Very good idea:
Seems useful to keep few tabs open!

Report: Broken on the 87 version, need to fix. Thanks!

Can you add ability to move bookmarks up/down?

simple and usable, but I also need a quick search (filtering) by bookmarks! Thank`s!

Indeed, a great concept, a new one, pertinent, helpful, well carried-out.

One click on the extension's toolbar button and you can save a website's given page. Back to the website the toolbar button's badge will indicate the number of saved bookmarks (saved with the extension) for that website.

This is really helpful. I have in mind blogs, video websites which include many pages. Up to now I'd bookmark pages within the website's bookmark folder I had created in Firefox's Library of course, and i'd have then to search/open those pages from Firefox's bookmarks... not any more.

This is a most welcomed extension.

EDIT : maybe one suggestion,

In-Site Bookmark's toolbar button drop-down menu includes the website's page title together with the page's url (truncated most of the time). Hovering the url displays the full url nevertheless.
Why not omit the url which takes vertical space and display it when hovering the page title only?

I've used Firefox for years on and off and I don't ever recall seeing a bookmarking extension such as this one. This is a very clever and unique idea I think. I haven't installed this yet because I am unsure of how it works and I don't want to mess up my collection of bookmarks saved to Firefox.

The idea of saving bookmarks "In-Site" is a pretty cool and clever idea. Very interesting for sure if it works the way I am thinking it does. -- What I'd like to know is:

(1) Are "In-Site" bookmarks still saved to Firefox and its Bookmark Manager like normal? OR...

(2) Are websites that we save bookmarks for taking the place of normal bookmark folders?

What I mean is... instead of having a normal folder named YouTube with ten different links to YouTube inside of it, do we now only see an entry in our bookmark manager for YouTube and when we go to the YouTube site, we see all the bookmarks we saved to it "In-Site" via a toolbar button or something?

So instead of folders and all the links inside of it, we now only see entries in the bookmark manager for each different website we visit?

Looking forward to hear from you, thanks.

EDIT: Okay, WOW! This is pretty darn cool and definitely a very unique bookmarking extension! Clever idea, fantastic job and again, pretty damn cool!

I installed this and wasn't quite sure how to begin so I checked the extension's options. I saw the text area and thought maybe I had to enter sites there and was "meh" about that idea so I closed the options. I went to addons.mozilla and opened up a bunch of extension pages and used your toolbar button to save them. Then I went to another site and clicked a bunch of links there and saved them. THEN, I opened up Firefox's native Bookmark Manager and looked for those bookmarks I saved and none of them were listed. I then navigated back to the addons.mozilla site and the other site and I saw a badge number showing I had bookmarks saved at that domain and was really impressed!

I hope you get a lot of recognition for this truly unique idea to bookmarking, it's absolutely phenomenal!

EDIT AGAIN: I guess I only have two requests to make at this point; the ability to edit the links from within the toolbar pop-out window, and the ability to backup the bookmarks and also export them for our own piece of mind and in case you ever stop working on this.