The pages in the film are Demo Company's. Pages 5 and 7 show the third parties; open pages 8 to 12 beside their fixed twins and watch the Network panel.
The fixes: width and height on images; loading="lazy" below the fold; defer on scripts; alt text; a Content-Security-Policy header; integrity (with crossorigin) on scripts from other servers.
The narration is a synthetic voice (ElevenLabs). Timing follows the narration track, so a recorded voice-over can replace it cue for cue using the transcript.
With Reduce Motion turned on in the operating system, the film keeps its fades and drops the sliding motion.
Set in Atkinson Hyperlegible Next and Mono, typefaces the Braille Institute designed for readers with low vision.