Camo
An http proxy to route images through SSL
Camo is a lightweight Node.js HTTP proxy that serves insecure (HTTP) images over HTTPS, eliminating mixed-content warnings on secure webpages. It authenticates request URLs via HMAC, allowing admins to cache-bust or block content, and supports whitelisting by MIME type. Originally built by atmos for GitHub comments, it's now archived but continues to be used and forked (e.g., camo.cr).