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Support » Plugin: Regenerate Thumbnails » Does regenerating thumbnails lower original file quality?
(@baptistej)
3 years, 7 months ago
Hello,
This might be a stupid question but I was wondering if the original file is re-saved or lose quality when using this plugin?.
Thanks.
(@alexsanford1)
Generally, the original file retains its quality. The generated thumbnails are stored as new files, and the original is not overwritten.
However, WordPress itself (since 5.3) will do some automatic resizing for large image files. See this article for more info.