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.

Disk Usage Sunburst


This plugin (Tools -> Disk Usage) shows all files of your WordPress installation at once. These are displayed in a so
called “Sunburst Chart”. Each arc of the chart is either a directory or a file. Move your mouse over an arc to see the size
of the file or directory. The bigger the arc is the bigger is the file/directory.

Very useful to determine the biggest files in your WordPress installation!

Click on an arc to zoom in, and click in the circle to zoom out again.

Questions? Drop us a mail: wp-dev (at)


Thanks to Mike Bostock for his great “d3js”:

Thanks to Mike Bostock for his awesome “Zoomable Sunburst” implementation:

Thanks to Jeffrey Sambells for his “Human Readable File Size with PHP”:


  • Plugin in action


  1. Upload to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. See it in action under Tools -> Disk Usage!


Where is it?

After activation you find the tool under Tools -> Disk Usage

Loading bar doesn’t go away

In this case unfortunately this plugin can’t calculate the sizes of all your WordPress files. Check if there’s a PHP time limit in your WordPress and try to increase it.


May 17, 2020
I'm sort of experienced WP user. But I've forgotten more than I remember, and loathe to use SSH or CLI to actually find stuff. My wp-content folder was waaay tooooo large and I knew something wasn't right but didn't know where to look. After poking around the usual suspects I added Disk Usage Sunburst ... which told me my wp-admin was 3.7 GB... hey that ain't right... poke around... find a 3.5 GB error log.... oops... thanks
December 27, 2019
Helped me find those elusive huge backup files that were hiding.
December 5, 2019
I used to use the P3 plugin to compare the sizes of my plugins, which was an important tool, but the author of the plugin stopped updating it. I came across this plugin from an article reviewing 16 alternatives to the P3 plugin. The disk usage sunburst was listed at the bottom. But it really is the only real alternative. When you turn it on and drill down to where the wp content>plugins area is, you can see which of your plugins are big (e.g.: All-in-one Calendar, WP SEO Yoast, GravityForms) and which ones are not (e.g.: Disk Usage Sunburst).
November 26, 2019
Awesome plugin, used many times on many sites. Quick and easy way to see how large your entire site is (apart from database of course). Also a great way to see what's pushing you over a quota and causing upload errors, or other types of errors (if you have a quota).
Read all 28 reviews

Contributors & Developers

“Disk Usage Sunburst” is open source software. The following people have contributed to this plugin.


Translate “Disk Usage Sunburst” into your language.

Interested in development?

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



  • Update: Successfully tested up to WordPress 5.3


  • Update: Successfully tested up to WordPress 5.1.1


  • Update: Successfully tested up to WordPress 4.8.2


  • Update: Successfully tested up to WordPress 4.7.1


  • Advice: If you don’t see anything, increase php time limit… This plugin is maintained!


  • Bug fixed: browsers without SVG support didn’t see anything. Now these will get a nice red error message 😉


  • Bug fixed: Show error message if calculation of file/directory sizes fails (e.g. because of time limit)


  • Bug fixed: converted short array syntax to long array syntax to support PHP versions < 5.4.0 (thanks to websupporter,


  • Code enhanced: replaced code 10 with ‘administrator’ capability when calling add_submenu_page (thanks to doume,
  • User Interface enhanced: tooltip follows mouse cursor when mouse is moving
  • Bug fixed: the distance between tooltip and mouse cursor was dependent on the scroll position


  • First Version