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Thumbnails not displaying on Trello cards

For some reason thumbnails of attached JPGs are no longer showing up on my Trello cards, and the option to choose one of the images to 'make cover' is gone. Can anyone help? I've got cover images enabled in settings and all my old Trello cards are fine, it's just newly created ones. It's not just happening on my PC either so it's not a storage issue - it's happening on my client's PC as well, when she views the same Trello cards. 

1 answer

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Lara Atlassian Team Jul 12, 2022

Hi Tori,

Thanks for reaching out!

I've replied to your support ticket, but I'll copy over my response here for posterity.

Our team has looked into this, and it looks like the image files you are attaching are actually WebP image files instead of JPEG files. WebP files are currently not supported for attachment thumbnails and card covers.

Our team is working on bringing WebP image support in the coming months.

For now, the workaround is to convert the file to a JPEG file and then upload it to Trello.

All the best,

The Trello Team

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