Fixing iTunes Connect “ERROR ITMS-90717” with ImageMagick

When recently publishing an app to the App Store (or at least trying to get it published back then), I couldn’t upload the app via the Application Loader. I got back ERROR ITMS-90717

“Invalid App Store Icon. The App Store Icon in the asset catalog in ‘Your.app’ can’t be transparent nor contain an alpha channel.”

You can also get a likewise warning later on in iTunes Connect, when uploading the “App Previews and Screenshots”

To easily fix this, you can use ImageMagick’s convert command to remove the alpha:

convert input.png -alpha off output.png

To convert all .png files in a folder, combine the command above with find:

find . -name "*.png" -exec convert "{}" -alpha off "{}" \;

Now replace the assets in your Xcode project file, build your app again, and re-send it to Apple 🙂

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Published by Bramus!

Bramus is a frontend web developer from Belgium, working as a Chrome Developer Relations Engineer at Google. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

Unless noted otherwise, the contents of this post are licensed under the Creative Commons Attribution 4.0 License and code samples are licensed under the MIT License

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