Document
Drag your first .doc or .docx onto the left panel, or click to pick it from your files. It loads right there in your browser, with no server round-trip and no upload wait.
Upload The Changed Document
Drop the newer version on the right. Both files load at the same time, so you can start comparing as soon as the slower one finishes loading.
Pick A Comparison Mode
Switch between Rich Text, Plain Text, Redline, Image, and Details at the top. Your documents stay loaded the whole time, so you can move between modes as often as you like.
Download The Result
Save the comparison as a new PDF to email to a colleague or a reviewer. The redline export is especially handy for legal work, since it lands as one document that opens anywhere.
Why Pick This Free Word Compare Tool
Free, private, and built around the kinds of word-to-word comparison people actually run. No accounts, no waiting, and nothing held back behind a paid upgrade.
Fast Comparison
Most comparisons finish in a few seconds, even for long documents. No queue, no upload wait, no processing slot to book.
Your Files Stay Private
The comparison happens on your own device, which means your .doc and .docx files never travel anywhere else. Safe for confidential contracts, NDAs, HR letters, and internal business documents.
See Changes Visually
Differences are shown in colour right on the rendered document pages. Red for removed, green for added, yellow for edits. It's the same visual language reviewers already know from Word's built-in track changes.
Five Comparison Modes
Rich Text for an overlay view, Plain Text for pure wording review, Redline for legal markups, Image for visual layout comparison, and Details for file properties. Every kind of review has a mode that fits.
Legal Redline Export
The redline exports to a clean PDF with new text in blue and removed text in red, all in one document ready to hand to a reviewer. Opens in any PDF reader, so there are no compatibility hassles.
Works Without Internet
Once the page has loaded, you can turn the wifi off and keep comparing documents. Useful on a plane, in a secure office, or anywhere online tools aren't allowed.
Download As A PDF
Save the comparison as a new PDF so you can email it, archive it, or drop it into a shared folder. Rich text, image, and redline exports all save cleanly.
Works Everywhere
Runs in any modern browser, on a laptop or a phone. Nothing to install and nothing to configure. Open the page and you're ready to compare.
No Sign-Up
Open the page, drop in two Word documents, and start comparing. No email, no account, no credit card. Free for personal and business use, with no daily limit.
What You Can Compare: Word Documents, Contracts, And More
Any Word document you've got, whether it's a modern .docx or an older .doc from an archive. Here are the situations where the Word document comparison tool tends to save the most time.
Legal And Contracts
Contract redlining, NDA revisions, settlement agreements, and legal correspondence. The redline mode produces exactly the kind of marked-up document lawyers and paralegals expect, ready to share with counsel without any extra formatting.
- Comparing two versions of a contract during negotiation
- Reviewing NDA and master agreement changes
- Updating privacy policies and terms of service
- Going through legal opinions and memos
- Reviewing settlement agreement drafts
Business Documents
Proposals, reports, presentations, and internal documentation. Compare two drafts of a quarterly report, two rounds of a client proposal, or two versions of meeting minutes, all without opening Microsoft Word.
- Tracking revisions on a client proposal
- Comparing board report versions
- Spotting differences in meeting minutes
- Reviewing business letter and email drafts
- Checking updates to internal policies and handbooks
Academic And Technical
Research papers, theses, technical specifications, and user documentation. The plain text mode is especially useful for academic work, since it strips out formatting so reviewers can focus on the words themselves.
- Going through peer-review rounds on a research paper
- Comparing thesis and dissertation drafts
- Reviewing updates to technical specifications
- Checking user manual revisions
- Auditing grant proposal versions
Frequently Asked Questions
What is a Word diff tool?
A Word diff tool, also called a Word compare tool or Word document difference checker, looks at two Word documents (.doc or .docx) and shows you what changed between them. Added text, removed text, and edits are shown in colour on the rendered pages or side by side in plain text, so you can see at a glance how one version differs from the other.
How do I compare two Word files online?
Drag your original Word document into the left panel and the changed version into the right panel. The tool reads both files, lines up the pages, and highlights every difference. Switch between Rich Text, Plain Text, Redline, Image, and Details at the top to pick the view that matches what you're looking for.
Is this online Word compare tool free?
Yes, completely free for personal and business use. No sign-up, no daily limit, no paid upgrade, and no features locked behind an account. Compare as many Word documents as you need, as often as you need.
Can I compare two Word documents and highlight differences?
Yes. Drop your original document on the left and the changed version on the right, and every difference is highlighted automatically. Added wording shows up in green, removed wording in red, and edits in yellow, so you can see at a glance how one version differs from the other.
Can I compare two Word files for differences?
Yes. The Word file compare tool handles both .doc and .docx files and works on either side. Compare two Word documents for differences in wording, layout, or metadata using any of the five viewing modes, and download the result as a new PDF to share.
Is my data safe when I compare Word documents here?
Yes. The whole comparison happens on your own computer, right in your browser. Your .doc and .docx files aren't uploaded, stored, or sent anywhere. That's especially important for Word documents, since they tend to be the contracts, HR letters, and manuscripts that confidentiality clauses are written to cover.
What file formats are supported?
Both .doc (the older Word 97-2003 format) and .docx (the modern format) are supported. You can even mix them between the two sides. Compare a .doc on the left with a .docx on the right and the tool handles the conversion itself, with no extra step for you.
Do I need Microsoft Word installed?
No, not at all. The whole comparison runs in your browser, and both .doc and .docx files are opened and read directly. Word doesn't need to be installed on your computer, and you don't need an Office subscription to use the tool.
How does the redline view work?
Redline gives you a single document with new wording underlined in blue and removed wording crossed out in red. It's the same format contract reviewers and lawyers have always used, so the output is ready to share with counsel or a counterparty without any extra formatting. Export it as a PDF and it opens in any PDF reader.
Can I compare the formatting as well as the text?
Yes. Image mode renders both documents as pages and compares them visually, so formatting changes like font swaps, margin shifts, and layout differences show up clearly. Pair it with Rich Text mode and you get both content and formatting review in one session.
Can I save the comparison?
Yes. Rich Text saves as a new PDF with the coloured overlay on the original pages. Image saves the visual comparison. Redline saves a standalone marked-up PDF ready to hand to a reviewer. All of them download straight from your browser with one click.
Does it work without an internet connection?
Yes. Once the page has loaded, you can disconnect from the internet and keep comparing Word documents without losing a beat. Everything runs on your own device, so nothing needs the network to keep working.
Start Your Word-To-Word Comparison - Free
Scroll up and upload your Word files. No sign-up, no downloads, no limits.