Now for the biggest space-eater: images. But use some caution when deleting them - just because they’re old doesn’t mean they are not still in use.
Click on Media to see your library. If the thumbnail images are displayed in a grid, click on the layout icon just below the page title to switch. The list view may show if they are attached to an existing post or page, but ‘Unattached’ images could be in use elsewhere, such as in a sidebar or header. So if it’s an ‘evergreen’ image (still relevant), err on the side of caution and keep it.
If your site has been around a while, you may want to filter by time frame as shown in the screenshot below; otherwise, jump to the last page and start there.
There is an option to download individual images before deleting if you need a backup. Hover over the image title and Download file.
Click Delete Permanently to remove an image – there’s no Undo button for this! If you have whole pages of unneeded images, you can delete them a page at a time using the Bulk actions option, which works just the same as for posts.
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