BatchPNGTools
Multi-Format Support

Batch Heatmap Generator

Visualize pixel density and intensity across your image collection. Perfect for data analysis, thermal simulation, or creative effects.

Drop your images here

Supports PNG, JPG, WebP, AVIF and more. Process hundreds of files at once.

Try with Examples

Why Use Our Heatmap Generator?

Powerful visualization for density analysis and creative image processing.

Scientific Palettes

Choose from industry-standard color palettes like Jet, Viridis, and Magma. Map pixel intensity to precise color gradients for accurate visualization.

High Performance

Leverage local hardware acceleration to process large image batches instantly. No server uploads mean your data stays private and processing is lightning fast.

Bulk Export

Process hundreds of images in one go. Export your results as high-quality PNG, JPG, WebP, or AVIF files, individually or bundled in a single ZIP archive.

How to Generate Heatmaps in 3 Steps

1

Import Images

Upload your PNG, JPG, or WebP files. Our tool handles batch processing automatically for maximum productivity.

2

Customize Visualization

Select your preferred color palette, adjust smoothing (blur), and control opacity to highlight the density areas precisely.

3

Batch Export

Choose your output format and download all processed images as a single ZIP file or individually.

Frequently Asked Questions

What is an image heatmap?

An image heatmap is a data visualization technique that shows pixel density or intensity through a color gradient. It transforms a grayscale or color image into a "thermal" representation based on luminance.

Are my images uploaded to any server?

No. Our tool uses client-side JavaScript processing. Your images stay in your browser and are never uploaded, ensuring 100% privacy and security.

What color palettes are available?

We provide various scientific and creative palettes including Jet, Hot, Viridis, Magma, and Rainbow. Each is optimized for different types of density visualization.