Note the attachment ID, filename and direct URL. Keep a copy of the original and a suitable backup before a large cleanup. If the image is a logo, background, product image or document preview, expect references outside ordinary post content.

1. Search page and post content for the image or its URL using the site's supported tools.
2. Check featured images, galleries, synced patterns, template parts and theme settings.
3. Review relevant plugin records, such as products, sliders or page-builder layouts.
4. Consider links in emails, downloadable documents and external sites that a WordPress content search cannot discover.
5. For uncertain items, retain them until a developer-reviewed reference check or replacement plan is complete.

A media-cleanup plugin can help identify candidates, but its detection is limited by the storage formats and integrations it understands. Review its documentation and test on staging. Do not treat an automated unused label as proof that deletion is safe.

Generated thumbnail files also have relationships to the original media record. Manually deleting similarly named files from the uploads folder can break responsive images even when the main original remains.

Start with a reviewed small set and inspect the affected public pages afterward. Media deletion can be permanent, so preserve a recovery copy and know how to restore the correct file paths and metadata if necessary.

If a broken image appears later, record the requested URL and identify whether it was an original or a generated size. Restoring only a different filename may not fix the reference. A database restore can overwrite newer content, so prefer a targeted recovery when the scope is known.

Storage cleanup is successful when the site remains complete and the removed files are genuinely unnecessary, not merely when the uploads folder becomes smaller.

• Replacing a linked image without breaking existing pages
• Finding oversized media that increases backup storage
• Creating a manual WordPress files-and-database backup
• Restricting public access to sensitive uploaded files

• WordPress: Media Library Screen
• WordPress: Use Image And File Attachments