Intraday Volume Spikes Heatmap

Hello friends,

Here's something truly special for intraday traders: this script identifies and visualizes abnormal volume activity clusters throughout the trading day, giving you an instant overview of when the market gets unusually active. It's designed specifically for intraday charts with volume data available.
No setups, no guesswork — just plug it in and see where volume truly spikes.

🛠 How It Works

The indicator divides the trading session into a 60×24 grid — minutes across the horizontal axis and hours down the vertical one.
It tracks each bar's volume (or price spread, or relative change — depending on your selected metric) and highlights the frequency of abnormal activity using a smooth color heatmap.
You can analyze the full chart history or focus on a specific date range.
All the data is neatly displayed in a customizable on-chart table, allowing you to instantly spot intraday periods with heightened trading activity.

🔥 Key Features

• Pine Script V6 — optimized and refactored for performance and maintainability
  
• Detects abnormal volume activity — instantly see where volume spikes most often within the day
  
• 4 analytical modes — Volume Amount, Volume % Change, High/Low Spread, and Price % Change
  
• Configurable analysis window — use entire chart history or a specific date range
  
• Overlay Mode — display the heatmap directly on your chart or in a separate panel
  
• Customizable appearance — fine-tune colors, borders, text, and layout
  
• 17 professional color palettes — including Viridis, Inferno, Magma, and Plasma
  
• Time zone offset support — align analysis with your local time if needed
  

📸 Visual Examples

Viridis palette

Inferno palette
If you'd like access or have any questions, feel free to reach out to me directly via DM.

👋 Good luck and happy trading!