Architizer's upload rules are simple and they punish two opposite mistakes. Files must be JPEG or PNG, at least 1200 pixels wide, at 72 ppi or above, and under 10MB each. Upload too large and the file is rejected outright — a single 24MB TIFF-style render export blows the cap on its own. Upload too small and the image is below the width floor, which means either a rejection or an image that gets upscaled into softness on the project page. The trap is that Architizer resizes automatically and advises against images with borders, so the platform is already doing its own downscale; handing it an enormous file does not buy you a better result, it just makes the upload slow and risks the cap. There is also a format consideration: the same rules allow JPEG and PNG but not WebP, so a project library that has already been converted to WebP for a personal site needs a JPEG or PNG export for Architizer specifically. Skwish converts and compresses PNG, JPG and WebP in the browser, shows a before/after readout per file, and exports a ZIP so a full 8-15 image project can be prepared in one pass. Nothing is uploaded.