The Whole Book Screensaver
The Whole Book screensaver ranks every pair Gemini lists — several hundred of them — by how far each has moved in the last day. Most exchange displays show five majors; this shows the entire listed book. It runs in the browser with nothing to install; press ESC to exit.
How the The Whole Book screensaver works
The saver reads Gemini's public price feed, key-free.
No account and no key: the request goes straight from your browser, or from this site's own refreshed copy of the feed where the source does not permit browser access.
Values are drawn on a canvas that resizes with the window, so it works on a laptop or a wall display.
If the source is unreachable the saver says so on screen rather than showing stale numbers as though they were current.
A worked example
Sixteen pairs sorted by the size of their move, up or down, with the percentage and current price alongside. The tail is the point: below the handful of names everyone recognises sit dozens of tokens that moved ten per cent this morning while nobody was looking. Pairs reporting exactly zero change are dropped, because a missing reading and a genuinely flat price are different things.
Settings & tips
- Accent and Background recolour the display without changing the data.
- Add it to a Multi-view grid to watch it alongside other live savers.
- Press ESC at any time to leave fullscreen.
Frequently asked questions
- Why show the whole book instead of the majors?
- Because the majors are where the least happens. The largest assets are the least volatile in percentage terms, so a list of them systematically hides the days biggest moves.
- Does a big move mean something happened?
- Not necessarily. On thin books a modest order can move the price a long way. Percentage change on its own says nothing about how much was actually traded.
- Is this real data?
- Yes. It comes from Gemini's public price feed, key-free. Nothing is invented or simulated, and if the source cannot be reached the saver reports that instead of drawing something plausible.
- Does it cost anything or need an account?
- No. Every screensaver here is free, runs in the browser and needs no sign-up. This one uses a public API that requires no key.