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I want to use regular expressions to search a page in Firefox.

Is this possible?

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Please change your accepted answer. The one you picked years ago is about an extension that isn't being developed anymore. – user33758 Jan 8 at 1:20
up vote 17 down vote accepted

Fastest Search

Best text search on page/in tabs - count/regex/match distribution/list/find-as-you-type. Fastest Instant web/history search in URLBar. Best custom search and multi-tab preview in any box or for selected text. Autocopy, dnd link/image.

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+1 since this is a no-restart addon. Cheers ! – Ashutosh Jindal Dec 17 '12 at 17:51
I won't put -1, but to me, this addon is too much bloated... – Sarge Borsch Sep 22 '13 at 9:25
Couldn't make it work on Mac – Christian Vielma Feb 16 at 12:04

Yet another option matching my needs very well is Regex Find which is open sourced. It's simple, though it may not be so polished.


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I honestly prefer this way more to @Oleg's answer of Fastest Search. IMO it's super bloated and kinda confusing, I love the fact that Regex Find is integrated into the native Firefox search – Jeeter Jul 13 at 19:57


This includes 3 features about the find toolbar. First, the dictionary-assisted find. Second, more customizable Find Toolbar. Third, the highlight feature like Safari 3.

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Amazing addon! Thank you! – BrunoLM Nov 8 '10 at 21:05
Not available for FF6 yet ... – Peter Nore Aug 17 '11 at 19:37
How do you activate the regex search functionality with XUL/Migemo? – user48604 Sep 2 '11 at 14:19
It seems development on this plugin has stopped. The last updated date on the addon page is July 13, 2010. – Ashutosh Jindal Dec 17 '12 at 17:50
@Charbel: There is a good chance that XUL/Migemo can still be forced to work. A quick google for "firefox add-on compatibility" got me this article, but there are many more useful results. – harrymc Mar 27 '14 at 11:51

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