HTTP Dog vs RandomDog

http.dog serves a themed dog photo for most standard HTTP status codes (e.g. GET /200, /404, /451), following the same status-code-as-image idea as http.cat. A .json variant returns direct links to the same image in JPEG, WebP, AVIF, and JXL instead of the image itself. It's a static Cloudflare-fronted site with no server-side application logic, so there's no API key, authentication, or rate limit of any kind.

RandomDog's woof.json endpoint returns a JSON object with a file size and a direct URL to a random dog photo, GIF, or video clip from a donation-funded, community-submitted collection. A filter or include query parameter can exclude or restrict results to specific file extensions, such as skipping mp4 clips.