GrandPerspective-style treemaps for the web and disk usage visualizer
I like treemaps for visualizing hierarchical mass and density of resource usage. I've always particularly loved GrandPerspective's dense, colorful rendering, but haven't found a similar but generalized treemap that works in reactive web views across many data visualization contexts. So I built gp-treemap, a canvas-based web component that renders GP-style treemaps with millions of nodes: https://github.com/imbue-ai/gp-treemap/ If you want to give it a spin, try something like this command to visualize hierarchical disk usage: npx -p @imbue-ai/gp-treemap gpdu…
GrandPerspective-style treemaps for the web and disk usage visualizer launched on April 29, 2026 with 5 votes, #1,846 of 21,248 launches that month and more than 75% of that year's launches.
What it does
Think of a treemap as a pie chart, but with hierarchy — every slice has its own pie-chart breakdown inside it, and so on, all the way down. Nested rectangles stand in for slices, each sized in proportion to a numeric value, so the whole distribution — and the relative weight of every part at every level — is visible at a glance. A hat tip to GrandPerspective , the classic macOS disk-usage viewer whose dense, label-free mosaic inspired gp-treemap's visual style. Below: interactive sample visualizations built with gp-treemap . Each entry is a self-contained HTML file — bundle and dataset are inlined, so they render from any URL (or file:// ) with no server. See also: Three treemap libraries,…from imbue-ai.github.io
In the maker’s words, at launch
I like treemaps for visualizing hierarchical mass and density of resource usage. I've always particularly loved GrandPerspective's dense, colorful rendering, but haven't found a similar but generalized treemap that works in reactive web views across many data visualization contexts. So I built gp-treemap, a…
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