This is truly a fabulous work. Thank you very much!

Pretty awesome. I just wish separators would show on the popup.

The addons works for the most part, but the reason I installed it was to use my bookmark searches for images and none of them work. The "%s" isn't replaced by the image URL, so I have to copy paste all my bookmarks into the addon :/

Excellent for reading or general browsing, the popup is perfect.

However, it's very annoying when editing. The extension needs: (A) a toolbar icon to quickly enable/disable the popup. (B) an option to disable the popup on selections inside inputs or textareas. (C) perhaps whitelists and blacklists of pages/domains where the popup will/won't be used.

Also, it's somewhat concerning that this is not open-source -- for more easily vetting the safety and for submitting pull-requests.

Excellent functionality, very useful - until it prevented the saving of bookmarks.
Disabling the extension restores normal bookmarking operation.
Linux, FF v64 and at least one version earlier.

Problem:
I bookmark a page, it's visible in the bookmarks list, but when restarting FF it's no longer there.
Also, after bookmarking one page on a tab and moving to the next (un-bookmarked) page on a different tab, that page shows as bookmarked: the star in the address bar is filled in blue - but this is bogus: clicking on it does nothing and neither does the menu entry "Bookmarks|Bookmark This Page".

Essentially I find the same problem as poster m4758406 (5 months ago at the time of this post).

A very poor workaround can be had by keeping an external list of sites, and then copy/pasting each URL one at a time. Bookmark one tab, close FF, restart (bookmark was saved) - then copy/paste bookmarking the next in the same way.

I'm not sure the developer is still actively supporting this and his other extensions: the last updates for them are showing as a year ago.
That's unfortunate. Aside from the bookmarking problem this extension was very useful.

its excellent

I found the culprit for the Icons not showing up on the pop up, it's the "Fanboy’s Enhanced Tracking List​​​​​​​​" filter from uBlock Origin. That is the only filter that blocks the icons,also it does this only on pages FETL is actively blocking something. It would be good if you could get it to work with it if it's possible.
Thank you for the addon, it's great and I use it all the time. I recommend it, deserves a donation button.

FETL github: https://github.com/ryanbr/fanboy-adblock

非常实用 ，感谢作者

it's nice, but in firefox, the icon, isn't show to up right bar with extensions

This addon is simple to use and to configure. Doesn't interfere with desktop (X11 CLIPBOARD) on Linux. Text is copied via PRIMARY instead which is used by mouse button 3.

"Selection Context Search" is the best replacement I found until now for the much better but outdated context-search addons from pre-Quantum era.

1.) addon is activated
2.) I make changes in the bookmarks
3.) restart firefox
4.) changed bookmarks lost, nothing was saved before
I disable the addon
everything works

Very good. This addon allows you to customize the context menu search using place holders. Thus even when the query term appears in the middle of the URL, it can handle it nicely.

The "i" button for information does not work relialbly (macOS). It needs to be corrected.