Screenshotlayer vs Unsplash

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.

Unsplash's JSON API lets apps search, browse, and download from its library of freely licensed photos, returning dynamically resizable image URLs (powered by Imgix) alongside photographer and collection metadata. Nearly all real use is covered by a static Client-ID access key sent via the Authorization header — full OAuth is only needed for a handful of actions performed on a user's behalf, like liking a photo. New applications start in demo mode at 50 requests/hour and can apply for production approval to reach 1,000/hour, with attribution to the photographer and Unsplash required under the Unsplash API Guidelines.