To change size or quality, open the IPFS link in a separate window and append to its url a string like &quality=400&tiles=9,16. You may notice two parameters in it: quality and tiles.

quality is an integer from 1 to ~1000, the better the quality — the slower the rendering. Default is 200.

tiles is a number of 256×256 px tiles to render. Can be an integer (for square images) or two integers separated with a comma (for rectangular). tiles=9,16 will make an image with width of 9×256 px = 2304 px and height of 16×256 px = 4096 px. If not set, adapts to screen size.

Press s to save the image.