Order flow · DOM
Free depth of market (DOM): a live order book ladder in your browser
Swiftedge Terminal has a free live DOM: the order book as a price ladder, asks above the price and bids below, with the size waiting at every level and a bar to compare them. It runs in your browser next to the tape, the chart and the order book heatmap, with no account and no download. It is a view of the book, not a trading DOM: Swiftedge places no orders.
Open it nowSwiftedge Terminal: the order book ladder, the tape, the chart, the heatmap and the footprint on one screen. Free, no sign-up.
Open Swiftedge TerminalWhat a DOM shows
Depth of market, or DOM, is the order book drawn as a ladder of prices. Each row is one price. On the ask side, above the current price, are limit orders waiting to sell; on the bid side, below it, limit orders waiting to buy. The number in each row is how much is resting there. When a market order arrives it trades against the best price on the other side, and the price moves when that level runs out.
A DOM answers one question at a glance: how much is waiting at each price right now? Large rows near the price are the liquidity walls traders watch. A DOM only shows the present moment; to see how the book changed over time, use the order book heatmap.
The DOM in Swiftedge Terminal
| Setting or detail | What it does |
|---|---|
| Levels per side | Auto (as many as the panel can show, from 6 to 40) or a fixed 10, 20 or 40 |
| Price grouping | ×1, ×2, ×5, ×10 or ×25 of the market's tick, to see larger blocks of liquidity |
| Size bars | Per level, or cumulative depth (the running total from the price outwards) |
| Mid row | The mid price, coloured by its last move, and the share of the shown size that is on the bid side |
| Marks | Click a price to mark it on the chart with its size; click again to remove it |
| Updates | Redrawn several times a second from the live book |
| Markets | The Bitcoin, gold, Ethereum, Solana, XRP, US 500, US 100, silver and WTI crude oil perpetual futures, each with its own Terminal |
Open it at swiftedge.uk/terminal: the DOM is one of the panels in the standard layout. Layout L3 (Order flow) puts the chart, the DOM, the tape and liquidations side by side, and you can type DOM in the command line to bring it up. On a phone the DOM is the Book tab at the bottom of the screen. Settings are under F2 (or type SET).
DOM or order book heatmap?
| DOM (Terminal) | Order book heatmap (Depth) | |
|---|---|---|
| Shows | The book now, as numbers per price | The book over time, as colour per price |
| Best for | Exact sizes near the price | When a wall appeared, how long it stood, and whether it was filled or pulled |
| History | None: it is the present moment | At least the last 24 hours |
| Trades | Next to it on the tape | Drawn on top as bubbles |
Most traders use both: the heatmap to find the levels that matter, the DOM to read the exact size when the price gets there. Swiftedge Depth is the heatmap; the Terminal's time and sales panel shows the trades that hit the book.
What this DOM does not do
- No order entry. You cannot click the ladder to buy or sell. For a trading DOM you need a platform connected to a broker or exchange; the order flow platforms comparison shows which ones have it.
- No exchange-listed futures. The US 500, US 100, gold, silver and WTI crude oil markets are perpetual futures, not the CME contracts.
- Its own markets only. The ladder is the perpetual futures book Swiftedge records for each market, not every venue.
Common questions
Is there a free DOM for crypto?
Yes. Swiftedge Terminal has a live DOM (order book ladder) for every market it covers, free in the browser with no account. It shows the book; it does not place orders.
Can I trade from the Swiftedge DOM?
No. Swiftedge is a view of the market and places no orders. A trading DOM needs a platform connected to your broker or exchange.
How many price levels does it show?
As many as the panel can show, from 6 to 40 per side, or a fixed 10, 20 or 40. Price grouping from ×1 to ×25 shows more of the book in the same rows.
What is the difference between a DOM and an order book heatmap?
A DOM is the order book at this moment, as numbers per price. A heatmap draws the order book over time, so you can see how long each level has been there. Swiftedge has both: the DOM in Terminal and the heatmap in Depth.
Which data does Swiftedge use?
Public perpetual futures data from Hyperliquid and Lighter: the order book and every trade with its aggressor side. Everything shown is Swiftedge's own calculation; the FAQ lists the sources.