Readme typing SVG vs Screenshotlayer

Readme Typing SVG renders an animated typewriter-effect SVG from a `lines` query parameter, meant to be dropped straight into a GitHub profile README or repo as an `<img>` tag — no signup or key required. Query options control font, colors, size, typing speed, and pause duration, and a hosted demo page lets you preview and copy the generated markdown live. The service is open source (DenverCoder1 on GitHub) and runs on a Heroku-backed host behind Cloudflare.

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.