AI Detector for Google Docs
Google Docs does not score writing for AI. Download your Doc, drop the file in and check it here. Nothing connects to your Google account and the file is read in your browser.
Google Docs has no built-in AI detector. To check a Doc, choose File, Download, Microsoft Word (.docx), then import that file here. Humanit reads it in your browser and scores the text 0–100, highlighting the phrases that read as AI-written.
Quick facts
- Files
- Download the Doc as .docx, .pdf, .odt or .txt, or copy and paste it.
- Is the file uploaded?
- No. The downloaded file is read inside your browser, and nothing connects to your Google account.
- 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.
- Google access needed?
- None. You download the Doc yourself; no add-on or permission.
How it works
- 1Download the Doc. In Google Docs: File, then Download, then Microsoft Word (.docx). PDF and plain text work too.
- 2Import it here. Drop the file on the box. It is read in your browser; no Google permissions are requested.
- 3Check one section at a time. 300 words a check with no account, 1,500 with a free one. Use the Doc's outline to split it.
- 4Keep the version history. Whatever the score, your Doc's version history is the strongest record of how you wrote it.
Does Google Docs have an AI detector?
No. As of October 2026, Google Docs has no built-in feature that scores text for AI writing. Gemini in Docs can help write and summarize ("Help me write"), but nothing in Docs tells you whether text reads as machine-written. What you will find are third-party add-ons and Chrome extensions that ask for access to your Docs. The alternative used on this page needs no access at all: you download a copy of the Doc and check the file, so no tool ever gets permission to read your Drive.
Three ways to get a Doc into the detector
The best is File, Download, Microsoft Word (.docx). It keeps paragraphs exactly, and comments are not imported. PDF also works; the importer re-joins the lines that a PDF wraps at the page edge and removes page numbers, but repeated headers come through. Plain text (.txt) is the simplest and loses all formatting, which does not matter for a score. Skip the "Web page (.html, zipped)" option, which produces a zip file. Or just select all, copy and paste; that works for short Docs but can bring list markers and stray characters with it.
Suggestions and comments
If the Doc has open suggestions from Suggesting mode, a .docx download can carry them as tracked changes, and the importer reads tracked changes as accepted: suggested insertions kept, suggested deletions dropped. So either accept or reject suggestions before you download, or know that you are scoring the "everything accepted" version. Comments are never imported. Resolved comment threads and the discussion in the margin stay in Google Docs, which is what you want for a score of the writing itself.
Version history is your best evidence
Google Docs records your document as it grows: File, then Version history, then See version history shows it hour by hour, and you can name important versions. Teachers increasingly look at it, sometimes through extensions such as Draftback that replay a Doc keystroke by keystroke. That history works in both directions. A Doc that grew sentence by sentence over a week is strong evidence of your own work, while a long passage that arrives in a single edit looks like a paste. If you wrote it yourself, keep writing in the same Doc rather than starting fresh copies, and do not delete the history.
If you used Gemini in Docs
Text written with "Help me write" or any other AI assistant in Docs is AI-generated text, and detectors may flag it like any other. Whether that is a problem depends entirely on your course or employer. Many allow AI assistance with disclosure. If you used it, say so where your policy asks you to, and treat the detector as a way to see which passages still read as the assistant's rather than yours, so you can rework them in your own voice.
Checking a shared Doc you do not own
If you are a teacher or editor with view or comment access, you can usually download the Doc yourself. Owners can turn off downloading, printing and copying for viewers and commenters in the sharing settings, and if they have, the Download option will be missing and copy will be blocked too; ask the owner for a copy. For a long Doc, open the outline (the Document tabs and outline panel) and check it section by section. Remember that a score is a prompt to look closer, not a finding, and that version history will tell you more than any number.
Who it's for
| File, then Download as | What comes through | Use it for |
|---|---|---|
| Microsoft Word (.docx) | Paragraphs exactly; suggestions can arrive as tracked changes; comments stay behind | Almost every check (recommended) |
| PDF document (.pdf) | All text; wrapped lines re-joined, page numbers removed, headers repeat | When you want to check the exact version you will submit |
| OpenDocument (.odt) | Paragraphs; notes and comments left out | If you work in LibreOffice |
| Plain text (.txt) | Words only, no formatting | The simplest option for a score |
| Web page (.html, zipped) | A zip file, which is not imported | Not for this |
Frequently asked questions
Does Google Docs have an AI detector?
No. Google Docs has no built-in AI-writing detector. Gemini in Docs helps you write, but it does not score text. Use an add-on or download the Doc and check the file with a separate detector.
How do I check a Google Doc for AI?
In Docs choose File, Download, Microsoft Word (.docx), then import that file here and run the detector. Nothing connects to your Google account.
Can teachers see if you copied and pasted in Google Docs?
Often, yes. Version history shows how a Doc changed over time, and replay extensions such as Draftback show a large paste arriving all at once. It does not show where pasted text came from.
Do I need to install an add-on?
No. You download the Doc and import the file in your browser. No extension, add-on or Google permission is needed.
Are suggestions and comments included in the check?
Comments are not. Suggestions in a .docx download can arrive as tracked changes, which are read as accepted. Accept or reject them first to check the version you mean.
Is it free?
Yes. The detector never spends words: 300 words a check with no account and 1,500 with a free one.
Does downloading as PDF instead of Word change the score?
Not the writing, so not meaningfully. A PDF adds repeated headers and page breaks; delete any headers that come through so they are not scored with your prose.