reverse-image
Google Images / Lens
The world's largest reverse-image and visual search, with Lens adding object and text recognition. It is web-only — there is no public API — so you upload an image or paste a URL yourself. Still the default first move for identifying an image's origin, its subject, or other places it appears online.
Images captcha
Search this archive
No programmatic check — opens the archive’s own search.
Why it’s useful & how it works
Page via proxy; Lens upload flow JS-heavy + 'unusual traffic' captcha on DC IPs. No clean API. Hand a link.
What’s inside
Tens of billions of web images.
Access
May require solving a captcha before it responds.