It takes some time to decode, but I can grab- for example- this 259k JPEG: http://placekitten.com/3840/2160 http://placekitten.com/3840/2160 And display it fro

It takes some time to decode, but I can grab- for example- this 259k JPEG: http://placekitten.com/3840/2160 http://placekitten.com/3840/2160 And display it from the microSD card with this code: https://gist.github.com/Gadgetoid/0b8e352e377135d743338c9483178c01 https://gist.github.com/Gadgetoid/0b8e352e377135d743338c9483... As more or less demonstrated by this example: https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/examples/inky_frame/inky_frame_placekitten.py https://github.com/pimoroni/pimoroni-pico/blob/main/micropyt... Decoding is done via Larry Bank's JPEGDEC: https://github.com/bitbank2/JPEGDEC https://github.com/bitbank2/JPEGDEC It uses roughly 20k RAM to provide the necessary buffers both for decoding JPEGs into blocks which are passed to a drawing routine that handles copying the data into the display RAM buffer (on our larger Inky display this is backed by PSRAM). I don't believe there's a hard limit to the size of the JPEGs you can display. The main bottlenecks are decoding time and the relatively limited scaling options: FULL, HALF, QUARTER, EIGHTH. This aside, the authors solution is actually quite elegant. As long as you have control over the image pipeline there's no real reason to encumber the device with handling large (both in bytes and pixel dimensions) files. You'll also get much better dithering results writing your own routine to convert files from JPG to the raw 4-bits per pixel format for the display. Our built-in dithering is just a plain ordered dither matrix and, while quaint and retro, it leaves much to be desired visually. If you're trying to use a public API you can also make GitHub actions automate the whole image conversion process and publish the results to GitHub pages. This works great for, for example, the daily XKCD, serving both to reformat the strip for the display, credit the author, extract the "alt" text and avoid excess requests to the origin. Eg: https://pimoroni.github.io/feed2image/xkcd-800x480-daily.jpg https://pimoroni.github.io/feed2image/xkcd-800x480-daily.jpg. Though the astute will notice I still opted for jpeg in this case.