Deterministic SVG/PNG/WebP avatars from any string, four styles.
Waldrand Avatar API is a free Test Data API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
A keyless GET that turns any string into a stable, unique avatar.
Details from avatar.waldrand.dev.

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The Waldrand Avatar API is provided by waldrand.dev (avatar.waldrand.dev). A keyless GET that turns any string into a stable, unique avatar.
Yes. The Waldrand Avatar API is listed in the Test Data category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Waldrand Avatar API requires no authentication, so you can start making requests without signing up.
Yes. The Waldrand Avatar API supports CORS, so front-end JavaScript can call it directly.
Yes. The Waldrand Avatar API is served over HTTPS, so it's safe to use in production.