reverse-image
IQDB
A combined reverse-image search across the major booru image boards — Danbooru, Gelbooru, Zerochan and others — covering tens of millions of tagged anime-style images. You give it an image or URL and it checks all the services at once; output is plain HTML with no API. The quickest way to find the catalogued, tagged source of an anime image when SauceNAO leaves doubt.
Images
Search this archive
No programmatic check — opens the archive’s own search.
Why it’s useful & how it works
Works via proxy (direct errored). HTML-only, no JSON. Hand a link.
What’s inside
Tens of millions of booru images.
Access
Freely reachable — no key, login, or captcha.