This is a pretty informative post about optimizing custom python code to do some image manipulations, but if you just want to make images like in the post, a se

This is a pretty informative post about optimizing custom python code to do some image manipulations, but if you just want to make images like in the post, a service like Imgix could do a pretty good job and would work with App Engine, no matter which language you choose. I spent 5 minutes with the imgix sandbox and made this, which is pretty close to the samples (I didn't have the correct font or a white colored logo): https://sandbox.imgix.com/view?url=https%3A%2F%2Fassets.imgix.net%2Funsplash%2Fpaperlamp.jpg%3Fmarkalign%3Dbottom%252Cleft%26mark%3Dhttp%253A%252F%252Fp6.zdassets.com%252Fhc%252Fsettings_assets%252F526991%252F200061184%252F3t62mqN9s2QjpyHy0CTEcg-smaller_logo.png%26txtalign%3Dcenter%252Cmiddle%26txtfont%3DAvenir-Black%26txtsize%3D125%26txtclr%3Dfff%26txt%3DCALLIGRAPHY%26bm%3Dmultiply%26blend%3D94424f%26bri%3D50%26sat%3D-50%26fit%3Dcrop%26h%3D720%26w%3D1280 https://sandbox.imgix.com/view?url=https%3A%2F%2Fassets.imgi...