Title: Disk Usage Sunburst
Author: RAIDBOXES
Published: <strong>April 8, 2015</strong>
Last modified: May 13, 2026

---

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# Disk Usage Sunburst

 By [RAIDBOXES](https://profiles.wordpress.org/raidboxes/)

[Download](https://downloads.wordpress.org/plugin/disk-usage-sunburst.2.0.4.zip)

 * [Details](https://wordpress.org/plugins/disk-usage-sunburst/#description)
 * [Reviews](https://wordpress.org/plugins/disk-usage-sunburst/#reviews)
 *  [Installation](https://wordpress.org/plugins/disk-usage-sunburst/#installation)
 * [Development](https://wordpress.org/plugins/disk-usage-sunburst/#developers)

 [Support](https://wordpress.org/support/plugin/disk-usage-sunburst/)

## Description

**Disk Usage Sunburst 2.0** is a completely modernized WordPress plugin that visualizes
your site’s disk usage through an interactive sunburst chart. Quickly identify large
files and directories that may be consuming valuable storage space on your WordPress
installation.

#### ✨ New in Version 2.0

 * **Modern Architecture**: Complete rewrite with object-oriented PHP and PSR-4 
   autoloading
 * **Enhanced Security**: Proper nonce validation, capability checks, and input 
   sanitization
 * **Performance Optimized**: Timeout protection, memory management, and intelligent
   caching
 * **D3.js v7**: Upgraded to the latest D3.js version with smooth animations and
   mobile support
 * **REST API**: Full REST API endpoints for developers and external integrations
 * **Better UX**: Responsive design, progress indicators, and detailed error reporting
 * **Export Options**: Export charts as PNG, SVG, or raw JSON data
 * **WordPress 6.9+ Ready**: Tested with the latest WordPress versions

#### 🎯 Key Features

 * **Interactive Sunburst Chart**: Click to zoom in/out through your directory structure
 * **Real-time Tooltips**: Hover for detailed file/directory information
 * **Performance Settings**: Configurable limits for large installations
 * **Cache Management**: Smart caching with manual cache clearing options
 * **Multisite Compatible**: Works seamlessly on WordPress multisite networks
 * **Developer Friendly**: Action hooks, filters, and REST API endpoints
 * **Accessibility**: Keyboard navigation and screen reader support

#### 🔧 Technical Requirements

 * WordPress 5.0 or higher
 * PHP 7.4 or higher
 * Modern browser with SVG support

#### 🎨 How to Use

 1. Navigate to `Tools` -> `Disk Usage` in your WordPress admin
 2. Click “Start Scan” to analyze your installation
 3. Interact with the sunburst chart:
 4.  * **Click** on any arc to zoom into that directory
     * **Click** the center circle to zoom back out
     * **Hover** over arcs to see detailed information
     * **Use keyboard**: ESC to zoom out, Home to return to root

#### 🔌 Developer Features

 * REST API endpoints at `/wp-json/disk-usage/v1/`
 * Action hooks: `rbdusb_scan_completed`, `rbdusb_scan_error`
 * Filter hooks: `rbdusb_exclude_paths`, `rbdusb_scan_results`
 * WP-CLI support (coming soon)

Questions? Contact us: support (at) [raidboxes.de](http://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

## Screenshots

 * [[
 * Plugin in action

## Installation

 1. Upload `disk-usage-sunburst.zip` 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`!

## 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

![](https://secure.gravatar.com/avatar/bc4811254f1b9770f9aef349ccabeea37d7471e0beec475f95c280f3b53ce308?
s=60&d=retro&r=g)

### 󠀁[Error most of the time](https://wordpress.org/support/topic/life-saver-341/)󠁿

 [MarkJ](https://profiles.wordpress.org/forusak/) December 26, 2025

Error most of the time

![](https://secure.gravatar.com/avatar/8059b2a501c712ebe4e3d9810c5743191b99301dfde5dcc1a2902acb3c762326?
s=60&d=retro&r=g)

### 󠀁[Excellent plugin!](https://wordpress.org/support/topic/excellent-plugin-9664/)󠁿

 [Elchanan Levavi](https://profiles.wordpress.org/elchananlevavi/) 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.

![](https://secure.gravatar.com/avatar/08c3baedd4c4512966b786b930d4b3369b08ddc5cf68c3186827bd908695d8ae?
s=60&d=retro&r=g)

### 󠀁[Brilliant Visual Diskspace Breakdown](https://wordpress.org/support/topic/brilliant-visual-diskspace-breakdown/)󠁿

 [Alex T](https://profiles.wordpress.org/trecartin/) 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.

![](https://secure.gravatar.com/avatar/d0ae069860857684e2ae5dd3bbf56b3ac07029ee5d9bcd8d78fe459963540cca?
s=60&d=retro&r=g)

### 󠀁[Amazing – does what it should](https://wordpress.org/support/topic/amazing-does-what-it-should/)󠁿

 [Christian Strasser](https://profiles.wordpress.org/cswebdesigns/) 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!

![](https://secure.gravatar.com/avatar/0dd381d5ae0865b986c1ff6d6e817fe877da01170d28329c2301b5d34f0315ca?
s=60&d=retro&r=g)

### 󠀁[If you don’t use this? You’re not a WP Dev](https://wordpress.org/support/topic/if-you-dont-use-this-youre-not-a-wp-dev/)󠁿

 [WPsinceO3](https://profiles.wordpress.org/mbedev/) 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!

![](https://secure.gravatar.com/avatar/1069b216c5de56588a7726ad6a487032e9b9d48fe9b1b831c73f1c7807f443f5?
s=60&d=retro&r=g)

### 󠀁[must have plugin!](https://wordpress.org/support/topic/must-have-plugin-474/)󠁿

 [bobbobbius](https://profiles.wordpress.org/bobbobbius/) June 27, 2022

must have plugin!

 [ Read all 36 reviews ](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/)

## Contributors & Developers

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

Contributors

 *   [ RAIDBOXES ](https://profiles.wordpress.org/raidboxes/)
 *   [ Matthias Held ](https://profiles.wordpress.org/mazeheld/)
 *   [ Christian Zimpel ](https://profiles.wordpress.org/christianzimpel/)

[Translate “Disk Usage Sunburst” into your language.](https://translate.wordpress.org/projects/wp-plugins/disk-usage-sunburst)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/disk-usage-sunburst/),
check out the [SVN repository](https://plugins.svn.wordpress.org/disk-usage-sunburst/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/disk-usage-sunburst/)
by [RSS](https://plugins.trac.wordpress.org/log/disk-usage-sunburst/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

 * 2.0.4: Tooltip fix
 * 2.0.3: Security Fix: Sanitize file names in tooltips to prevent Stored XSS.
 * 2.0.2: Increased scan limits for large websites.

#### 2.0.0

 * **MAJOR UPDATE**: Complete plugin rewrite with modern architecture
 * **New**: Object-oriented PHP with PSR-4 autoloading and namespacing
 * **New**: Enhanced security with proper nonces, capability checks, and input sanitization
 * **New**: Performance optimizations – timeout protection, memory management, intelligent
   caching
 * **New**: Upgraded to D3.js v7 with smooth animations and mobile responsiveness
 * **New**: REST API endpoints for developers (`/wp-json/disk-usage/v1/`)
 * **New**: Export functionality (PNG, SVG, JSON)
 * **New**: Progress indicators and detailed error reporting
 * **New**: Responsive design with accessibility improvements
 * **New**: Developer hooks and filters for extensibility
 * **New**: Comprehensive test suite with PHPUnit
 * **Improved**: Better multisite compatibility with network admin integration
 * **Improved**: Modern WordPress compatibility (tested up to 6.5)
 * **Improved**: Enhanced user interface with better controls and statistics
 * **Fixed**: All security vulnerabilities and performance issues from v1.x
 * **Requires**: WordPress 5.0+, PHP 7.4+

#### 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

## Meta

 *  Version **2.0.4**
 *  Last updated **18 hours ago**
 *  Active installations **9,000+**
 *  WordPress version ** 5.0 or higher **
 *  Tested up to **6.9.4**
 *  PHP version ** 7.4 or higher **
 * Tags
 * [disk space](https://wordpress.org/plugins/tags/disk-space/)[disk usage](https://wordpress.org/plugins/tags/disk-usage/)
 *  [Advanced View](https://wordpress.org/plugins/disk-usage-sunburst/advanced/)

## Ratings

 4.8 out of 5 stars.

 *  [  33 5-star reviews     ](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/?filter=5)
 *  [  0 4-star reviews     ](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/?filter=4)
 *  [  1 3-star review     ](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/?filter=3)
 *  [  1 2-star review     ](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/?filter=2)
 *  [  1 1-star review     ](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/disk-usage-sunburst/reviews/)

## Contributors

 *   [ RAIDBOXES ](https://profiles.wordpress.org/raidboxes/)
 *   [ Matthias Held ](https://profiles.wordpress.org/mazeheld/)
 *   [ Christian Zimpel ](https://profiles.wordpress.org/christianzimpel/)

## Support

Issues resolved in last two months:

     0 out of 2

 [View support forum](https://wordpress.org/support/plugin/disk-usage-sunburst/)

## Donate

Would you like to support the advancement of this plugin?

 [ Donate to this plugin ](https://raidboxes.io)