Error adding image to card cover
Asked by Andrew Sepic:

I'm getting an error trying to upload an image to a trello card cover. It doesn't matter which Image I'm using. When I try to add the card cover image trello responds with

**Unable to use** ***imagename* as a card cover.**.

See this screenshot for ref -<https://www.dropbox.com/s/bsqqm6dz2ffadbh/Screenshot%202020-05-28%2017.11.56.png?dl=0>

Also, all the images I attach to the card look like this - <https://www.dropbox.com/s/ye0cyvchsbr85xi/Screenshot%202020-05-28%2017.12.01.png?dl=0> and don't offer a preview at that level.


Answers:
author: Michael Pryor
body: It was a bug in Trello and it should now be resolved.

comments: author: Megan Klymiuk
body: This issue is not resolved. The same error message appears as those below have suggested. Trello need to address this or not make this recommendation in their blog and/or help guides.


author: Michael Pryor
body: The other replies in this post are from 2020. If it is happening to you again (I haven't seen it pop up since then) it might be most helpful to start a new thread on it so we can track it down.


author: Karen Griffin
body: I am having this same issue with trying to upload my photos to use as card covers.


author: Aaron Samsel
body: Same issue. Stopped working in the middle of project that needs this feature. Tried all the steps mentioned in this post. I am able to get some images set as cover on Pad and phone, but does not translate to browser (which is the image I need). Any updates?


author: omar Battistoni
body: Same issue for me just now: it was working until 2 hours ago, and then it suddendly stopped working in the middle of a project.


author: Michelle Smith
body: I am currently having the same issue as well!


author: Dawn Gibson
body: Same issue for me - when previously we have be able to do this without issue


author: Robert Irrgang
body: [@Michael Pryor](/t5/user/viewprofilepage/user-id/1131556)   
Hello I'm still having the same problem on my Trello Board. I can't set any Gifs as card cover.  
The error I'm receiving: "Unable to use \<filename\>.gif as a card cover".  

I tried many different formatters to create the \*.gif file. The gif size is below 3 MB. I can upload the gif as an attachment, but can't set it as a cover.  

The developer tools error of my browser:  

Uncaught (in promise) Error index.js:29  
at new t (index.js:29)  
at Object.error (QueryManager.js:137)  
at j (module.js:137)  
at w (module.js:176)  
at e.t.error (module.js:229)  
at Object.error (asyncMap.js:32)  
at j (module.js:137)  
at w (module.js:176)  
at e.t.error (module.js:229)  
at asyncMap.js:27  

Maybe that helps to find the error.  

<br />


author: Denis Pereira
body: It looks like this problem has returned today. I'm facing the same problem!


author: guy_wallart
body: Same issue here also :((


author: Fabian Aguirre
body: same issue here :(


author: Jennifer Lefeaux
body: I'm having the exact same problem right now. Maybe it's not our fault...

All of my attempted attachments are on my local machine.

comments: author: Wendy_Gable_Collins
body: I'm having the same issue. Making an image into "Cover" is not an available option.

I've restarted, used different browsers, and different file types, all without success.