This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Window Width


A simple addition to the WordPress admin bar that displays the current viewport width.
Uses the lovely viewportSize jQuery plugin by Tyson Matanich.


  • The window width displays right in the admin bar – this screenshot shows it in the admin.
  • This screenshot shows where Window Width is often most useful: on the front-end of your site, handy for theme development.
  • In this screenshot, an obnoxious red arrow points out how the window width persists in the WordPress admin bar even in its minified responsive view.


Install like any other plugin:

  1. Upload the /window-width folder from your download to the /wp-content/plugins/ directory on your site.
  2. Activate the plugin in your WordPress admin.
  3. Rejoice.


Are more features coming?

Probably not – this is meant to be an extremely simple utility.

Does this work fine with the new responsive admin bar introduced in WordPress 3.8?

Yes, the window width displays fine in the admin bar – even in smaller viewport sizes.

Does the width only display in pixels?

Currently, yes.

Contributors & Developers

“Window Width” is open source software. The following people have contributed to this plugin.


Translate “Window Width” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



Initial release.