Very nice extension - just a couple things...

[tmillerman]

I've been hoping to find an extension like this for a long time. Thank you !!

A couple things:

1. The icon (green puzzle piece, maybe there is a better choice?) is so big! It makes my toolbar twice as tall to adjust for it, dwarfing the other add-on icons and taking up screen space unnecessarily.

But it least the addon does not need restart after enable or disable, so I just enable it to use, then disable it to get my screen space back.

2. Sort the list by the error code. Then I could see all this 404 together which are almost all bad links, Ignore most "(TypeError: NetworkError when attempting to fetch resource." which are almost all good, and learn about the other error codes by using the extension more.

[evilpie]

Thanks for your report.

1. I will look into using a proper icon for this. Currently I don't set any icon at all, so I am not sure why you would get a large one. I use the compact style in Firefox 57 and it's not larger than anything else.
2. Yeah, I've had some feedback about this before. Probably just splitting between 404 and everything else should be good enough?

[evilpie]

2. Is now implemented in version 1.3

[polyzen]

Another approach to sorting would be to separate the title and error type into two sortable columns.