Crypto Exchange Web Order Book Depth Overlay

WHAT IT DOES

Crypto Exchange Web Order Book Depth Overlay scans the current page for order book data from cryptocurrency exchange web interfaces (Binance, Coinbase, Kraken, etc.), extracting bids, asks, volumes, and price levels. The floating panel displays a visual order book depth chart with cumulative buy/sell volume, price levels, and spread analysis. Key metrics include bid-ask spread, order book imbalance, and support/resistance levels. Filter by price range and volume threshold, with real-time updates when data changes. Export order book data as CSV or JSON for analysis, with large orders and unusual activity highlighted.

WHERE IT RUNS

Works on any cryptocurrency exchange web interface, including Binance, Coinbase, Kraken, Bybit, OKX, and other trading platforms. The script detects order book data using common table and div selectors, and can also fall back to pattern matching on any page with structured price and volume data. It works best on exchange order book pages and trading interfaces.

HOW TO USE

The panel displays a depth chart showing cumulative bid (buy) and ask (sell) volumes across price levels. The chart updates when you click "Scan Order Book" or when the page data changes. Metrics show bid volume, ask volume, spread, spread percentage, and order book imbalance. Support and resistance levels are automatically identified from the nearest bid and ask levels. Export the order book data as CSV for analysis in spreadsheets. The chart area highlights the spread between best bid and best ask, and color-coded curves show buy and sell pressure.

MECHANISM — ORDER BOOK EXTRACTION WITH CUMULATIVE VOLUME CALCULATION

The script uses a multi-strategy approach to extract order book data. It first attempts to find tables and rows containing price and volume data using common exchange selectors. Bids and asks are identified by detecting keywords (bid/buy for bids, ask/sell for asks) or by analyzing price positions relative to the book's midpoint. For each bid and ask, the cumulative volume is calculated by summing volumes from the best price level outward. The depth chart is rendered using Canvas API with bid (green) and ask (red) cumulative curves. The spread is calculated as the difference between the best ask and best bid, and the order book imbalance is calculated as the ratio of bid volume to total volume. All extraction and rendering runs client-side with no network calls.

THE PANEL

The floating panel is fully draggable and remembers its position per domain. Click the minimize button to collapse it to a small bubble, or press Escape to hide it. The panel automatically adjusts to different screen sizes and can be resized to show more content. All settings, including display preferences, are saved per domain. The panel integrates smoothly with any page layout using the BGPanel framework, maintaining clean separation from page content.

PLEASE NOTE

This script requires the free BotGentz extension to run. It does not send any data to external servers; all extracted order book data and settings remain entirely local to your browser using GM_setValue. The script never reads password fields, hidden inputs, or file inputs. It stores only bid/ask prices, volumes, and cumulative data from publicly visible exchange page content. Order book extraction depends on the page structure; if data is not detected, use the "Scan Order Book" button to refresh extraction. The script provides analysis tools only and does not execute trades or access exchange APIs. Data persists across browser sessions and is isolated per browser profile.