Why heatmap.js?
Because it is the most advanced heat map visualization library on the web.It has a light footprint (~3kB gzip) and with the new 2.0 release heatmap.js just got
- faster, with a new rendering module
- stronger, to handle even more datapoints (40k+)
- easier to use so you can get up to speed quickly
- easier to extend for custom functionality
A Quick Example
With only a few lines of code you can create your own interactive web heatmap:var heatmap = h337.create({
container: domElement
});
heatmap.setData({
max: 5,
data: [{ x: 10, y: 15, value: 5}, ...]
});
view more examplesheatmap.js' API is all documented - also prioritized: *hot docs* - so you can start developing right away! Have a look at the documentation.
Plugins
As heatmap.js is more or less actively developed and maintained on github, people have contributed some really useful plugins (especially for GIS developers) show all pluginsThroughout the last few years heatmap.js evolved to the next level.
What users say

"It's a great tool - super easy to work with, and gave us exactly what we needed"
- Chris Becker, Search Engine Architect at

"One to rule them all: Heatmap.js is great! Besides allowing us to make beautiful heatmaps, it also gives us independence to use different maps library, such as leaflet and google map."
- Rodrigo Saad, PhD. Eng. in HPC and System Dependability
Who is using heatmap.js
Lots of developers are already using heatmap.js and are happy with it, have a look at the showcases to see how it performs in the wild! more showcasesWhat heatmap.js is not
Heatmap.js is not a user behaviour tracking script.It simply creates dynamic heatmaps based on the data you feed it.
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