About ColorZilla
ColorZilla is the long-running all-round colour tool for the browser. Its core is an eyedropper that reads the colour of any pixel on a page. Around it sit a Photoshop-style colour picker, a CSS gradient generator, a page analyser that builds a palette for a site, and a history of recent picks. The developer says it has been downloaded more than 10 million times across Chrome and Firefox.
Picking is flexible. You can sample a single pixel or average a block of up to 25 by 25 pixels, copy values to the clipboard automatically, adjust a colour by hue, saturation and value, and pick at any zoom level. Version 4 added a magnifier and an eyedropper that reads colours from outside the browser window.
It is closed source, and the Chrome version was last updated on 22 May 2024, when it moved to Manifest V3. We found no reports of data selling, injected affiliate links or ownership changes. The listing and privacy page say it collects no browsing data, which is the developer's own statement, and the all-sites permission it needs is broad. The Chrome listing shows no in-app purchases. For most people who need a colour picker, start here.
Pros and cons
- Eyedropper, picker, gradient generator and palette analyser in one
- Sampling sizes from one pixel up to a 25 by 25 average
- Picks colours at any zoom level and from outside the browser window
- No data collection per the developer, with no incidents found
- Closed source
- No update since May 2024 (Firefox since April 2024), though it still works
- Needs access to all websites
Permissions
It asks for access to all websites and to tabs so it can read pixels and element details on any page. Its privacy page says it does not collect your data or browsing activity.
