What? Yet another list of ‘firefox extensions you just can’t possibly live without’? Well… yes. This list is the cream of the crop extensions you will certainly find use for if you operate a website.

If you are a firefox guru, you probably already have at least a couple of them, but maybe even you can still find something here you havn’t tried. The list of 10 Firefox Extensions For Website Owners, includes everything from tools to help you fix those pesky CSS issues to monitoring SERP rankings. If you don’t have them, I recommend you get them.

So, here they are, from 10 to 1.

10. ServerSwitcher – If you operate a site with both a dev and production mode, this extension is handy for switching easily between the 2 views for comparison or merely to switch to your dev server. If you operate a small site or hosted site, maybe you don’t have much need for this, but it is certainly handy to have if you do need it.

9. LinkChecker – If you run a dynamic site, or built a site from scratch, its very possible you have some dead links after moving things around. This simple extension lets you know if your links on a page are good or bad without having to click around. There are some other better tools out there for checking your entire site for dead links (search for xenu link sleuth), but this allows you to see them at quick glance.

8. FasterFox – A given. Speeds up your firefox browsing by a variety of tweaks, from increasing the number of parallel downloads to DNS caching. This doesn’t really have anything to do with development, however it is really a must for Firefox.

7. ColorZilla – Used for getting colors from images and converting from RGB. It beats the pants off of taking a screenshot, opening photoshop, and using eyedropper there (or if html just using firebug).

6. liveHTTPHeaders – Quite useful for looking at other sites (and your own) and viewing what HTTP headers are being passed around. Allows you to view POST information and cookies. WebDeveloper (below) has the ability to do most of this, but I personally am not a fan of the realestate that webdeveloper takes up (extra toolbar), and like liveHTTPHeaders combined with firebug.

5. WebDeveloper – Allows you to disable CSS styles at the click of a button, find broken images, view your site at various resolutions (so you can still design for those poor souls on 1024×768, or 800×600). An extra toolbar, which I am not a fan of, but it does have some quite good features.