Can i get arduino to display a image from a url on a LCD display?
I would like to make a basic slide show from image urls that change ever couple seconds.
i'm not sure what resources are available for rendering images with arduino on a LCD.
If you get an LCD graphics shield with an SD card then the slide show is one of the example sketches. However the files have to be in bmp format as there is not much processing to do for that format.
As said, jpeg is right out but you should be able to manage gif and png.
If the URLs point to usable graphics files (valid types have been pointed out), then you need to look at the size of the files. Measure how long it takes to download one of them. That will define your minimum time to display one slide. If that is short enough, great. Otherwise, downloading the images from URLs will not be a viable option.