Did exactly what I hoped, thanks!

It wasn't explicitly noted that the regex version does show the proposed changes and then lets you explicitly enable/disable each one, which is exactly what I had hoped for!

All my reddit bookmarks are now explicitly old.reddit.

Found all functionality that I expected, except the ability to edit folders.

Easy to use. Does what promises.

I just tried the regex replacer and it works beautifully. Very useful tool.

Great! Uses a lot of system resources when having tens of thousands of bookmarks, but works absolutely perfect!
You save my life!

Very helpful. Many thanks to the dev :-)

Nice. Nice. Quickly became one of my most used extensions as I have multiple profiles synced across multiple Mozilla browsers (Firefox Nightly, Waterfox, etc.). Slowly approaching my ultimate bookmarks collection this way. (of course in no small part, facilitated with the convenience of your extension; your hard work!)

**My favorite benefit** :
Having development servers setup on my LAN, some of my BM titles represent stuff like 10.0.0.38 (or, whatever it might be). I've since switched to using named hosts, as my ISP service goes out frequently and the router assigned new IP addresses. Lesson learned, but a lot of my BM's (bookmarks, not the other bm) represented <-- past-tense, those IP's, in the title as well. So 10.0.0.38 easily becomes DevServerOne in both title and URL in one fell swoop.

Awesome!

Disclaimer: I may be crazy, but occasionally, I have a bright idea.
:)

This extension does its job as advertised, thank you for saving my hassle to replace hundreds of invalid urls to the working urls.

used it to change about 1000 http bookmarks to https.
It didn't change the 'add time' or the 'last visit' date.
BUT it did erase all the TAGS for the changed bookmarks.

Good work on this extension,but as I use tags a lot, I am gonna reload the saved bookmarks.

EDIT: Thank you MrOtherGuy for the reply.
I read the bugtrack and it makes sense. Guess I am back on manual changes or playing with JSON.

exactly what I needed. Used regex on my 17000 big DB, modifying 500 entries. Works OK.

What a life-saver!

I used it to replace a Nitter's instance by another one in 88 bookmarks, it is fast and reliable. Thank you!

Works for me, tried both RegExp and Domain Name modes. Just what I needed, thanks!

Worked as expected!

works really well so far.

As a suggestion, it would be nice if it stored used pattern somehow.