How to Compare Two Word Documents and See Every Change

If you searched "how to compare two Word documents," you probably have two versions of the same file and need to find exactly what changed. Maybe a colleague edited a contract and you need to see every revision before signing off. Maybe you sent a proposal last week, received it back with edits, and now want to know precisely what was modified. Maybe you are reviewing a policy update and need to catch every wording change, no matter how small.

This comes up constantly in any team that passes documents back and forth: contracts, reports, proposals, policies. You need to know what was added, what was removed, and what was reworded. Not a vague summary. The actual changes, word by word.

Word has Track Changes, but it only works if it was turned on before the edits were made. If someone edited the file without Track Changes, you are left comparing both files by eye. This guide covers a faster way.

Why reading both files side by side does not work

Small changes are invisible. A single word changed in a 10-page contract looks identical when you are scrolling through both files. You will miss it.
Track Changes must be enabled in advance. If the other person did not have Track Changes turned on, there is no built-in way to reconstruct what they changed. You are stuck.
Track Changes markup is cluttered. Even when it is available, the inline markup with colored text, strikethroughs, and comment balloons can make the document harder to read, not easier. Finding the actual substance of the change takes more effort than it should.
You need Word installed. Comparing documents in Microsoft Word requires a desktop license. If you are on a Chromebook, a shared computer, or just do not have Word installed, you are out of luck.
There is no clean summary. Even with Track Changes, there is no quick count of how many words were added, removed, or changed. You have to scroll through the entire document to understand the scope of the edits.

Input

contract_v1.docxOriginal

contract_v2.docxRevised

Two versions of the same document

Output

Highlighted diff view

12 added5 removed

Every change highlighted word by word

Two document versions compared, every edit highlighted inline or side by side

How to compare Word documents step by step

Open the Word Comparer, drop in both .docx files (the original and the revised version), and the tool shows you every difference with color-coded highlights.

Step by step

Drop both files into the Word Comparer. Drop the original on the left and the revised version on the right. It accepts .docx files.
Click Compare. The tool extracts the text from both documents and runs a word-level comparison.
Review the diff. Additions appear highlighted in green. Deletions appear in red with strikethrough. Unchanged text is shown normally for context.
Toggle between views. Switch between inline view (all changes shown in one stream) and side-by-side view (original on the left, revised on the right).

Every change highlighted automatically

+12 words added-5 words removedInline view

This Agreement is entered into between Acme CorpGlobex Industries (the "Client") and Jane SmithSarah Johnson (the "Consultant") effective January 15, 2026March 1, 2026.

The Consultant agrees to provide marketing strategybrand strategy and go-to-market planning services for a period of three monthssix months, at a rate of €5,000€7,500 per month.

Removed Added

Inline vs side-by-side view

The tool offers two ways to review changes:

Inline view shows the full text as a single stream, with additions and deletions marked inline. This is useful when you want to read the document naturally and see changes in context. It works especially well for shorter documents or when the edits are scattered throughout the text.

Side-by-side view shows the original on the left and the revised version on the right. This is better for longer documents or when you want to compare specific sections directly. You can scroll both panels and see exactly how each part of the document evolved.

Both views show the same changes. Choose whichever makes it easier to review the edits you are looking at.

Try it yourself

Every word added, removed, or changed. Color-coded and clear.

Open tool

When to compare Word documents

Contract revisions. A client or legal team sends back a revised contract. Before signing, you need to see every clause that was changed, every term that was added, and anything that was removed. Run a comparison and get the full picture in seconds.

Proposal edits. You sent a proposal to a prospect. They returned it with modifications to the scope, pricing, or terms. Compare both versions to understand exactly what they want changed before responding.

Policy updates. HR or compliance updates an internal policy document. Compare the new version against the previous one to see what rules changed, what was added, and what was removed. This is especially important for regulated industries.

Translation verification. You have an original document and a revised translation. Compare both to verify that nothing was accidentally added, removed, or altered beyond the intended translation changes.

Reviewing a colleague's edits. Someone edited a shared document and you need to review their work before publishing or sending it. Instead of reading the whole document, run a comparison and focus only on what changed.

How does this compare to other methods?

	Track Changes	Word Compare feature	Google Docs history	Online diff tools	PicoTools
Works after the fact	No (must be on before edits)	Yes	Partial (only Google Docs)	Yes	Yes
Word-level highlighting	Yes	Yes	No (version snapshots)	Varies	Yes
Inline + side-by-side	Inline only	Inline only	No	Some	Yes
No software needed	No (Word required)	No (Word required)	No (Google account)	Yes	Yes
Works on Mac	Yes (with Word)	Limited	Yes	Yes	Yes (any browser)
Clean change summary	No	No	No	Some	Yes (word count stats)
File privacy	Local	Local	Google servers	Uploaded to server	Local (browser only)

Your files never leave your device

All processing happens locally in your browser. Your .docx files are not uploaded, stored, or transmitted anywhere. The text is extracted and compared entirely on your device. This makes it safe to use with contracts, legal documents, confidential reports, or anything sensitive.

Frequently asked questions

What file formats does it support?

The tool works with .docx files (the standard Word format since 2007). If you have an older .doc file, open it in Word or Google Docs and re-save as .docx before uploading.

Does it detect formatting changes?

The comparison focuses on text content. It detects words that were added, removed, or changed. It does not currently flag formatting-only changes like font size, bold, or color changes.

Can I compare more than two documents at once?

The tool compares two documents at a time: an original and a revised version. If you need to compare three versions, run two separate comparisons.

Can I download the comparison results?

You can view the full diff in your browser with both inline and side-by-side views. The comparison is designed for on-screen review.

Does it support .doc files?

Not directly. The tool reads .docx format. If you have a .doc file, open it in any word processor and save it as .docx. The conversion takes seconds.

Does it work on a Mac?

Yes. The tool runs entirely in your browser, so it works on Mac, Windows, Linux, Chromebook, or any device with a modern browser. Microsoft Word's Compare feature, while available on Mac, requires a paid Word license.

Is it safe to use with confidential documents?

Your files never leave your device. Nothing is uploaded, stored, or visible to anyone. Processing happens entirely in your browser, and all data is gone when you close the tab.