Each card calls a real endpoint. origin is the byte count this server produced (X-Original-Bytes); delivered is what your browser received. delivered < origin means the edge transformed it.
Auto-minify (JS / CSS)
These files are padded with comments and whitespace on purpose. Heimwall auto-minify strips them, so the delivered bytes drop far below the original.
0% reduction means you are hitting the origin directly (no edge) or the feature is off for this domain.
Image optimization
The origin generates an unoptimized, noisy image on the fly. Heimwall's image optimizer re-encodes / lowers quality / converts to WebP — delivered drops while the picture looks the same.
0% reduction means you are hitting the origin directly (no edge) or the feature is off for this domain.
Cache by content-type
Heimwall's Standard cache stores static content by extension (images, JS, CSS, fonts), and always fetches HTML fresh from the origin.
| Type | Cache-Control | Edge cache | |
|---|---|---|---|
.js | public, max-age=300 | cached (static) | test |
.css | public, max-age=300 | cached (static) | test |
.jpg | public, max-age=300 | cached (static) | test |
.png | public, max-age=300 | cached (static) | test |
.svg | public, max-age=300 | cached (static) | test |
.html | (none) | fresh from origin | test |
(api) | no-store | fresh from origin | test |
HTTP protocol
A reverse proxy terminates the client connection and opens its own to the origin, so this server sees the edge→origin hop (often HTTP/1.1) even when your browser speaks HTTP/3. The client→edge value is read in your browser via the Performance API.
| HTTP (edge→origin) | HTTP/1.1 |
|---|---|
| HTTP (client→edge) | — |