MyBB Community Forums

Hi guys. I have tried to resize attachments by selecting "Thumbnails" like so:



And this just replaces the attachment for the download link. Do I need special PHP addons to do this or a Plugin?

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I think the main problem is the format. gd only supports 4 formats. Does this mean not all attachments will be resized?

yes, i think thats the issue. i have some pictures with jpg extensions in my forum that cannot be resized.