Unfox AI: Free AI Detector & Humanizer with Google Docs Replay

Detect AI text, humanize writing, and replay Google Docs revisions. Free detection quota; Humanizer uses account points.

Unfox AI helps you check what you read and improve what you write. Detect AI text as you browse supported social feeds, humanize your wording, and replay available Google Docs revisions—all with a movable floating workspace. WHY INSTALL UNFOX AI? • See AI detection labels beside supported posts, articles and comments as you browse. • Check selected text or webpage content without copying it into another tab. • Understand results with AI, suspected AI and human scores, plus sentence-level highlights in the detector. • Rewrite text for a more natural tone with Humanizer. • Explore how a Google Docs document developed, including accessible edits made before installation. • Revisit your 20 most recent manual detection reports on your device. AUTOMATIC AI DETECTION WHILE YOU BROWSE Read your feed with more context. While you are signed in, Unfox AI checks supported text as it becomes visible and places compact detection labels alongside it. Click a result label to see its score details without leaving the page. Automatic detection supports these websites and content types: • Social feeds and discussions: X / Twitter, LinkedIn, Facebook, Reddit. • Articles and publishing: Zhihu, and Toutiao. • Reviews and video-page text: supported YouTube text. • Other supported article, review and email pages can be enabled from the extension settings; Gmail and Outlook require manual enablement. Content support varies by website. LinkedIn, Reddit, Substack, Zhihu and Toutiao include supported comments or replies. WeChat, Sohu and Baijiahao support article bodies only. Zhihu list summaries are checked after you expand the full text. Custom Medium and Substack domains are not supported. The supported social and article sites shown in the extension settings are enabled by default. Turn automatic detection off globally or for individual sites at any time. Set a per-page limit to control how much is checked. Text outside the supported length range gets a length notice instead of a detection request. Website layouts can change, and some content may not be recognized. CHECK TEXT ON YOUR TERMS Select a passage and use the right-click menu, capture the main content of a webpage, or paste your own text. Review and edit it before starting a manual AI check. See an overall result, AI / suspected AI / human scores, and sentence-level highlights. Captured text preserves paragraph breaks and supported emoji. Copy a result summary or export a PNG report for your records. HUMANIZER: REFINE YOUR WRITING Rewrite text for a more natural tone while aiming to preserve its meaning. Start with selected text, page content or a pasted draft, and watch the rewrite appear as it is generated. Review the result, copy it, or send it to the detector for another check. In Google Docs, apply a completed rewrite to the original selection after the extension verifies that the selection still matches. Humanizer runs only when you request it. GOOGLE DOCS: REPLAY THE WRITING PROCESS Explore available saved revisions in a dedicated replay report. Accessible edits from before you installed Unfox AI may also be included—no manual recording is required. Move through the timeline, adjust playback speed, skip long pauses, search changes and inspect edit details. Available editor labels and activity information help you follow how the draft developed. Replay depends on the history Google Docs makes available. Some revisions may be missing or unsupported; the report identifies gaps. Revision history does not prove authorship. A WORKSPACE THAT MOVES WITH YOU Open Unfox AI from the extension icon or right-click menu. Move the floating window, minimize it while you work, and restore it with your text and results intact. On Google Docs editing pages, the workspace opens automatically. Opening it does not start AI detection, rewrite your text or load revision history. Your 20 most recent manual detection reports are saved locally. Reopen results, delete individual reports or clear your local history. Automatic scans do not populate this local report list. GET STARTED 1. Install Unfox AI and sign in with your Unfox AI account. 2. Visit a supported website to see automatic detection labels on eligible visible text. 3. Open the floating workspace to adjust website switches and scan limits, or check text manually. 4. Choose Humanizer to rewrite a passage, or open Replay in Google Docs to explore available revisions. ACCOUNTS, LIMITS AND DATA Sign-in is required for detection. Manual plugin checks and automatic website checks have separate account usage limits. Available quota depends on your plan and is shown in the extension. Humanizer uses your website account points or eligible unlimited allowance, separately from detection quotas. Text is sent to Unfox when you start a manual check or Humanizer, and automatically when signed in and viewing eligible text on a supported site with automatic detection enabled. Enabling email checks also sends the visible message text for analysis. Accepted detection input and results are retained on the server for 90 days. Humanizer input and output are retained in your account's rewrite records. Your local manual history and reconstructed Google Docs replay data remain on your device; clearing local history does not delete server records. The extension does not collect browsing history or read your cookies. Website access lets Unfox AI display floating tools, capture text on request, and show automatic results on supported sites. Granting access to all websites does not enable automatic scanning on unsupported websites. You can change site access in Chrome and control automatic scanning in the extension. AI detection results are estimates and can be wrong. Use them to support human review, not as the sole basis for judging authorship or making consequential decisions.