With this extension you can Draw and Highlight on any Website. It saves your drawings on your Browser privately and lets you modify the Pen, like changing the Opacity and Size, or Erase and Save as Image.

Marker: Draw and Highlight on Any Website
Marker is a Firefox extension designed for annotating the web. This free, open-source tool enables you to draw or highlight text on any website. Equipped with a pen, eraser and mouse mode, Marker auto-saves all your drawings privately in your browser. Hence, allowing you to revisit them each time you reopen the website. Ideal for online exams, UI/UX teamwork, and annotating long articles.
Add-on stats
Manifest V2
Weekly download count: 69
Firefox on Android: No
Permissions:
- storage
- activeTab
- contextMenus
Size: 645.20K
Email: *****@linux.com
URLs: Website
Full description: See detailed description
Ranking
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
User reviews
Pros
- Open source
- User friendly design, easy to use and looks good
- Customizable in scripts and colors
- Clean UI, easy to use
- Incredibly useful for marking pages
Cons
- Requires much CPU resources, may lag on outdated computers
- Does not highlight text, only allows drawing
- Issues on certain websites (e.g. Github) where original page becomes invisible
- Thinner pen size not available
- Needs a shortcut for activation instead of mouse click
Most mentioned
- Customizable colors and pen settings
- Request for text highlighting feature
- UI design and ease of use
- Performance issues on outdated systems
- Inconsistent functionality on some websites
User reviews
by 天灭中共退党团队保平安, 2025-02-13
Pros:
- Open souce
- Capable in any website, in my test
- User friendly design, easy to use and looks good
- Customizable in scripts and colors
Cons:
- Much resources needed, outdated computer may have lagging problem
by 水貂, 2024-12-06
very amazing feature! but may I suggest adding a short-cut for activating market instead of just mouse click on the icon? Thank you.
by S.HamedStriker, 2024-10-29
Add-on safety
Risk impact
Marker does not require any sensitive permissions.
Risk impact analysis details
- Low Request access to the following domains:
Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Marker. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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