Hi,
I was going through the Ghost issue list on GitHub and found that the there is an issue for image processing on Ghost.
Under the “What we know so far” section, I found that you are searching for a better image processing library that is built in PureJS. I know it’s a challenging task without a library but I found a library which might work on the basic requirements we have such as resizing, cropping and generating thumbnails etc.
Please take a look at the following library.
https://github.com/oliver-moran/jimp
Thanks
Kasun.