Nerd mode
Nerd facts
Gerdsken - Beachfront panorama
A little machinery behind this page: photo and zoom.
What loaded
Open a view to see what actually loaded.
Photos
Small first. Sharper AVIF, WebP, or JPEG when the browser and screen can use them.
The fallback is just an image. That is the point.
AVIF · WebP · JPEG
Deep zoom
Deep zoom is for giant still images. The image is cut into tiles, and the viewer loads the visible pieces at the zoom level you need.
That keeps huge stitches inspectable without making normal browsing pay the full cost.
Deep Zoom · DZI in OpenSeadragon
HDR photo files
"HDR" means high dynamic range: more room for bright highlights and dark detail than a normal SDR image. It is a display and encoding promise, not a magic quality button.
The normal photo path stays SDR AVIF, WebP, and JPEG. A few posts also have opt-in P3 or HDR AVIF files here, including gain-map versions for software that understands them.
If the browser, operating system, or screen ignores the extra data, nothing dramatic happens. The ordinary photo is still the safe view.
HDR · PQ · Display P3 · AVIF HDR and gain maps · Gain-map idea
Why choices exist
One file does not fit every screen and connection. Browse stays light; inspect spends more when you ask.
