Web Developer Firefox

Download Web Developer

Download Web Developer (current and past versions) for Firefox
Latest Version: 3.0.1 Updated: 2 years ago

Ready to install?

Web Developer is available to install from Firefox Add-ons Store and for download from this page.
View source code
68,701
Daily users
4.3
495 ratings
3
Total downloads

Available versions

You can find the current and older versions of Web Developer here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
VersionDownloadSizeDownload countTimestamp
3.0.1XPI · ZIP · Source code569.78KB22024-06-25
3.0XPI · ZIP · Source code569.49KB12024-06-12
2.0.5XPI · ZIP · Source code1.12MB02020-01-13
3.0.1 569.78KB
2024-06-25 · 2 downloads
3.0 569.49KB
2024-06-12 · 1 downloads
2.0.5 1.12MB
2020-01-13 · 0 downloads

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
  • Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the Web Developer ZIP file from step 1. Web Developer is now installed on your browser.

Best Web Developer Alternatives

Here are some Firefox add-ons that are similar to Web Developer: