AI Detector for Word Documents
Import a .docx and check it for AI writing without copying a word. The file is unpacked in your browser and never uploaded. Tracked changes, comments and footnotes are handled the way you would expect.
To check a Word document for AI, import the .docx and score its body text. Humanit unpacks the file in your browser, reads the document as if all tracked changes were accepted, leaves out comments and footnotes, and rates the prose 0–100.
Quick facts
- Files
- Word .docx. ODT, RTF, PDF, TXT and photos work too; old .doc does not.
- Is the file uploaded?
- No. The file is unpacked inside your browser; only its text goes into the editor.
- Words per check
- 300 words a check without an account, 1,500 with a free one, up to 6,000 on paid plans.
- Scanned pages
- Read with OCR on a free account: 10 pages a day, 100 on paid plans.
- File limits
- 20 MB per file, up to 30 pages or photos at once.
- Cost
- Free. The detector never spends words, with or without an account.
How it works
- 1Import the .docx. Drop it on the box or choose Import a Word file. Paragraphs come in exactly as written.
- 2Settle tracked changes first. Accept or reject them in Word, so the text you score is the version you will submit.
- 3Check it a section at a time. 300 words a check with no account, 1,500 with a free one. Headings make natural break points.
- 4Go back to Word with the flagged phrases. Use the highlighted phrases to find the sentences worth rewriting in your document.
What the detector reads in a .docx
A .docx is a zipped bundle of XML files, and the words you wrote live in one of them. The importer opens that bundle inside your browser and reads the main document: every paragraph and heading, with paragraph breaks kept exactly, and the text inside tables, which comes in one cell per line. Comments, footnotes, endnotes, headers and footers are stored in separate parts of the file and are left out, so the score reflects your body text and nothing else. Images and equations built with Word's equation editor are skipped.
Tracked changes: you are checking the accepted version
If the document has tracked changes, the importer reads it as though every change had been accepted: deleted text is dropped and inserted text is kept. Usually that is what you want, because it is what the document says now. It matters in two situations. If a tutor or a colleague suggested edits you have not decided on, their wording will be scored as part of your text, so accept or reject them first. And if you are a teacher checking a file that went through peer review, the score covers the final wording, not who typed it.
Word does not have an AI detector of its own
Microsoft Word can tell you a lot about a document, but not whether it reads as AI-written. Microsoft 365's Editor includes a Similarity check, which compares your text against online sources; that is a plagiarism-style check, a different question entirely. Copilot can write and summarize inside Word, but it does not score text for AI. So the practical route is to bring the file to a detector, and importing it is quicker and cleaner than copying, because nothing from the comment margin or the header comes along by accident.
Long documents: use your headings
A free account checks 1,500 words at a time, roughly three pages single-spaced, and paid plans go up to 6,000. For a long report or a dissertation chapter, open Word's Navigation pane (View, then Navigation Pane) and work heading by heading: import the document, delete everything outside the section you are checking, run it, then repeat with the next section. A section-level picture is also more honest than one number for twenty pages, since a single drafted-with-AI section can disappear into an average.
Your own evidence lives in Word, too
If you wrote the document yourself and it scores high, the file can help you show that. Documents saved to OneDrive or SharePoint keep a version history (File, then Info, then Version History), which shows the document growing over days rather than appearing in one paste. On Windows, the document properties also record a total editing time. Neither is proof on its own, but a visible drafting history is far more persuasive than any counter-score from another detector. Keep earlier copies and notes until the work is marked.
For teachers checking submitted Word files
A Word submission gives you more context than pasted text: you can see its tracked changes, its comments and, in many cases, its version history. Use the AI score as the start of a look, not the end. Compare the writing with the student's earlier work, look at where in the document the flagged phrases cluster, and talk to the student before drawing conclusions. Detectors over-flag formal and non-native writing, and Turnitin's own guidance asks for corroborating evidence before any action. The file is read locally here; the text you score is sent for analysis, so check your institution's rules on outside tools.
Who it's for
| In your Word file | What the import does | Before you check it |
|---|---|---|
| Paragraphs and headings | Imported with every paragraph break exactly as written. | This is what gets scored. |
| Tables | Each cell comes in as its own short paragraph. | Delete tables of data; they are not prose. |
| Tracked changes | Deleted text is dropped and inserted text kept: the document as if every change were accepted. | Accept or reject changes in Word first. |
| Comments | Not imported. | Nothing to do. They never reach the detector. |
| Footnotes and endnotes | Not imported. | Nothing to do. |
| Headers and footers | Not imported. | Nothing to do. |
| Citation fields (Zotero, Mendeley, EndNote) and tables of contents | The visible text is imported; the field code behind it is not. | Delete a table of contents if it came through. |
| Older .doc files (Word 97–2003) | Not supported. Save as .docx and import that. | In Word: File, Save As, Word Document (.docx). |
| Apple Pages files | Not supported. Export to Word or PDF first. | In Pages: File, Export To, Word. |
| File type | Works? | Notes |
|---|---|---|
| .docx (Word 2007 and later) | Yes | Body text and tables; comments, notes, headers and footers left out |
| .odt (LibreOffice, OpenOffice) | Yes | Notes, annotations and tracked-change history left out |
| .rtf | Yes | Headers, footers and footnotes left out |
| .txt / .md | Yes | Read as written |
| .doc (Word 97–2003) | No | Save as .docx first |
| .pages | No | Export to Word or PDF first |
Frequently asked questions
Can I check a Word document for AI without copying and pasting?
Yes. Import the .docx and its text appears in the editor, ready to check. The file is unpacked in your browser and is never uploaded.
Does Microsoft Word have an AI detector?
No. Word's Similarity check compares text with online sources, which is a plagiarism check, and Copilot writes and summarizes but does not score AI writing. You need a separate detector.
Are comments and tracked changes included in the check?
Comments are left out. Tracked changes are read as if accepted: deletions dropped, insertions kept. Accept or reject them first if they are not final.
Why can't it open my .doc file?
The old Word 97–2003 .doc format is a different, binary file type. Open it in Word, choose Save As, pick Word Document (.docx) and import that instead.
Is the Word document AI detector free?
Yes. It never spends words. Without an account each check covers 300 words; with a free account, 1,500.
Does importing change my document?
No. The importer only reads a copy of the text. Your .docx is never modified, renamed or uploaded.
Can a teacher tell if a Word document was written with AI?
Not with certainty. A detector gives a probability-style score that over-flags some honest writing. Teachers usually weigh it alongside version history, earlier work and a conversation.