Word Diff -
Compare Two Word Documents Online
Compare two Word documents online and see every difference in seconds. Four views — rich text for changes on the rendered page, plain text for word-by-word edits, redline for legal markup, and details for file metadata. It reads both .doc and .docx, and no Microsoft Word or Office subscription is needed.
Your documents stay completely private: the entire comparison runs in your browser, so contracts, NDAs, HR letters, and manuscripts never leave your device. The redline export saves back as a Word .docx with the changes marked, ready to hand to counsel or a counterparty.
Four Ways To Compare Word Documents
Pick the view that matches what you're reviewing, and switch between them freely without re-uploading — the same two documents flow through every mode.
Rich Text. Changes shown in place on the rendered pages — removed text in red, new text in green, edits highlighted — so you read the difference the way the document actually looks.
Plain Text. Text from both documents side by side or unified, with differences highlighted word by word. Formatting is stripped so you focus purely on the wording.
Redline. New wording underlined, removed wording struck through, combined into one marked-up document — the comparison format legal reviewers expect.
Details. A side-by-side table of each file's properties — page and word count, author, dates, revision, application, and more — with the differences called out.
Legal Redline Comparison For Contracts
Redline mode produces the marked-up draft legal reviewers know: new wording underlined in blue, removed wording struck through in red, all in one document that reads like a tracked-changes review. It's built for contract negotiation, where the question is always "what exactly changed between these two versions?"
The redline exports back as a Word .docx with the insertions and deletions marked, so it opens directly in Word (or any compatible editor) ready to keep editing — not a flattened image or a read-only file. The comparison runs entirely on your computer, so confidential drafts and signed agreements never leave your device.
What The Redline Export Includes
- A Word .docx with insertions and deletions marked in place
- Opens straight in Word or any compatible editor, ready to edit
- Both .doc and .docx inputs supported
- Generated in your browser — nothing uploaded
Compare Documents For Differences Or Similarities
Comparing two versions of a document is usually about one of two questions: what changed, or how much is the same. This tool answers both visually — every difference between the two files is highlighted, while identical passages stay neutral, so a heavily revised document lights up and a near-duplicate stays mostly quiet. That makes it a fast way to compare two Word documents for differences, or to eyeball how similar two drafts are before a closer read.
It's a structural and textual comparison, not a plagiarism score or a similarity percentage — it shows you where two documents agree and differ rather than assigning a number. For checking whether one draft was copied from another, or which sections two documents share, the side-by-side highlighting makes the overlap and the changes obvious at a glance.
How To Compare Two Word Documents Online
Four steps — no Microsoft Word, no sign-up, nothing uploaded.
- 01Add Your Original. Drag your .doc or .docx onto the left panel or click to browse. It's parsed and rendered in the browser — nothing is sent to a server.
- 02Add The Changed Version. Drop the newer version on the right. Both documents load together and line up automatically.
- 03Pick A View. Switch between Rich Text, Plain Text, Redline, and Details — the documents stay loaded as you move between them.
- 04Export The Redline. Download the redline as a Word .docx with the changes marked, ready to send to a reviewer or keep editing.
Why Use This Word Compare Tool
Free, private, and no Microsoft Word required. Eight things make it stand out:
- 01No Microsoft Word Needed. Both .doc and .docx are parsed and rendered in the browser, so you can compare documents without Word, an Office subscription, or any install.
- 02Rich-Text In-Place Diff. Changes are shown on the rendered pages in colour — removed in red, added in green, edits highlighted — the same visual language as Word's track changes.
- 03Word-Level Plain Text. A formatting-stripped view highlights exactly which words changed, side by side or unified, when you care about wording rather than layout.
- 04Editable Redline Export. The redline saves as a real Word .docx with insertions and deletions marked, so it opens in Word ready to keep editing — not a flat image or PDF.
- 05Full Document Details. Page and word count, characters, paragraphs, author, created and modified dates, revision, and application — compared side by side with the differences flagged.
- 06Mixes .doc And .docx. Compare an old .doc against a modern .docx freely; both formats are read by the same engine.
- 07100% Private. Documents never leave your device — the whole comparison runs client-side, which makes it safe for contracts, NDAs, and HR letters.
- 08Free, No Sign-Up. No registration, no quota, and no premium tier gating any view or the redline export.
Contracts, Proposals, And More
Any Word document — a modern .docx or an older .doc from an archive. These are the comparisons people run most.
Legal & Contracts
Contract redlining, NDA revisions, settlement agreements — redline mode produces the marked-up draft lawyers expect, as an editable Word file.
- Comparing contract versions during negotiation
- NDA and master-agreement changes
- Privacy-policy and terms-of-service updates
- Legal opinions and memos
- Settlement-agreement drafts
Business Documents
Proposals, reports, and meeting minutes — compare drafts without opening Microsoft Word.
- Client proposal revisions
- Board-report versions
- Meeting-minutes differences
- Business-letter drafts
- Internal policy updates
Academic & Technical
Papers, theses, specs, and manuals — plain-text view strips formatting so you focus on the words.
- Peer-review rounds on research papers
- Thesis and dissertation drafts
- Technical-specification updates
- User-manual revisions
- Grant-proposal versions
Frequently Asked Questions
How do I compare two Word documents online?
Drag the original into the left panel and the changed version into the right, or click to browse. Every difference is highlighted automatically, and you can switch between rich text, plain text, redline, and details views at the top — no Compare button to press.
Do I need Microsoft Word installed?
No. Both .doc and .docx are parsed and rendered entirely in your browser, so no Word installation and no Office subscription are needed to compare documents or export a redline.
What file formats are supported?
Both .doc (Word 97–2003) and .docx (modern Word). You can mix them freely — a .doc on the left and a .docx on the right compare just fine.
How does redline mode work?
It combines both documents into one marked-up draft with new wording underlined in blue and removed wording struck through in red. You can export that as a Word .docx with the changes marked, ready to open in Word and keep editing.
Can I compare two Word documents and highlight the differences?
Yes — that's the default. Rich Text shows the changes in colour on the rendered pages, and Plain Text highlights exactly which words differ, side by side or unified.
Can I compare two documents for similarities?
Yes, visually. Identical passages stay neutral while differences are highlighted, so shared and changed sections are obvious at a glance. It's a structural comparison rather than a plagiarism scanner — it shows where two documents agree and differ, not a similarity percentage.
Can it compare formatting and metadata, not just text?
Yes. The Details view puts both files' properties side by side — page and word count, author, created and modified dates, revision, and application — and highlights what differs between them.
What does the export produce?
The redline export is a Word .docx with insertions and deletions marked in place, so it opens directly in Word or any compatible editor. It's an editable document, not a flattened image.
Are my documents private?
Yes. Everything runs in your browser — your documents are never uploaded, stored, or sent to a server. That makes it safe for confidential contracts, NDAs, and HR letters.
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