Web Developer Features

The Web Developer extension adds various web developer tools to a browser. The extension is available for Chrome, Firefox and Opera, and will run on any platform that these browsers support including Windows, OS X and Linux.


  • The original concept for the Web Developer extension came from the PNH Developer Toolbar.
  • The icons used in the extension are from Helveticons and Icon Drawer.
  • The complex string options support was suggested and written by Norio Minato.
  • Feature acknowledgements:
    • Many of the features were inspired by Jesse Ruderman's Bookmarklets.
    • The 'Clear Session Cookies' feature was written by Viliam Durina.
    • The 'Display Element Information' feature was inspired by the Mouseover DOM Inspector written by Steve Chipman.
    • The 'Display Image File Sizes' feature was written by Kevin Hamilton.
    • The 'Display Topographic Information' feature was inspired by the Topographic View bookmarlet written by Joseph Pearson.
    • The 'Edit CSS' feature was inspired by the Edit CSS extension.
  • Thanks to all those who have emailed me with bugs, feature requests or just messages of encouragement.
  • Special thanks to those who have donated—your donation allows me to continue my development.