This would be great for Pinterest thumbnails as well! Long, skinny posts work great on Pinterest.

I use Custom Resolution for my blog posts. This is the only reason I have to go to Canva and resize image according to my requirements. I would love if Adobe Spark Adds this feature. It helps in improving my productivity.

I'm often building images for eblasts and the image sizes are custom to my eblasts but I use them so often and I'm often repurposing content from our other digital platforms so this would be extremely valuable.

I want to take advantage of the Instagram maximum image size for portrait photos, which is 4:5 (1080 px by 1350 px). This doesn't seem to be a pre set option (even though Instagram introduced this 2 years ago) and I can't see where I can enter a custom size. (Canva allows you to do this.)

I'd love either an Instagram portrait size or a custom size. Not being able to make portrait images for Instagram is sadly a deal breaker for me and I'll need to use other software. Which is a shame because I otherwise love Spark's capabilities.

I frequently use spark for featured images on blog posts. They are a really odd radio and previously I could control the side by uploading a source image that was the proper ratio. Unfortunately the current version of Spark only lets you set things to the pre-defined ratios/sizes. Having the ability to control the ratio or dimensions would be awesome as it would give back the functionality that was lost and enhance it even more.