creating a thumbnail to size for pub

[#1]

First time creator, trying to upload an epub file to Ingram Spark. Being told "image width for thumbnail exceeds maximum of 9999." Wasn't even aware I had created a thumbnail. Where can I find this?

[#2]

First time creator, trying to upload an epub file to Ingram Spark. Being told "image width for thumbnail exceeds maximum of 9999." Wasn't even aware I had created a thumbnail. Where can I find this?

[#3 · Accepted solution]

https://www.ingramspark.com/blog/ingramspark-ebook-conversion