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MauroPello/stop-the-slop: Spot AI-generated YouTube scripts

Mauro Pello released Stop the Slop, an open-source browser extension that analyzes YouTube video transcripts to flag AI-generated scripts and robotic narration, displaying AI probability ratings on thumbnails and in-player controls. Available for Chrome, Brave, Edge, and Firefox, the extension uses a Cloudflare Worker API and local caching, with zero personal data tracking, and is licensed under the MIT License.

read2 min views5 publishedSep 4, 2026
MauroPello/stop-the-slop: Spot AI-generated YouTube scripts
Image: Michielbdejong (auto-discovered)

AI Script Detector for YouTube: An open-source browser extension that analyzes YouTube video transcripts to flag AI-generated scripts and robotic narration.

Chrome Web Store:Install for Chrome, Brave and EdgeFirefox Add-ons:Install for Firefox** Project Website:https://mauropello.github.io/stop-the-slop/ Privacy Policy:**https://mauropello.github.io/stop-the-slop/privacy.html

Product Hunt:Stop the Slop on Product Hunt: Community launch discussion and feedback.AlternativeTo:Stop the Slop on AlternativeTo: Directory listing and open-source reviews.SourceForge:Stop the Slop on SourceForge: Open-source mirror.** Peerlist:Stop the Slop on Peerlist: Project timeline and updates. DEV Community:**How I Built an Open-Source Browser Extension to Detect AI Slop on YouTube: Architecture writeup.

Thumbnail AI Badges: Displays AI probability ratings directly on video thumbnails across YouTube feeds before clicking.In-Player Controls Badge: Shows a native AI probability pill alongside the bottom-right video player controls (subtitles, settings, fullscreen) with an interactive verdict popover.In-Player Detection: Probability score gauge and sentence breakdown in the extension popup.Sentence Breakdown: Highlights specific sentences that triggered repetitive phrasing or AI markers.Local & Edge Caching: Caches evaluated videos to deliver fast verdicts without redundant network requests.Privacy-First: Zero personal data tracking, no analytics cookies, and no account required.Adaptive Dark / Light Theme: Matches YouTube's theme automatically.

β”œβ”€β”€ docs/                 # GitHub Pages website and Privacy Policy
β”‚   β”œβ”€β”€ index.html        # Landing page with interactive demo
β”‚   β”œβ”€β”€ privacy.html      # Privacy policy
β”‚   β”œβ”€β”€ style.css         # Stylesheet and UI tokens
β”‚   β”œβ”€β”€ app.js            # Client-side scripts
β”‚   └── icons/            # App icons and assets
β”œβ”€β”€ extension-chrome/     # Chrome / Chromium (Manifest V3) extension
β”œβ”€β”€ extension-firefox/    # Mozilla Firefox (Manifest V3) extension
└── worker/               # Cloudflare Worker API
  • Clone this repository:
git clone https://github.com/MauroPello/stop-the-slop.git
  • Open chrome://extensions

in your browser. - Enable Developer mode(top-right toggle). - Click Load unpacked and select theextension-chrome

directory. - Open any YouTube video with captions to test.

  • Open about:debugging#/runtime/this-firefox

in Firefox. - Click Load Temporary Add-on.... - Select extension-firefox/manifest.json

.

See Privacy Policy for details on permissions (tabs

, storage

, scripting

, https://www.youtube.com/*

).

This project is licensed under the MIT License.

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