How to Audit Your Website Disk Space: A Step-by-Step Guide

If you’ve received a notification that your disk space is full – or if it seems to be filling up faster than expected – it’s time for a “digital deep clean.” Most of the time, the culprit isn’t the website itself, but hidden files, unoptimized media, or software “hoarding.”

Here is how to find exactly what is taking up the room.

1. Get the Stats in cPanel

Don’t guess where the space is going. Use the Disk Usage tool in cPanel to get a definitive look at your files.

1. Log in to cPanel and scroll to the Files section.
2. Click on Disk Usage.
3. Scroll past the initial summary table to the very bottom of the page.
4. You will see a list of directories. Click the Disk Usage header to sort by size (this puts the largest folders at the top).
5. Click the “>” arrows to “drill down” into folders like public_html and wp-content.

Quick Tip: If a folder named mail or logs is at the top, your issue isn’t the website – it’s likely old emails or server error reports. If public_html is the largest, that’s where your website files live.

2. Common Causes of “Bloat”

Before looking at specific platforms, check for these universal space-hogs:

• Unoptimized Images: A photo straight from a smartphone can be 5MB+. On a website, it should be compressed to under 200KB.
• Log Files: Look for a file named error_log. If your site has a minor technical conflict, the server writes it down. If left unchecked, these text files can grow to several Gigabytes over time.
• Old Backups: Some tools create backups and store them on your server. If your site is 500MB and you keep 10 old backups, you’ve used 5GB of space for files you’ll probably never use.

Related: What are the Most Bloated and Sluggish Website Builders of Today?

3. The WordPress Factor: Full Site vs. Integrated Blog

How you use WordPress significantly changes your “disk footprint.”

The “Full Website” (The Heavy Way)

If your entire site is built on WordPress, you are likely using heavy page builders, shop systems, and various security suites.

• The Cost: These plugins aren’t just code; they come with their own assets and database entries. A “heavy” WordPress install can easily hit 300MB – 500MB before you even upload a single photo.
• The Image Multiplier: Every time you upload one photo, WordPress often generates 5 to 10 smaller copies (thumbnails) to fit different parts of the layout.

Related: How One Plugin Update Broke a WordPress Site – And How You Can Avoid It

Why WordPress Users Are Switching to UltimateWB: 10 Data-Driven Reasons

The “Integrated Blog” (The Lean Way)

If you are using WordPress just as a blog section for a site built on a more efficient engine (like UltimateWB which offers this as a built-in option), your footprint is drastically smaller.

• The Cost: A clean “Core” WordPress installation – without a mountain of plugins – is more lean, usually hovering around 60MB – 100MB.
• The Benefit: By using the “Core” just for your writing, you avoid the “Plugin Tax.” You don’t need heavy builders or redundant security tools because the main engine handles the heavy lifting. You get the SEO benefits of a blog without the 1GB headache.

4. How to Fix It

Once you’ve identified the problem in the cPanel Disk Usage tool, you can take action:

1. Delete Unused Themes: You only need your active theme and one “fail-safe” backup. Delete the rest.
2. Clear the tmp and trash folders: In cPanel, these are often safe to purge.
3. Optimize your Media: Compress your images before uploading them.
4. Remove “Ghost” Folders: If you deleted a plugin but its folder is still showing up in wp-content/plugins, delete it manually via the File Manager.

Still not sure what to delete? Send us a screenshot of your cPanel Disk Usage table. We can look at the data and tell you exactly which files are safe to prune.

Ready to design & build your own website, without a need for third-party plugins? Learn more about UltimateWB! We also offer web design packages if you would like your website designed and built for you.

Got a techy/website question? Whether it’s about UltimateWB or another website builder, web hosting, or other aspects of websites, just send in your question in the “Ask David!” form. We will email you when the answer is posted on the UltimateWB “Ask David!” section.