Image info from a URL
Paste any image URL — PNG, JPEG, GIF, or WebP — to see its dimensions, format, MIME type, and file size. Nothing is uploaded; the URL is fetched once and inspected.
How it works
swiftimg fetches the first 64 KB of the URL server-side, reads the image header for width and height, takes the file size from the response's Content-Length header (when the origin sends one), and reports the detected format. No CORS hops, no JavaScript decode, no upload.
Need to host or transform images too?
swiftimg is image hosting and a fast delivery API — free to start, with an API on the Developer plan.