| What it does | Chrome extension to bulk-add sources to NotebookLM from JSON exports, YouTube, and web pages
| Browser-based YouTube ad blocker with background play, no installation required
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| Stage | Not given
| Startup
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| Founded | Not given
| 2025
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| Based in | ES
| Not given
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| Pricing model | Paid
| Free
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| Pricing | Free plan: 5 bulk actions per month, single sources always free. Pro licence: $29 one time, unlimited bulk runs.
| Completely free with no registration, no subscription, and no hidden charges.
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| Key features | - Split JSON exports into Markdown files with 400,000-word budget
- Filter sources, detect duplicates, and batch delete
- Incremental uploads skip already-added content
- No account or login required
- Source-available code published unminified
- No data written to disk or stored on servers
- Supports Telegram Desktop and Telegram for macOS exports
| - Ad blocking for all YouTube ads including pre-roll, mid-roll, and overlay ads
- Background audio playback on iOS and Android
- Playlist support with full ad-free playback
- Video downloading in high quality
- Dark mode and light mode themes
- Support for 8K and 4K video quality
- DJ Mode for mixing and crossfading two YouTube videos
- Sleep timer to automatically pause videos after a preset duration
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| What makes it different | - No backend or recurring costs: pay once, keep the licence forever
- Runs entirely in your browser with no account or login needed
- Smart splitting keeps records whole and avoids duplicates on re-runs
- Source-available and unminified so you can audit the code yourself
- Extends NotebookLM's interface with bulk operations and source management tools
| - Works on all devices without installation or account creation, including iPhones and devices where browser extensions cannot be installed
- Uses YouTube's official embed player, making it impossible for YouTube to detect or block unlike browser extensions
- Completely free with no hidden charges, funded by community support and ethical partnerships rather than user data
- All viewing history stored locally in browser with zero server-side access or data collection
- Simpler alternative to Vanced and ReVanced that requires no APK, patching, or technical setup
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 15 ▼ −1 (down) since last check | 23 ● no change since last check |
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| Trust Flow (Majestic) | 18 | 6 |
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| Citation Flow (Majestic) | 15 | 22 |
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| Referring domains (Majestic) | 24 | 123 |
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source-lm
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