Due to new Firefox add-on developer requirements and restrictions requiring all future add-on development to be done using WebExtensions technologies, ColorZilla for Firefox has been re-written from the ground up to comply with the new requirements.

This new version retains all the functionality, but there might be minor UI/UX and other differences.

Please contact us to report any issues.


  • Eyedropper - get the color of any pixel or area on the page
  • An advanced Color Picker similar to ones that can be found in Photoshop and Paint Shop Pro
  • Webpage Color Analyzer - analyze DOM element colors on any Web page, locate corresponding elements
  • Ultimate CSS Gradient Generator
  • Palette Viewer with 7 pre-installed palettes
  • Color History of recently picked colors


  • Displays element information like tag name, class, id, size etc.
  • Outline elements under the cursor
  • Auto copy the generated or sampled colors to the clipboard in CSS RGB, Hex and other formats.
  • Keyboard shortcuts for quickly sampling page colors using the keyboard.
  • Get the color of dynamic elements (hovered links etc.) by resampling the last sampled pixel

Bonus features

  • Single-click color picking - click on the main ColorZilla toolbar icon and you're ready to pick (currently only available on Windows).
  • Pick colors from Flash objects
  • Pick colors at any zoom level

Check out for more info.