jsdom vs happy-dom
Real installs, week by week
- jsdom
- happy-dom
- npm downloads (same color, dashed)
The 12-month chart is drawn in the browser from the npm API.
jsdom vs happy-dom: which is more popular?
| package | npm / week | real installs / week | noise | confidence |
|---|---|---|---|---|
| jsdom | 152,802,777 | 153M | under 1% | high |
| happy-dom | 32,986,411 | 33M | under 1% | high |
Noise: the share of npm's count that mirror spikes and crawlers account for. What remains still includes CI and dependency installs.
Snapshot from the daily build of Nov 6, 2026, last 7 days of npm data. With JavaScript on, this page recomputes it live with a 12-month chart.
By real installs, jsdom is ahead of happy-dom by about 4.6×: about 153M vs 33M a week. npm's raw counts are 152,802,777 for jsdom and 32,986,411 for happy-dom, which include mirrors, scanners and crawlers. Mirror spikes and crawlers removed. CI and dependency installs still count, so this is not a head count.
How the estimate works
- Cut the spike every new version gets from mirrors in its first days.
- Subtract the flat floor robots download from every version each week.
- Show what is left as a range, with a confidence level. It still includes CI and dependency installs, so it is not a count of people.