Web Developer's Toolbox

By: Falna

About this add-on

Web Developer's Toolbox provides a collection of 59 tools to aid website developers and inform the curious.

A wide range of features are included, accessible via a toolbar or a menu, including:

  • Disable Java, Javascript and meta redirects
  • View, add, disable and delete cookies
  • Display, edit and disable style sheets
  • Populate or clear forms, display passwords and disable validation
  • Hide images, display their alt tags, view their paths and sizes
  • Display anchors, div order, ID & class details, links and meta tags
  • Clear the cache and history, display hidden elements, use a magnifying glass
  • Outline blocks, frames, headings and external links
  • Resize the browser and simulate mobile screen sizes
  • Validate CSS, HTML, feeds and accessibility
  • View and edit source code

...and many others.

In addition to English, the following locales are also supported:

  • Czech / Čeština
  • French / Français
  • German / Deutsch
  • Polish / Polski
  • Portuguese / Português brasileiro
  • Swedish / Svenska
  • Chinese / 中文(中华人民共和国)
  • Japanese / 日本語

Web Developer's Toolbox is a fork of Web Developer by Chris Penderick.


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Release Information

Version 1.0.3
Updated on April 13, 2021


Pale Moon 29.0 to 29.*


GNU General Public License 3.0


Add-on Releases (Version History)

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