{"id":51866,"date":"2026-10-17T13:57:20","date_gmt":"2026-10-17T10:27:20","guid":{"rendered":"https:\/\/8899.ir\/web\/?p=51866"},"modified":"2026-10-17T13:57:20","modified_gmt":"2026-10-17T10:27:20","slug":"stp-web-20261016-thumbnails-en","status":"publish","type":"post","link":"https:\/\/8899.ir\/web\/stp-web-20261016-thumbnails-en\/","title":{"rendered":"Regenerate old thumbnails after changing a theme"},"content":{"rendered":"
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Regenerate old thumbnails after changing a theme<\/h2>\n
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A theme change may require image sizes that were never generated for older uploads.<\/p>\n

reGenerate Thumbnails Advanced can recreate the required image sizes.<\/p>\n

Back up both files and the database before running the process.<\/p>\n

Install and activate the plugin only from its official WordPress page.<\/p>\n

Review the available thumbnail sizes and begin with one test image.<\/p>\n

Regenerate that image, then inspect its post card on desktop and mobile.<\/p>\n

If the crop looks wrong, also review the theme\u2019s focal point or aspect ratio.<\/p>\n

Do not remove old sizes without a backup and confidence that the previous theme no longer needs them.<\/p>\n

For a large media library, run the job in stages during a quiet period.<\/p>\n

Finally, open several old and new posts and check that no image is broken.<\/p>\n

Plugin and demo links<\/h3>\n

A public live demo is not available; official plugin screenshots are linked below.<\/p>\n