Stamper Pro is a premium, floating Chrome Extension designed for content creators, students, and avid livestream watchers. It allows you to instantly capture timestamps from any playing video (like YouTube or local browser files), fine-tune them, add notes, and copy perfectly formatted lists for comment sections.
- 🪟 Floating Glassmorphism UI: A sleek, draggable overlay that lives directly on the webpage. No more switching tabs or losing popups.
- 💾 Smart Auto-Save (Persistence): Automatically saves your timestamps to Chrome's local storage. If you refresh the page or come back tomorrow, your list for that specific video will still be there!
- 🔄 YouTube SPA Support: Seamlessly handles YouTube's dynamic page loading. Click a new video on YouTube, and Stamper Pro automatically loads a fresh list while keeping your old list safely saved.
- 🎯 Precision Fine-tuning: Missed the exact moment? Use the
-2sand+2sbuttons to adjust your timestamps perfectly. - ⏭️ Jump-to-Time: Click any generated timestamp in your list to instantly seek the video to that exact moment.
- ⌨️ Smart Input Handling: Safely type your notes without accidentally triggering YouTube hotkeys (like the spacebar pausing your video).
- 📋 One-Click Copy: Copies your entire list in a clean
MM:SS - Noteformat, ready to be pasted into the YouTube comments box. - 📱 Touch & Mobile Friendly: Fully responsive design that shrinks on smaller screens and supports touch-dragging for mobile browsers.
Because this extension is not yet published on the Chrome Web Store, you can install it locally in a few quick steps:
- Download or Clone this repository to your local machine and extract it to a folder.
- Open Google Chrome and navigate to
chrome://extensions/. - Toggle on Developer mode in the top right corner.
- Click the Load unpacked button in the top left.
- Select the folder containing this extension's files.
- Pin the extension to your Chrome toolbar for easy access!
- Open any webpage with a video (e.g., YouTube) or drag an
.mp4file into a Chrome tab. - Click the Stamper Pro extension icon in your toolbar.
- A floating window will appear. You can drag it anywhere on the screen by clicking and holding the top title bar.
- Click + Capture Timestamp to log the current video time.
- Add an optional note in the text box.
- Click 📋 Copy for Comments and paste it wherever you need!
- Tip: Use the Clear button in the top left to wipe the list for the current video.
manifest.json- The configuration file required by Chrome (v3).background.js- Runs silently, listening for the extension icon click to inject the UI.content.js- Contains the UI rendering, drag logic, storage management, and video interaction logic.icon.png- The custom icon for the extension.index.html- A fully coded, dark-mode landing page you can host to easily share the extension with friends!
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.