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Cell Value Heatmap

The Cell Value Heatmap tool formats cell backgrounds as a heatmap based on their values, helping you visualize data patterns and identify trends at a glance.


  1. Select your range Select the cells you want to visualize. This tool uses your current selection (explicit helper text is shown in the panel).

  2. Open the Cell Value Heatmap feature Navigate through the Google Workspace™ menu: Extensions > Text To Table Converter > Mega Tools > Cell Value Heatmap.

  3. Choose color scheme Click the caret button to expand the color scheme options:

    • Stoplight - Red → Yellow → Green gradient
    • Blue → White → Red - Blue to white to red gradient
    • Custom - Enable min/max color pickers for custom gradients
  4. Configure custom colors (if selected) If you chose “Custom”:

    • Min color picker - Color for minimum values
    • Max color picker - Color for maximum values
    • Colors are interpolated between min and max
  5. Apply heatmap Click the “Apply” button to format cells with the heatmap colors. A status message appears in the panel confirming the operation.


  • Values are mapped across the gradient based on their position between min and max
  • Minimum value gets the “min” color
  • Maximum value gets the “max” color
  • Values in between are interpolated
  • Text cells will be sorted A→Z by first character (case-insensitive)
  • Mapped across the gradient based on their alphabetical position
  • Errors and empty cells remain unformatted
  • Currently ignores non-numeric cells
  • Only numeric cells receive heatmap formatting
  • Errors and empty cells stay unformatted

  • Red - Lowest values
  • Yellow - Middle values
  • Green - Highest values

Perfect for performance metrics, scores, or any data where you want to see “good” vs “bad” at a glance.

  • Blue - Lowest values
  • White - Middle values
  • Red - Highest values

Great for temperature data, deviations from average, or any data with a neutral midpoint.

  • Choose your own min and max colors
  • Colors are smoothly interpolated between your choices
  • Perfect for brand colors or specific visual requirements

  • Data analysis - Quickly identify high and low values in datasets
  • Performance tracking - Visualize metrics across teams or time periods
  • Financial analysis - Spot trends in revenue, expenses, or profits
  • Quality control - Identify outliers in manufacturing or test data
  • Sales data - See which products, regions, or periods perform best
  • Survey results - Visualize response patterns and distributions

If you have a range with values: 10, 25, 50, 75, 100

With a Stoplight scheme:

  • 10 (min) → Red
  • 25 → Red-Yellow blend
  • 50 (middle) → Yellow
  • 75 → Yellow-Green blend
  • 100 (max) → Green