image-archive
A visual-discovery service with billions of pinned images, which often preserve copies of pictures whose original sources have vanished. There is no public image-search API — the official one is OAuth-gated for approved business apps — and casual browsing hits login walls, so use it by direct link. Occasionally useful for finding a surviving copy of an image lost from its original site.
No programmatic check — opens the archive’s own search.
Why it’s useful & how it works
Login walls/captcha on browsing; no usable public search API. Link-only.
What’s inside
Billions of pins.
API access
https://api.pinterest.com/v5/ (OAuth, business-app approval; no public image search)
An API key is required — usually free; see the endpoints above for where to get one.
Access
May be geo- or IP-blocked from some networks.