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What the site shows, where to find it, and how to read a coin’s prices in a minute. It’s free, with nothing to sign up for.

The exchange switch in the header picks the exchanges every page compares. Four are on to start with; add any of the others, or every one a page can show.

Find a coin, in the header of every page, finds a coin by its ticker or its name, and an exchange by its name. Press / to reach it from anywhere.

Every page works on a phone. The header turns into a row of buttons, and the scoreboards and Signals are a button away, over each index’s table.

Why an exchange can stay on Connecting, say No reply or Couldn’t load, or turn you away, and what you can do about each.

When an exchange goes quiet, the pages grey its prices, then take them off the table, rather than show an old price as new. Here’s when that happens, and why.

The site compares the middle of each order book, converts stablecoins and currencies at live rates, and shows each price as it arrives. Any of these can make a figure differ from the exchange’s.

A coin gets its page once two of the exchanges the pages are built from list it. Most exchanges are off until you switch them on, and some can’t be read from a browser at all.

Each exchange you have on is a connection of its own, and some pages read every exchange. Fewer exchanges and fewer open tabs make a page lighter.

A coin’s page puts every exchange’s price side by side: the middle of each order book, the spread, the depth, what a market order would really get, and the books merged into one.

Every word and dot the pages put beside an exchange or a price, and the rule behind each one: Live, Behind, No reply, Thin, Low volume, Quote, Closed and the rest.

The scoreboards rank every exchange against the others on the markets they share: how often each has the best price, how far behind it usually is, and its funding.

Perpetuals pass funding between longs and shorts. The site writes every exchange’s rate as a rate a year, so hourly and 8-hourly exchanges compare directly.

The futures and options pages compare options by their implied volatility and dated futures by their premium a year, across the exchanges that list them.

Signals lists where two exchanges are apart on a price by more than it costs to trade both sides, on spot, perpetuals, and futures and options.

What each of Settings’ choices does: language, currency, theme, price colours, flashing prices, compact coin pages, page introductions, shortcuts and Reset everything.

Local currency conversion, in Settings, writes the site’s amounts in euros, pounds, Canadian or Australian dollars or Swiss francs, at Kraken’s live rate.

The site is in seven languages, each at its own address. Choose yours in Settings, or take the offer of the page in your browser’s language.

Tell the Trade simulator your trading volume on each exchange and it takes fees at your tier. Signals and the spot scoreboard can use the same tiers.

Signals can tell you with your browser’s own notification when a new gap opens after fees, while its page is open. Most phones’ browsers show none.

The address follows what you choose on an index, a scoreboard or Signals, such as a side or a sort, so the address you copy opens the page as you see it.

Press / to find a coin from anywhere, T to switch between light and dark, and Space to pause a coin page’s live prices.

Report a wrong number, in every page’s footer, starts a post to @coinsmash_ on X with the page’s address in it. Send it from the page that’s wrong, and say what you saw.

Every way to reach the site runs through X: a report of a wrong number, feedback and feature requests, and the site’s own news.

The site never messages you first, never asks for keys, seed phrases, passwords or money, and has two accounts, both on X. Anyone else is someone else.