By: Rumoroso
The extension generates a document-map or index of any web document structured with headings and/or with sections in HTML 5. It shows the headings structure, the errors in the structure (ie. incorrect levels), and it works as HTML5 Outliner too.
Features & Capabilities
User Growth & Download Statistics
- By:
- Rumoroso
- Daily users:
- 6,349 28
- Rating:
- 4.72 (58)
- Version:
- 4.10.7 Last updated: 2026-04-08
- Version code:
- 6213290
- Creation date:
- 2008-05-05
- Risk:
- High risk impact Moderate risk likelihood
- Permissions:
- <all_urls>
- activeTab
- storage
- webNavigation
- <all_urls>
- Content scripts matches:
- <all_urls>
- <all_urls>
- Size:
- 613.62KB
- Email:
- ru*****@gmail.com
- URLs:
- Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-19
- Compare stats and ranking:
- HeadingsMap vs Outline Headings
- HeadingsMap vs Headings, Landmarks & Links
- HeadingsMap vs Outline Sidebar
Ranking
For Developers
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Permission Change History
2024-01-22: Version 4.7.8 → 4.7.9
Remove Permissions: tabs
2023-04-02: Version 4.2.2 → 4.2.3
Add Permissions: tabs
User Reviews
Pros
- Effectively distills the page structure into an easy-to-read heading outline.
- Displays the entire tree of headings, making structure quick to read and verify.
- Does exactly what users need and is quick to use with one-click access.
- Integrated in the document view rather than the browser sidebar, for convenient access.
- Helpful for building pages and checking whether headings are correctly set, with a visual red-outline cue when a heading is accessed.
Cons
- Font size is not configurable and sizing is inconsistent across sites (too big on some pages, too small on others).
- Conflict with Vimium's search/keyboard shortcuts, causing the page to close or behave oddly.
- Layout issues: page width not adjusted on load, so text starts at the sidebar.
- Scrolling/outlining bug when header elements have fixed positions can cause the outline to scroll too far.
Recent reviews
by 斜倚*****, 2026-01-24
by Se*****, 2025-11-16
I like very much this extension. The only annoyance is the font size is too big. Is there a way to change it (and only for HeadingsMap, I don't want to resize the font at the whole Firefox level)?
by Jo*****, 2025-05-31
Is HeadingsMap Safe?
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.
HeadingsMap requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.
HeadingsMap is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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