The header logo was a 256 px compressed raster whose navy chip vanished on the indigo bar. The chip is now an SVG, white with the glyph cut out, and the favicon set (SVG, 32 px and an opaque 180 px touch icon) comes from scripts/make_site_icons.py.
scripts/sitediagrams.py writes the explainer, install flow, verification modes, MinUI card, pipeline and data layer diagrams as inline SVG from the registry, the platform files, the install manifests and the pipeline step list. A page asks for one with an image comment, which the decoration pass resolves. The two mermaid diagrams of the architecture page are replaced, so no page loads mermaid from unpkg.
Platform logos and system icons are copied once by fetch_site_images.py with their source and owner recorded, and the build rewrites the remote links to the copies. validate_site refuses an image from another host. Three registry logos named a personal avatar instead of the project's (RomM, ROCKNIX, MiSTer FPGA) and MyMinUI's was a GitHub identicon, now dropped.
One 1200x630 sharing card per section, a 404 page with search and the two entry pages, and a list of screenshots that need a real device.
Links to this site get shared on Discord, Reddit and forums, where a
page with no Open Graph tags renders as a grey rectangle. The pages
already carry a per-page title and description, so a theme override
fills the tags from those; mkdocs-material would otherwise only emit
them through its social plugin, which pulls in Pillow and CairoSVG to
render a preview image these pages do not need.
Abdessamad Derraz