Everything you need to learn from video
ReplayGlows combines powerful note-taking with seamless video playback. Stop losing insights. Start building knowledge.
The ReplayGlows Chrome extension
Take control of the videos in your browser, too.
On YouTube, block the channels, Shorts and comments you never want to see, return to useful moments with timestamped notes, and sort playlists and subscriptions. On supported websites, choose a shared speed, pin a tab to its own pace and repeat a passage with an A–B loop. With a ReplayGlows account, turn a moment into a study card.
- Shared speed and pinned tabs
- Temporary A–B loops
- YouTube filters, notes and tools
- Study cards (account required)
Publication on the Chrome Web Store is in progress. Bookmarks and notes stay in your browser; study cards require a ReplayGlows account.
Timestamped Notes
Capture thoughts at the exact moment they happen. Click any note to jump back to that point in the video instantly.
Built for YouTube
Paste a YouTube link to watch it and take notes in the web app. The Chrome extension also controls speed on supported HTML5 video sites.
Organized Playlists
Group related videos into playlists. Perfect for online courses, research projects, or topic deep-dives.
Search Your Notes
Type a word on the Notes page to filter the notes from all your videos, then open the one you need at its moment.
Your Account Library
Notes saved to your ReplayGlows account are available in the web app wherever you sign in. Extension bookmark notes are saved locally in your browser.
Private to Your Account
Your notes are private to your ReplayGlows account. AI provider keys you add are stored encrypted on the server.
Mobile Friendly
Use Play controls on mobile web today. Native apps are the path toward stronger background playback and true watch-anywhere workflows.
Export Your Notes
The Chrome extension exports bookmarks and notes as Markdown or JSON. Note export in the web app is part of the Pro plan.
Learning Feeds
Group channels and playlists into a feed built around one topic, then open it as a single list of videos.
Read Transcripts
Open a video’s transcript in the web app when YouTube captions are available. Search it, and follow the line that matches playback.
YouTube Filters
In the Chrome extension, block channels, videos, keywords and comment authors, and hide Shorts, from every YouTube page.
Bulk Playlist Tools
In the Chrome extension, select several videos on a YouTube playlist to copy, move or remove them, or add them to Watch later.
English and French
The web app, the Chrome extension and this site are available in English and French.
Study cards
Study cards & spaced repetition
Turn a moment of any YouTube video into a question you can answer later. Review it on a spaced schedule and replay the passage it came from, as the step-by-step study card guide shows.
- Create a question and answer card at the current moment of any YouTube video in the web app.
- Each card is anchored to its passage, from about 20 seconds before the moment to 10 seconds after.
- Optional AI draft from the video transcript, using your own OpenRouter or Cerebras key. Pro plan only.
- Due cards come back with spaced repetition. Reveal the answer, replay the exact passage, then grade it Again, Hard, Good or Easy.
- The next review date adapts to your grade, and missed cards come back in the same session.
- In the Chrome extension, use the Card button under a YouTube player to create a card at the current moment. Review your cards in the web app.
Study card limits
Free $0
50 cards in total, 10 per video. No AI drafts.
Pro $8/month or $72/year
2,000 cards in total, 100 per video, plus AI drafts.
Chrome extension
Block channels, Shorts and comments on YouTube
Block a channel, a video or a word from YouTube’s ⋮ menu, and it disappears from home, search, suggestions and comments. Hide Shorts, mixes and videos you have already watched. No account needed; your lists stay in your browser.
YouTube subscriptions
Unsubscribe from channels in bulk
Select every channel or only the ones you no longer watch, confirm, and ReplayGlows unsubscribes for you. Empty everything at once in the Chrome extension, or sort a few channels a day in the web app.
How It Works
Three simple steps to better video learning
Paste a YouTube URL
Drop a YouTube link into ReplayGlows.
Take Notes as You Watch
Click to add notes. Each one is linked to that moment in the video.
Review & Learn
Click any note to jump back. Search the notes you saved across your videos.
See how this workflow fits students reviewing lectures, educators curating class videos and researchers keeping up with a topic. Still choosing between tools? Compare YouTube and ReplayGlows for learning.
Everywhere you learn
One account. Every screen.
Web, browser, desktop and mobile share the same library. Start a note on one surface and pick it up on the next.
Web app
Your full library in the browser: videos, playlists, focused feeds, timestamped notes and study cards, on any device where you sign in.
Chrome extension
Publication on the Chrome Web Store in progress. Shared playback speed, A–B loops, YouTube bookmarks and notes, and a Card button to save a moment to your account.
Native apps
Desktop and mobile apps built for background playback and watching anywhere. Your queue follows you off the browser.
Cloud sync
Notes and study cards saved to your account are ready wherever you open ReplayGlows next. Extension bookmarks stay in your browser.
Ready to transform how you learn?
Start with the free plan, then go Pro when you need more.
Start Free TodayFollow what ships
New features, guides and plan updates are published on the ReplayGlows blog first. Follow it in your RSS reader, or write to us with a question or a feature request.