Disk Usage Sunburst

by RAIDBOXES

Description

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) raidboxes.de

Thanks

Thanks to Mike Bostock for his great “d3js”: http://d3js.org

Thanks to Mike Bostock for his awesome “Zoomable Sunburst” implementation: http://bl.ocks.org/mbostock/4348373

Thanks to Jeffrey Sambells for his “Human Readable File Size with PHP”: http://jeffreysambells.com/2012/10/25/human-readable-filesize-php

Installation

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

Screenshots

Plugin in action

Faq

Where is it?

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

Does this plugin work on a WordPress Multisite?

Yes since 1.1 it does. Note: For privacy reasons you need to be a Superadmin to use this on a Multisite.

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.

Reviews

Excellent plugin!

By Elchanan Levavi (elchananlevavi) on September 5, 2025

Installation was quick, and within a minute I could clearly see which folders were taking up the most space. The sunburst chart is intuitive and easy to understand, and it helped me solve a disk space issue without digging through FTP or SSH. Exactly what I needed.

life saver

By MarkJ (forusak) on June 12, 2025

This is just soo amazing plugin, with not a single alternative.
The only issue is it doesn't work in like 50% cases 🙁

Brilliant Visual Diskspace Breakdown

By Alex T (trecartin) on April 16, 2024

I moved my websites over to Direct Admin (DA) panels. DA doesn't include the option to see file diskspace breakdown like cPanel offers. No problem, because this plugin is far better! And I found some other little gremlins in the mix.

I can confirm it works with WP 6.5.2 (most recent at the time of this review).

Will be recommending this to my clients.

Amazing - does what it should

By Christian Strasser (cswebdesigns) on October 1, 2023

This plugin helped me find some file oaks that made my website slow and the server memory extremely full (database cache log files).

Thank you!

If you don't use this? You're not a WP Dev

By WPsinceO3 (mbedev) on September 6, 2022

I hardly write reviews anymore. Why? Because everything is pure poop and clickbait for premium "features" but every once in a while I come to download one of my must haves for a client site and I have to write something because of how dependable the plugin is and how it is literally a necessity for a site and that is why DUS is getting a 5 star. No one, has tried to do what they have done and it is such a addon to a devs toolbox. Everyone else is competing for social feed plugin users or the coolest new Elementor widgets and yet if you know anything about WP you're here like me downloading DUS for a build. 5 stars all day, everyday!

must have plugin!

By bobbobbius on June 27, 2022

must have plugin!

excellent

By webgalway on January 5, 2022

what an excellent plugin, was having issue with space on server, this immediately identified a rogue plugin that was causing the problem

Useful

By Kostiantyn (speedplus) on July 27, 2021

Very useful plugin. Thank you.

Hugely useful

By Square Eye (SquareEye) on April 28, 2021

Our hosts have a max capacity on our account and old files can make some sites get way too big - this plugin is invaluable for tracing the problems.

yes, and thank you

By wasanajones on 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

Changelog

= 1.1.9
* Update: Successfully tested up to WordPress 6.8.1

1.1.8

Fix: added missing readme.txt changes

1.1.7

Fix: removing trunk/ folder from plugin source code

1.1.6

Update: Successfully tested up to WordPress 6.1.1

1.1.5

Update: renamed RAIDBOXES to raidboxes

1.1.3

Update: Fixed wrong svn trunk commits

1.1.1

Update: Removed unused resources

1.1

Code-rework to make it more efficient and only load resources on it’s plugin page
Made the plugin multisite compatible (Thanks to @shawfactor for his idea)
Successfully tested up to WordPress 5.7

1.0.9

Update: Successfully tested up to WordPress 5.3

1.0.8

Update: Successfully tested up to WordPress 5.1.1

1.0.7

Update: Successfully tested up to WordPress 4.8.2

1.0.6

Update: Successfully tested up to WordPress 4.7.1

1.0.5

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

1.0.4

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

1.0.3

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

1.0.2

Bug fixed: converted short array syntax to long array syntax to support PHP versions < 5.4.0 (thanks to websupporter, https://wordpress.org/support/topic/parse-error-syntax-error-unexpected-146)

1.0.1

Code enhanced: replaced code 10 with ‘administrator’ capability when calling add_submenu_page (thanks to doume, https://wordpress.org/support/topic/v100-deprecated-argument-in-function-call)
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

1.0.0

First Version