Specific! Rated 4 out of 5 stars

Salut!

1) There is no constant effect: font is replaced until page be reloaded.

2) There is no global effect. You replace font on one page of the site, and the other page of the same site has fonts you just tried to eliminate.

3) There is no universal effect at all. Once you try to wipe out Comic Sans from your life, you must replace it on each and every site you meet, each and every time you visit any page.

Conclusion: useful for designers to check layout or to analyse competitors. Not usable for convenient Firefox users.

Sorry for the confusion, End User, but Font Finder isn't meant to be a permanent on-page replacement tool. Its meant for debugging and tuning (much like the Developer Console & Firebug.)

If you're looking for a more permanent solution, maybe something powered by GreaseMonkey could serve your needs.

There are some issues Rated 3 out of 5 stars

My initial testing was too optimistic. There are some issues.

It's toolbar icon in the customization menu is broken(but not after being placed on the bars.) However, I wont risk keeping it there because buggy icons destroy custom setups.

It also is failing when tested on this very page. It is able to get the font in some sections- and in others it wrongly claims multiple element selections.

I like the extension- but it needs some work.

Shows wrong rendered font Rated 1 out of 5 stars

This extension is worse than useless because, although it shows the correct font stack, it can actually show the wrong rendered font.

For example, I have a stack that starts with Georgia, Times, etc... This extension claims that the font actually rendered is Times, but that's simply untrue; Georgia is available and is being rendered. Although they're fairly similar fonts, I know the difference between the two -- just zoom in on a lower-case "i" or "j" and it's obvious. (I used to teach typographic design.) Anyway, just to make sure I wasn't making a mistake, I checked it against a font book. I wasn't wrong; the extension was.

I don't know what the problem is with this extension. Might it be because I'm using an older version of Mac OSX? (Snow Leopard, 10.6.8.) Hard to believe that would matter... and if there's a compatibility issue, it should just refuse to work at all. Anyway, until they correct this bug, I advise people to avoid it because it could confuse you big-time.

By the way, they do seem to have fixed the entirely different problem I reported back in 2012, in my prior 1-star review. I thought I'd give this another chance now. Oh well.

This user has a previous review of this add-on.

Can you give an example?

Can you put up an example on http://jsfiddle.net/? That would be incredibly useful in helping us fix it. We detect the font based on replaying the CSS' stack and then stubbing a bunch of elements to find a matching height/width (that's why fixed-width fonts won't work.)

I've been playing with a new mechanism against more modern versions of FF, but a live example of an unhappy result would really help me vet the possible new solution.

Thanks Rated 5 out of 5 stars

All info packed in one. Exactly what I need

Love it Rated 5 out of 5 stars

I don't know where the idea came from but it is good. This addon helps a lot and we don't waste time in searching and comparing.

Rated 5 out of 5 stars

Useful and easy to use

Awesome Rated 5 out of 5 stars

There are different utilities where you need to enter specific information about a part of content (which has to be recognized) on an exact page. With this extension you can get the data separately or at a time. It's very useful.

Rated 5 out of 5 stars

From now on if I find some interesting font I'll know how to check it.

Helpful Rated 5 out of 5 stars

It's very useful in applying some font characteristics to another place. You can get what you look for, copy it and then use it as you wish.

Thanks Rated 5 out of 5 stars

Thanks to the developers. It comes in handy and saves time instead of searching and comparing.

Rated 5 out of 5 stars

I agree that you can find info using Firebug but with this extension is much easier.

Rated 3 out of 5 stars

You can get all returned data from Firebug. However some people have no idea what Firebug is so Fond Finder is good for them.

Rated 3 out of 5 stars

It seems buggy sometimes but my purpose is to find out which font was used. I'm satisfied with the results and think it's useful

Good stuff Rated 5 out of 5 stars

You can get the info about any font on the page through Firebug but this tool gives you all the data collected and listed in groups. I like this option for changing the font of the entire page.

Font Finder 1.1.1 Rated 4 out of 5 stars

Having this addon really many users will get gained through this, in my point of you its major and very important addon for every developers ,this is used to find the website font styles font size font color line spacing letter spacing...etc very userful addon thanks for your support

Yeah! Please update, there is annoying bug! Rated 3 out of 5 stars

After not close pop-up window, font-analyzer won't work anymore until restart firefox! It's stupid bug. Very annoying. Best addon in this class though.

This review is for a previous version of the add-on (1.0.1-signed). 

Rated 1 out of 5 stars

PLEASE update. It used to work great, but not anymore. This is a great add-on when it works. Used to be a 5 start add-on, not anymore. The dialog box won't even pop up any more to display the information the app promises. Other times, it tells me I have more than one thing selected (which I never do). Fix it please.

This review is for a previous version of the add-on (1.0.1-signed). 

Please update! Rated 5 out of 5 stars

i love this add-on, but please update.. unable to analyze in the same page twice and context menu disappear..

This review is for a previous version of the add-on (1.0.1-signed). 

Can't save the substitutions! Rated 5 out of 5 stars

It seems that the add-on doesn't save the substitutions that we have made.

This review is for a previous version of the add-on (1.0.1-signed).  This user has a previous review of this add-on.

Perfect! Rated 5 out of 5 stars

Perfect!

This review is for a previous version of the add-on (1.0.1-signed).