Performance6 min read·Updated September 5, 2026

Hosting Storage Full? Images Are Usually Why

Shared hosting 'disk full' is often `wp-content/uploads` or `public/images`. Convert the heaviest 100–500 files to WebP, replace, delete the unused originals, and you get gigabytes back without a plan upgrade.

Disk and download are cousins

A 5 MB original on disk is also a 5 MB download if the theme links it. Fixing weight fixes both invoices: host and CDN.

Why it matters

Backups get slow and expensive.
Staging copies of production include every original.
Authors never delete.

How to do it

Sort by file size on disk.
Convert the fattest files. Replace references.
Delete orphans (backup plugins help). Keep a cold backup first.

Settings that work

Do not convert files you do not use. Delete those.

Put it into practice

Convert your images to WebP right now, free and privately in your browser.

Open the converter

Frequently asked questions

If the filename changes, add redirects or keep the old name with a new extension and update HTML.

Yes with the API or a WP plugin. For a one-time rescue, the browser batch is safer.

Keep reading

Performance6 min read

Why images are huge

The usual reasons images are huge — phone photos, PNG screenshots, 2× exports — and the WebP batch that fixes them.

Platforms6 min read

WordPress WebP, no plugin

You do not need an image optimisation plugin to use WebP on WordPress. Upload correctly sized WebP files and let core srcset work.