How to configure Firefox color management

Firefox is a fully color managed browser, but unfortunately that capability is enabled by default only for images tagged with ICC color profiles.
Published by Fábio Pili on October 5th, 2010. Last updated on June 21st, 2014.

Firefox is a fully color managed browser, but unfortunately that capability is enabled by default only for images tagged with ICC color profiles. All other page elements and untagged images are rendered on the full monitor color gamut, leading to inaccurate and over-saturated colors, specially on wide gamut displays. Read more about it on our browser color management guide.

In order to enable and properly configure Firefox color management, follow the steps below.

Find out your monitor profile path

For Mac users:

Open the Colorsync Utility - located inside the Utilities folder on your Applications folder - and click on the profiles tab. Select you monitor profile on the list and copy its full path.

If you don't know what's your monitor profile, look for it into System Preferences > Displays > Color.


OS X stores color profiles at

For Windows users:
Color profiles are usually located at C: > WINDOWS >  System32 > Spool > Drivers > Color.

Enable it on the Firefox advanced configuration

Type in about:config on your Firefox address bar.

Use the filter field to search for color_management.

Firefox color management config

Values that should be changed are shown in bold.

Update the following fields:
Insert the full path of your monitor profile.

0 - Disable color management.
1 - Enable color management for all rendered graphics. (Recommended)
2 - Enable color management only for tagged images only. (Default)

Leave it as 0, which is the default value por Perceptual rendering intent.

Firefox 8 brings a new feature: ICC v4 profiles support. To enable it, change this variable to true.

Restart Firefox.

Test it

You can check how your browser's color management is behaving by accessing our browser color management test.


Oct 22nd, 2010 - 04h34

Thank you for taking your time to post this guide. It's been a real life saver.

Feb 18th, 2011 - 15h20

or install this, it's easier:

Jul 30th, 2013 - 12h20

Did these steps. But my colours in FF 22 are all washed out. I do run a wide gamut monitor (Dell 2407WFP-HC). Could it be the problem?

Jul 30th, 2013 - 19h42

Christian, are you running a custom display profile, or the manufacturer supplied profile? Is it v2 or v4? Your display profile may be corrupt or incompatible.

Oct 31st, 2013 - 05h14

ICC v4 profile support in Firefox doesn't seem to work correctly as of version 25. It is working for me in Internet Explorer 11 so my profile is correct.

Nov 1st, 2013 - 12h28

Devon, Firefox can read ICC v4 profiles embedded in images. ICC v4 display profiles are supposed to work, but I also had some problems in the past. I stick to v2 display profiles for better compatibility.

Dec 11th, 2013 - 21h47

so if I want to set Adobe's color profile manually should I just type the string:





Dec 12th, 2013 - 09h15

Larry, actually you have to set your display's custom color profile, not a working space, like AdobeRGB. If you don't have a calibration hardware, like the Spyder4 or the i1 Display Pro, it is better to leave color management disabled.

Apr 11th, 2014 - 10h34

Thank you for your post. It solved the issues I had with my new wide gamut monitor!

Jos Gysenbergs
May 26th, 2014 - 13h29

Thanks, this solved Firefox's annoying lack of proper color management. This old Color Management 0.5.3 FF add-on doesn't work but your pointers brought normal colors back in FF 29.0.1.

Mar 26th, 2015 - 20h25


thank you for great blog, that helps me alot to understand what happen with my system.

But can you tell me how about dual screen ?

My 2 Dell U2410 have little different factory color and have been calibrated on 2 ICC file different. but I think that we can't introduce 2 ICC on firefox config, right?


Mar 27th, 2015 - 09h02

Hello Huno.

Unfortunately it's only possible to use a single profile in Firefox configuration.

If you're on a Mac, the latest versions of Safari (on 10.9 and 10.10) also correctly process tagged and untagged images and page elements. Since Safari is more tightly coupled with the system, it can possibly understand separate ICC profiles for each LCD.

Another option is to try and match both displays as close as possible during calibration.

Thank you for your comment,


Henkki Zakkinen
Nov 19th, 2015 - 14h53


I use Firefox 42.0 ond Win 7 and just made an observation that made me wonder. All untagged images I looked at in my browser seemed clearly oversaturated. I had the monitor profile set as you suggest. But I also had calibrated my display. After reading on the mozillazine pages re the profile setting, "A string containing the full path to an ICM profile for output. Default is an empty string in which case the systems global profile is used. If no global profile can be found a default sRGB profile is used. ", I decided to delete the setting. That made my Firefox display the colours as I expected it.

Strange somehow...


Scott Rod
Dec 9th, 2015 - 12h40

This doesn't seem to work for Firefox used on iMac (Late 2015) with P3 display.

gfx.color_management.display_profile: /Library/ColorSync/Profiles/Displays/iMac-35288192-BACA-F638-ACA9-0F6D7DBDD4E7.icc

gfx.color_management.enablev4: true

gfx.color_management.mode: 1


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