Simple and mostly works. On pages that it works on, the add-on works as described. I will be looking for a new add-on as this is missing many features I would expect. There is not indication that a mark is placed, There is no indication as to the order of Scrollmarks. When you return to a page there is not indication that Scrollmarks have been added to the page.

Conclusion, the add-on works but there are much better
options.

Does exactly what I want: save a particular position on a long webpage and even lets me name it. And is very simple to use. Couldn't ask for more.

Excellent add-on. Works like it says!

Unfortunately doesn't work with PDFs, but works well with other websites!

4 Stars for the great idea!

Missing two very important features that are preventing me from using it:

1. Having a badge to let me know if the current page has a bookmark, like telling me the number of bookmarks on the current page.

2. On pages that have a bookmark on a location that is still not loaded, that require scrolling to bottom in order to load the rest of the page (like YT for example): have some kind of an indication from the extension to tell me that I still did not reach the actual bookmark location.

Finally, the extension does not say how it links bookmarks to pages; does it use the domain only? does it use the full URL (including tracking data in the URL)?

Thank you claudiabdm! It's works 100% for me. X/Twitter was driving me insane. Thanks again!

Hi ! :)
its a good job!
is it possible to attach marks to the left sidebar? Or attach marks to scrollbar with its names?
that would be awesome! and 5 stars.^)

UPD:
Perhaps you could add to the settings an option to choose where to display it -- in the sidebar or on the scroll bars.