Lorem Picsum vs Screenshotlayer

Lorem Picsum serves placeholder photos by encoding the size, and optionally a specific image ID or a seed, directly into the request URL — no signup or key required. Every photo comes from Unsplash's library, and query parameters can request a grayscale or blurred variant, a JPEG or WebP file extension, or a random cache-busting suffix for multiple images at one size. A companion /v2/list JSON endpoint returns the full photo catalog with author and dimension metadata for browsing before you hotlink.

Screenshotlayer (an APILayer product) is a REST API that renders any public URL into a PNG, JPEG, GIF, or WebP screenshot, with parameters for viewport size, full-page capture, and retina/2x scaling. A live GET against api.screenshotlayer.com/api/capture with a bogus access_key returns a 101 invalid_access_key JSON error rather than serving anonymously, proving every call requires a real key passed as the access_key query parameter — auth is corrected from "None" to "API Key". That same probe carried Access-Control-Allow-Origin: * even on the error response, resolving the stored "unknown" cors to "yes". screenshotlayer.com/pricing lists a Free plan alongside paid Basic/Professional/Business tiers billed annually — freemium.