Alright...could be better. Rated 3 out of 5 stars

I was happy at first that it does exactly what it says on the tin, and yet immediately I was hungering for extra features.

Firstly, there is no option to highlight only full words/phrases. If your word or phrase is contained in another word, it will highlight that as well. For instance if your word is "cat" then it would also highlight the "cat" portion of "catchphrase"...not ideal.

The second feature I want is website filtering. I would love to filter which websites the addon works its mojo on.

I would love to have these two features, but considering the last addon update was in 2014 I'm guessing I'm up the creek on that. Just posting this review so others know what they're getting into.

Rated 5 out of 5 stars

Can you please make it pick up the word from selection, if I hold a hotkey or something. Similar to how this addon works - HiliteOnSelection -

The least buggy addon among similar ones. Rated 4 out of 5 stars

However, the only working regex is dot, a placeholder for a single character.
Not any other regex commands are working. Not any other, just a dot. :-(

Thoughts and a couple bugs Rated 5 out of 5 stars

I really enjoy using this product. It can be a little laggy even on my computer, however it's more than acceptable in trade for what it does.

I enjoyed being able to change highlight colors, and am happy to be able to use regex as it makes things much easier to write out in the long run. Others have mentioned adding more text boxes, and while it would be nice, it's still an excellent product as is. One other feature that would be nice is to save "groups" of highlights. Like tabs for when you're doing certain things \work\ VS \personal browsing for reading\ VS \scanning through news articles quickly\. Each situation changes what I want highlighted. I keep them saved in a text file off to the side and just manually switch them so it's not a big deal, but it'd be a nice feature.

I do have at least two bug to point out (the other may not be a bug). They're not major bugs as at least one can be worked around fairly easily, but they are bugs.
... 2/3 the stuff I thought was a bug was an bad interaction with a script I was running on the website. Whoops, I thought I had disabled them all. So I'm editing the stuff below.

First the note, it's questionably a bug. I noticed it when I was writing a regex statement and checked against it against a normal search. I'll use my situation to point it out. In this case I'll make it simple. Say you want to highlight The text "work" as well as "rework" if you use it in that order when the text reads /rework/ only "work" will be highlighted. This occurs with regex patterns as well. However, if you switch the order "rework,work" there is no problem. This also occurs between the text boxes, if it's "work" in the first highlight option box and "rework" in the second, only "work" will be highlighted. Basically the first occurrence of anything highlighted supersedes any other highlight occurrence, even if there's more to the word to highlight. This could be intentional, so I'm not sure if it's a bug or not.

Anyway. I do want you to know that I appreciate the plugin a great deal. It makes my life so much easier and makes hunting through fanfiction to read much quicker as well.

Question Rated 5 out of 5 stars

How to remove completely this add-on with all settings. Or how to reset options to default state?

This user has 2 previous reviews of this add-on.

Rated 5 out of 5 stars

VERY HELPFUL Add-on which has immense potential. A few suggestions which can make it even more useful.

Related to functioning ->
1- A '+' button in the END of colors to Add 6th, 7th etc categories at the bottom as existing 5 categories of colors may be felt not-sufficient sometimes.
2- One option of 'Highlight only on These websites / URLs' - should be included After EVERY color category

GUI Related ->
1- The text-boxes in which one needs to write the phrases - should be 'Multi-line text boxes' instead of 'single-line text boxes' - to make it easier to view the phrases in each category
2- User should be able to make the Options UI - larger / smaller

I'm putting 5 starts - because of Regexp and because it works JUST FINE

Can you fix automatically deleting words in boxes? Rated 5 out of 5 stars


Your extension is very helpful. However, when I type a word in a box, if a phrase I already entered in the Phrase Highlighter matches the phrase I typed in, it automatically erases such words. Let's say I entered "hello" in the Phrase Highlighter, and there is "hello" here in this comment box, the extension deletes it.
Can you fix this please?
2) Could you give us the ability to disable the Phrase Highlighter in certain tabs?

Great ! Rated 5 out of 5 stars

Great Addon, it is exactly what i was searching for to highlight certain words on confusing or cluttered webpages i have to work with every day.


It would be great to have the ability to "Autoload" it only for certain URLs.

A Must-Have Extension for Gamers! Rated 5 out of 5 stars

I started using this extension a while ago for my gaming where I would use guides to make sure I'm not missing out on the opportunities. I try to get them all in one go.

This extension simply is awesome as it allows me to highlight multiple words and to allow me to acknowledge where I am on the guide without re-reading the whole paragraph since the colors/words stands out easily.

I enjoy this extension very much and I can't find anything better. I noticed few things that could be slightly improved.

Give it on/off switch instead of making people toggle repeatedly to get all colors from the list. I also could use more colors too. Perhaps we could start off with buttons that would us to add/delete an option (Option being color picker + textbox) instead of being limited to five.

Overall, it's a great extension for gamers or whatever it is that you guys are going to use it for. Thank you for reading.

Doman by domain Rated 4 out of 5 stars

It would be good to have this highlight different expressions e.g. "version number" on a domain by domain basis and to ignore divs with display:none

This review is for a previous version of the add-on ( 

Great Rated 5 out of 5 stars

Edit: Great update! Works super fast now. Changing to 5 stars.

Old, original review (before the update)
Works, but two issues.
(1) Really slow with large pages or many words, which sucks. What gives? It appears the extension works like this: Find an instance of a word -> Replace HTML adding a font/color wrapper -> Re-render the whole page -> continue search. So each result requires the browser updating the page, making it hang and Firefox will say a couple times that it is not responsive, perhaps for several minutes, and asks you to disable the unresponsive addon.

How should it work? It should use a buffer. It should create a separate variable, a string which contains the document, and do all the replacements, and THEN update the page. That would likely be WAY faster, and not make the browser unresponsive for minutes at a time.

(2) Commas cannot be used in the search, because they are delimiters. Is a big issue in the regular expression search. Author needs to make "\," count as a comma rather than a delimiter, or use some other escape character. I mean, cmon.

I'm now going to look for other extensions, but this will be a backup if I absolutely have no other choice.

This review is for a previous version of the add-on ( 

Improved Performance


Thanks for your insightful review, I very much enjoyed reading much so that I decided to make some updates to PhraseHighlighter.

I have submitted a new version to Mozilla (1.9.2) which should now see hugely improved performance on larger pages. Once this becomes available please download it and see if it feels better to you.

As for regexp phrases with commas (,) I will try to get round to this in the next few weeks.


Pretty Good Rated 5 out of 5 stars

Not exactly what I need, but it opened my mind to needs I had, but hadn't realized. I really like it.

1) It does freeze my browser temporarily and produce the notice:
"This Script was unable to complete, would you like to:
Stop Script __ Debug Script __ Allow to Continue to see if it completes"

2) The highlighting does not remain when I save or resave the page to view offline. It is not "permanent." Maybe a tick box to allow this.

3) Highlighting does not acknowledge spaces (sometimes, I really want to highlight "art " and not all incidences of dep"art", even though I still want to highlight -"ology". Maybe add the "-" to indicate as a word part and "_" to indicate spaces?

This review is for a previous version of the add-on ( 

It's very good to use it Rated 5 out of 5 stars

It's ideal tool to help me saving time to view news. Can I suggest to add one useful function that limit the hightlighter in some web site?

This review is for a previous version of the add-on ( 

Just what I needed, but... Rated 4 out of 5 stars

This worked out well for me in editing pages on my site. It was able to find all items I listed as well as using regex.

The big issue I found that hurts using this product is that after finding what I need if I try and edit a page it erases all words and regex hit that I set up in the edited page.

So when I say search for 540 and it finds it in the page as:

gobblygook 540 gobblygook

But when I go to edit the page I get this:

gobblygook gobblygook

The 540 is deleted.

It would be useful to be able to either to tell it to ignore certain pages when auto-load is on or to tell it to ignore txt area's unless allowed. Or better yet just don't delete anything.

This review is for a previous version of the add-on ( 

Fantastic Rated 5 out of 5 stars

Seems to be just what I was looking for to make reading company reports easier. Could add hours to my life in the time saved!

This review is for a previous version of the add-on ( 

Comma between braces? Rated 5 out of 5 stars

How can we use a comma between braces? something like: abc[0-9]{0,3}, moreText, another... It seems not to work cause the comma is to separate different regex phrases.

We need more inputboxes and colors... maybe a button to "add" another entry.

And a way to scroll to the position of the highlighted word.

This review is for a previous version of the add-on ( 

Best highlighter so far Rated 5 out of 5 stars

Simple but efficient highlighter, I tried many, this seems to be the best by far. Work boundaries (\b) work fine in regular expressions. Would love to see this on Thunderbird, too.

This review is for a previous version of the add-on (1.8.1-signed.1-signed).  This user has a previous review of this add-on.

Really useful, good developer response too Rated 5 out of 5 stars

I monitor updates on about a hundred websites every day and find highlighter tools indispensible to help ensure nothing slips through the net. The inclusion of regex, ability to use different colours for different terms and the continued development of this tool make it the most stable and flexible tool out for recent Firefox builds (works perfectly on FF21 at the time of writing).

I noticed an issue with autoload where background pages weren't being checked but this was fixed in a few days following an email to the developer. Great experience all round!

This review is for a previous version of the add-on (1.8.1-signed.1-signed). 

Rated 4 out of 5 stars

Cool tool.
Would be nice to add ability to search using wildcards or using Regular expression (regex) support.

This review is for a previous version of the add-on (1.6.1-signed.1-signed). 

Reg-ex support

This is now possible in the latest version.

A Great and Simple Addon Rated 3 out of 5 stars

Is it possible to add regexp support.
First Textbox: /\b(Name|Class|A[a-z]+)\b/gi

This review is for a previous version of the add-on (1.1.1-signed.1-signed).