Active recall, from YouTube —
not from a blank page.
Rewatching feels like studying. It isn't. ClipMark saves the moments that mattered, then brings them back with your note hidden and asks you to answer first — so the video becomes a question instead of a replay.
Why rewatching quietly fails
Replaying a lecture is recognition, not retrieval. Everything looks familiar as it goes past, which feels like understanding right up until you have to produce the answer without the video playing. Active recall flips the order: you attempt the answer first, and only then check it. The attempt is the part that does the work — and it's the part that watching a video a second time skips entirely.
The problem has never been that people don't know this. It's that setting up retrieval practice for video is tedious: pause, transcribe the point into some other app, invent a question, keep a link back to the timestamp so you can check yourself. Most people do it for one lecture and quietly stop. ClipMark exists to collapse that whole chain into one keystroke while you watch.
How a recall session actually runs
- 01
Save the moment with Alt+B
No dialog, no interruption — the timestamp is captured while the video keeps playing. Add a note in the side panel when you're ready, or let ClipMark draft one from the transcript around that second using Chrome's on-device AI.
- 02
The moment gets a review schedule
Enrolled clips come back after 1 day, then 3, then 7. Answer Got it and the next interval doubles, up to 60 days. Answer Again and it returns tomorrow.
- 03
You answer before you watch
When a clip is due, ClipMark shows the timestamp and its tags but hides your note. You recall what the moment was about, reveal to check yourself, and replay the exact second if you were wrong.
Quiz yourself on a video without leaving it
Everything happens beside the player, in Chrome's own side panel. Nothing floats over the video, the controls stay reachable, and YouTube's keyboard shortcuts keep working — ClipMark takes Alt+B for saving and, only while a revisit session is running, [ and ] to step between your saved moments. You can run a full recall pass over a three-hour lecture without ever opening another tab.
Retrieval before reveal
The note is hidden by default. You produce the answer, then check it — the order that makes the difference.
The clip is the answer key
Got it wrong? One click replays the exact second the note came from, in context, at full quality.
Tags you already type
Any #word in a note becomes a tag, so a whole subject can be reviewed as one set later.
Remember what you watch — on the free tier
Bookmarks are unlimited and stored locally on Free, and the free tier carries a real Active Recall allowance: 25 enrolled cards standing at any time and 30 reviews a month. That is enough to run genuine retrieval practice over a full course, not a teaser. Pro lifts both to unlimited and adds cloud sync across devices, scheduled review reminders, and unlimited Anki export — the exact split is on the pricing page.
Where the AI does and doesn't help
ClipMark can draft the note for you from the transcript around a timestamp, which removes the typing but not the thinking — you still have to recall it later. That drafting runs on Chrome's built-in on-device model (Gemini Nano), so transcripts aren't sent anywhere for it; availability depends on your Chrome version and Google's support for the API. Everything above works without it.
Four things we refuse to get wrong.
The player stays clear, the free tier stays honest, the permissions stay narrow, and the thing that makes it stick is built in.
Lives in the side panel, not on top of your video
ClipMark opens in Chrome’s own side panel beside the player. Nothing floats over the video, nothing covers the controls, and YouTube’s keyboard shortcuts keep working — ClipMark only claims Alt+B to save, and [ / ] to step between clips while you’re actively revisiting.
A free tier with the numbers printed on it
Free means unlimited bookmarks stored locally, on-device AI notes, 25 Active Recall cards, 30 reviews a month, and 10 Anki exports a month — no card, no trial clock. Those are the real limits, listed on the pricing page rather than discovered after you install.
Two hosts. That’s the whole permission list
ClipMark asks for youtube.com and clipmark.mithahara.com — its own sync domain — and nothing more. It cannot read your banking tab, your email, or any other site, because it was never granted them. AI notes run on Chrome’s on-device model, so transcripts aren’t shipped anywhere for that.
Your note is the question. The clip is the answer.
Tools that quiz you on a video generate the questions themselves, from the transcript. ClipMark does the opposite: it hides the note you wrote and replays the exact second, so you check your own recall against the source. Every saved moment goes on a schedule — 1, 3, then 7 days, doubling up to 60. That retrieval loop is the product, not a bullet point.
Switching from an extension that stopped getting updates? Read the migration guide.
Keep reading
Stop replaying. Start recalling.
Install ClipMark, save the next moment that matters with Alt+B, and let it come back and ask you about it.
Add ClipMark to Chrome — FreeFree tier needs no card. Works in Chrome, Edge, and Brave.