User Agent: Mozilla/5.0 (X11; Linux i686; rv:6.0) Gecko/20100101 Firefox/6.0 Build ID: 20110814102054 Steps to reproduce: I (as many others*) wanted shrinkable tabs, instead lots of scrollable tabs * I saw commentes that is dumb UI to have tabs of 16px, but some people find it really helpful. Most sites uses favicons, so you can recognize them, and other peoples rearange the order of tabs so they know where are placed, they may use shortcuts to go to them too, etc... some people have sections about things to do, things to read, things to buy, etc... If you you have more than 20-30 tabs, it works great and you dont waste time moving over a scroll searching and reading tabs Actual results: Dao removed it :) Expected results: This is a feature request to add a new hidden pref (or a public pref at menu if you find it to be better) to activate shrinkable tabs. As you may already know we used to do this using about:config and min/max width prefs. After DAO "fixed" this feature on firefox 4 https://bugzilla.mozilla.org/show_bug.cgi?id=574654 the only way to achieve this is editing the userchrome file: https://bugzilla.mozilla.org/show_bug.cgi?id=574654#c110 (using a minimum of 16px for example) or using third party addons, that my not be updated or work as intended. I think that an option to achieve this behavior, without editing files or using external addons, will do life happier of many people. Best regards.

It's was previous wontfix'ed in bug 648218.

I like Leyra comments there: https://bugzilla.mozilla.org/show_bug.cgi?id=648218#c3 Not asking to return options, but adding a new/better one for all the people... (as we do not ask for a fixed width tab) btw, if this is implemented somewhere, It would be whise to set browser.tabs.closeButtons to 3, so to have just 1 close button at right (there is no place for it in a max 30px tab)

A few related bugs/changes: Bug 597564 - Default minimum tab width should be smaller to prevent tab scroll Bug 685059 - Remove empty placeholder icon when a page has no favicon Showing close button even for lower tab widths (by reducing browser.tabs.tabClipWidth)

If it ain't broke, don't fix it. Why were shrinking tabs replaced with the "comedy carousel" in the first place?

What needs to be done for this to happen? I suspect it's not an implementation effort issue - however if it is: would a patch for this get reviewed/accepted? I suspect it might be easier to first have the hidden pref and introduce an UI for it in a different bug.