Great idea overall! However, I think it makes more sense to add extension popup functionality, which will reveal headers list on click, rather than having constant sidebar on the left. Also, it doesn't adapt to browser theme and oftenly picks wrong headers (for example, page footer's buttons).

At first the addon didn't work for me.
I got this error message :
"missing host permission for the tab"
When I restarted Firefox (go to about:profiles), a nice overview of the page structure appears in the sidebar
I think I'll find this a really useful add-on.
>> Oh Yess ! It is REALLY useful. Can I give it 6 stars please !
Thank you Damien for your work.

Unusable in dark theme (official firefox ones), since text color matches so much with background color. Should have default theme sets for this extension, or even better, allow user configuration for colors of elements or css customization.

Thank you Damien. Please consider applying Firefox Dark Theme: https://gitlab.com/DamienCassou/overview/-/issues/3.

Love it!
I'm a user of Headings Map extension which is not compatible with Firefox anymore and I was looking to fill this void.
I would recommend to add 2 features:
* allow to copy anchor link (e.g. link to the id attribute if present)
* add shortcut to toggle visibility

As an SEO, I would like the level of heading to be displayed. For example the text "xyz" in tag could be displayed like this : "1 - xyz". Also I wish the actual heading could be highlighted when I click on it in the extension interface.

Having an outline of long documents like specifications or manuals is certainly very useful. It is also a valuable tool to a web developer to see your heading structure.

It doesn't support the html5 section algorithm (yet?!), but the dev is very helpful, responds fast and seems to be interested in improving the extension further.