Update link preview image for iTunes app link - ios

I have an iOS app and I am trying to update the image shown in the iMessage link preview. I can't seem to find how to do this.
I'm assuming this can be done by rearranging the "app preview" content from within iTunes Connect, however, the current image shown in the link preview is of the second "app preview" image (within iTunes Connect) and not the first.
The first "app preview" piece is a video. Will Apple use the first non-video "app preview" item for the "link preview" image within iTunes? Or is there another way to update the "link preview" image?
Thanks!

Ok so through experimentation I've found the answer to this.
Apple provides the meta-data for iMessage to use to show the link-preview thumbnail. That meta-data uses the first screenshot within AppStoreConnect (iTunesConnect) as the thumbnail for all previews of your app's store link.
This is confusing since any app-previews (i.e. videos) will NOT have any affect on what is seen within the iMessage link preview thumbnail. This is true even if you specify a specific thumbnail for the app-preview within AppStoreConnect.
So if you want to update the thumbnail for your app's store link you need to update the first screenshot for your app. It will probably take a while to get indexed (took mine around 24 hours)
Hope this helps someone!

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Can anyone share what the issue is? I had implemented appicon using this.
Use https://makeappicon.com website to make app icons it will automatically generate app icons of all sizes required.
This is my first post on StackOverflow so bear with me.
I created this automator workflow, it generates all icon sizes needed for the App Store currently⟨sept 2022)
https://github.com/saxjax/app-icon-creator.git
1- Open in automator and save.
2- Create a squared image 1024x1024 or larger using preview.
3- right click on the image, select "To Icon"
follow the prompts.
The script consists of blocks of 4 for each icon size:
1-Get value
2-Duplicate
3-Scale
4-Rename
If you need a particular size, just copy paste that quadruple and change the pixel size and the name accordingly.
Feel free to manipulate and share the code however you like.
In the future from Xcode 14 and out you only need to provide one 1024x1024 icon in your assets catalog.

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You cannot add it.
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Here is an article on how to get featured in the App Store:
https://thenextweb.com/dd/2013/10/29/get-featured-app-store/
Apple selects popular apps and allows them to add the Cover Photo and Themes. It isn't upto the developers.
From official confirmation on this:
Applications that have custom background art on the App Store are selected editorially by Apple. If your application is selected to be receive custom art, you will be contacted by an Apple representative.

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You can see the photo at here
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I not sure if it was ever possible to upload multiple pictures at once. However, drag & drop (for single files) is still possible - it's just broken in Safari, which opens/displays the dragged file. In Firefox and Chrome, dropping an image file (e.g. some .png) on the "Choose File" button results in an upload.
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Just log in and click on "Contact Us" in the footer.
(I can't provide a link, because it varies)
You can't do that as i have tried up to 2 images

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