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YouTubeHeartbeat vs Timestamp Bookmark Extensions
Timestamp bookmark extensions such as Timi, YouMark, YT Bookmarker and Timemark save private notes at a time in a YouTube video inside your browser; Heartbeat's extension saves a public moment with its own h.ki page that others can find, follow and collect. Bookmarkers win for private study notes, Heartbeat for sharing and collecting.
Heartbeat's Chrome extension and the many YouTube timestamp bookmark extensions start the same way, with one key or click that remembers a second of a video, but they keep it in different places: a bookmarker usually keeps your timestamps and notes for you alone, in your browser or account, while Heartbeat saves each one as a public moment on h.ki, with its own page that other people can open, favorite and copy. In his Nov 12, 2023 video George Vanous shows the Heartbeat side: on any YouTube video, "just press the H key that's it", and the moment is saved to your heartbeat. That difference, private notebook or public collection, decides which kind suits you.
Quick facts
| Heartbeat | Press H on YouTube; the moment is saved to your heartbeat on h.ki |
| Bookmarkers compared | Timi, YouMark, YT Bookmarker, Timemark, YouTube Diary |
| Who sees your timestamps | Heartbeat: anyone, by default. Bookmarkers: you, as their listings describe them |
| Account | Heartbeat: Google sign-in. Bookmarkers: varies |
| Works outside Chrome | Heartbeat's moments are web pages anyone can open; the extensions need Chrome |
| Compared | Nov 7, 2026, from the Chrome Web Store listings and h.ki |
How each one works
Heartbeat. Install the Heartbeat Extension, pin its Heart, and press H while any YouTube video plays. In the Aug 18, 2023 launch video George presses H twice and has two moments to jump between: "H creates a new heartbeat moment that's your hotkey while watching any YouTube video at any time". Each moment gets a title, can be nudged to the exact frame, and appears on h.ki at an address of its own (How to Make a Moment, Link to an Exact Moment). Without the extension, the same can be done on h.ki itself (Open a YouTube Video on Heartbeat).
The bookmarkers, as their Chrome Web Store listings describe them (read Nov 7, 2026; Vi.ki did not install them):
| Extension | What its listing says it does |
|---|---|
| Timi | Ctrl + ; saves the current time of a YouTube video with a note |
| YouMark | Clips with timestamps, tags and notes, exported as CSV or Excel |
| YT Bookmarker | Notes on timestamps, editable |
| Timemark | One-click bookmarks on YouTube and Vimeo |
| YouTube Diary | Notes and bookmarks for YouTube videos |
Side by side
| Heartbeat | Typical bookmark extension | |
|---|---|---|
| Saves | A moment: start time, optional end, title | A timestamp, usually with a note |
| Where it lives | A public page at h.ki/<id> |
Your browser or the extension's account |
| Share it | A link anyone can open, with Share to X, Facebook, Email | Export or copy, where offered |
| Others' timestamps | The video's Community list, plus chapters imported from comments | Your own only |
| Collect | Favorites, playlists, vikis, a profile, h.ki/as/<handle> |
Lists inside the extension |
| Follow people | Yes (Profiles) | No |
| Private notes | No private mode visible signed out | The main purpose |
| Export | Copy as YouTube Chapters, Copy as viki | CSV, Excel or text, depending on the extension |
| Other sites | YouTube (and YouTube Music) | Some cover Vimeo too |
| Creators paid | h.ki/about says Heartbeat pays creators for quality content (Quality Content and Payments) | No |
What the public side adds
Heartbeat's moments are public on purpose. In the Dec 25, 2023 features video George describes "a social network where everybody can follow each other's heartbeat", and "the whole goal of heartbeat is to connect strangers based on common interest" in video moments. So a moment you save also shows up in that video's Community list for the next viewer, and your profile becomes a collection others can follow. Heartbeat also reads timestamps that fans posted in a video's comments into the same list, which a private bookmarker never shows you.
What the bookmarkers do better
- Privacy. Study notes on a lecture, or the parts of a tutorial you keep losing, may be nobody else's business. Bookmark extensions keep them to you; Heartbeat's moments go on a public page (Privacy Policy).
- Notes, not titles. Several bookmarkers are built for writing a note at each second. A Heartbeat moment has a title and description, and longer writing goes in a viki.
- No public profile. A bookmarker needs no handle and no Google sign-in on another site.
- Export. YouMark's listing offers a spreadsheet export; Heartbeat's exports are chapter lines and viki text.
Our verdict
We think the choice is about audience, not features. For personal study (a course, a recipe, a game guide you are following) a private bookmark extension is the better tool, and Heartbeat would publish notes you did not mean to share. For anything you want to show, share or come back to with others (the best scenes of a show, a playlist of highlights across videos, the tracks of a long mix), Heartbeat does what no bookmarker does: each timestamp becomes a page with a link, and it joins a public collection that grows with everyone's moments. If both matter, use both: a bookmarker for notes, Heartbeat for the moments worth sharing.
Frequently asked questions
Is Heartbeat a YouTube bookmark extension?
Partly. Its extension saves a time in a YouTube video with one key, H, like a bookmarker, but each one becomes a public moment on h.ki rather than a private bookmark.
Can I keep my Heartbeat moments private?
Moments carry a visibility setting, but the choices are visible only when signed in, and the moments we saw were public. For private notes, a bookmark extension is the safer choice.
Which extension saves YouTube timestamps with notes?
Timi, YouMark and YT Bookmarker say in their Chrome Web Store listings that they save timestamps with notes.
Can I share a bookmark from a bookmark extension?
It depends on the extension; most are made for your own use. A Heartbeat moment is shared by its h.ki/<id> link, which anyone can open without the extension.
Does Heartbeat work on Vimeo?
No. Heartbeat works with YouTube videos, including YouTube Music.
Sources
- No video ads! - YouTube vs Heartbeat - h.ki, Freedom!, Nov 12, 2023 (video)
- Heartbeat Moments 1.0 is here - Free for you!, Freedom!, Aug 18, 2023 (video)
- Heartbeat features - No fluff, Freedom!, Dec 25, 2023 (video)
- Heartbeat extension on the Chrome Web Store, read Nov 7, 2026
- Timi, Chrome Web Store, read Nov 7, 2026
- YouMark, Chrome Web Store, read Nov 7, 2026
- YT Bookmarker, Chrome Web Store, read Nov 7, 2026
- Timemark, Chrome Web Store, read Nov 7, 2026
- YouTube Diary, Chrome Web Store, read Nov 7, 2026
- What is Heartbeat?, h.ki, read Nov 7, 2026
Moments
No video ads! - YouTube vs Heartbeat - h.ki
Freedom!
Heartbeat Moments 1.0 is here - Free for you!
Freedom!
Heartbeat features - No fluff
Freedom!
Related
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Heartbeat vs YouTube ClipsA Heartbeat moment is a saved start time in any YouTube video, made by anyone, with its own h.ki page, title and list; a YouTube Clip is a fixed 5 to 60 second loop made on YouTube, and chapters are the uploader's own. Clips win for a quick loop inside YouTube, moments for collecting, editing and finding highlights across videos.
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Privacy PolicyHeartbeat's privacy policy is the Freedom! Privacy Policy (last modified Feb 2, 2024), shared by Freedom! Family Limited's sites; it says Heartbeat collects only what it needs, does not sell data, signs you in with Google, reads profile, email and channel data through YouTube's API services, uses cookies, and is not for children under 13.
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Sign-in and AccountsHeartbeat accounts use Google sign-in only, with no password of Heartbeat's own; signed out you can watch moments, read vikis, search and play riddles, trivia and tools, while saving moments, favorites, follows, comments and Heartbeat Photos need an account.
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Heartbeat Fun and ToolsHeartbeat Fun (h.ki/fun/) holds Connect the dots, the Heartkeys typing race and Coin flip; Heartbeat Tools (h.ki/tool/) holds 19 small utilities, from a time zone planner and EMI loan calculator to microphone and speaker testers. Both are free in the browser.
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Heartbeat PhotosHeartbeat Photos (h.ki/photos/) is Heartbeat's photo gallery, where hovering a thumbnail shows the full image without a click. Upload by drag and drop, share a gallery by its link, and drive it with keys such as T, V, C, I, H, R, Q, G H and G V.
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Heartbeat VikisA viki (video wiki) on Heartbeat is a written page whose timestamps play YouTube moments in a docked player beside the text, with images. Anyone signed in can write one with Create, Write a viki; all are listed at h.ki/vikis.
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Riddles and TriviaHeartbeat's riddles (h.ki/riddles) and trivia (h.ki/trivia) are question cards you answer by typing, with hints that show the answer a letter at a time. Anyone signed in can publish their own; each question has its own page, h.ki/ri... or h.ki/tr....
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Heartbeat Public APIHeartbeat has no documented API, but the JSON calls its own pages make under h.ki/api answer without sign-in; seven were seen on Nov 7, 2026 (a moment, a playlist's or viki's moments, a video's community moments, suggestions, comments, tags and a heartbeat's playlists), each wrapped in {"code":0,"data":{"objList":[...]}}.
See also
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Heartbeat ExtensionThe Heartbeat extension for Chrome lets you press H on any YouTube video to save a moment to your heartbeat, shows a Heart button that lists your moments, and shows a channel's Channel ID on YouTube. It is free, published by Freedom! Family Limited.
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How to Make a MomentTo make a Heartbeat moment, press H while watching a YouTube video with the Heartbeat extension, or open the video on h.ki and click "+ Moment"; then give it a meaningful title and nudge the start time to the exact frame.
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Link to an Exact MomentTo link to an exact moment on Heartbeat, save it as a moment and share its address, h.ki/ followed by its nine-character id (such as h.ki/morxesfsh), which opens the video at that start time; for a quick link without saving, add ?t= to a video page.
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Open a YouTube Video on HeartbeatTo open a YouTube video on Heartbeat, replace "com" with "h.ki" in its address, so www.youtube.com/watch?v=ID becomes www.youtube.h.ki/watch?v=ID, which redirects to h.ki/yoID; typing h.ki/yo and the id does the same.
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ProfilesA Heartbeat profile, called a heartbeat, is at h.ki/@handle, with tabs for Home, Favorites, Videos, Moments, Vikis, Playlists, Photos, Galleries, Following and About; heartbeat.me/@handle leads to it, and h.ki/as/handle shows Heartbeat with only that person's content.
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Quality Content and PaymentsHeartbeat says it pays creators monthly, by the 18th for the previous month, for quality content even if it gets no views, and more for views and watch time. Quality means meaningful titles, accurate start times and content you enjoy; bots are banned, AI help is allowed if you edit it.