plotly.js
The open source javascript graphing library that powers plotly
npm says
963,882
per week
Every tarball fetch: mirrors, scanners, CI and people.
real installs
high confidence≈ 962K–964K
per week
best guess 964K
Mirror spikes and crawlers removed. CI and dependency installs still count, so this is not a head count.
About 0% of npm's count looks like noise. noise real installs
Why this estimate
With JavaScript on, this lists what the filter found for this package.
Most used major version: 3, not the latest one, with 52% of last week's downloads above the crawler floor. Most used single version: 2.35.3.
Snapshot from the daily build of Nov 6, 2026, last 7 days of npm data. With JavaScript on, this page recomputes it live from the npm API.
How many people use plotly.js?
npm counted 963,882 downloads of plotly.js in the last 7 days. Nobody can count people exactly, npm included: it does not record who downloaded what. After removing mirror spikes and crawlers, about 962K–964K look like real installs. Noise is under 1% of npm's count. What remains still includes CI and installs as a dependency of other packages.
Is plotly.js still maintained?
Most likely yes, going by its releases. The latest version, 4.2.0, came out on Oct 29, 2026. The last 12 months saw 12 stable releases, typically 28 days apart, plus 1 pre-release. It was first published on Nov 17, 2015. npm lists 11 maintainers.
Is plotly.js still used?
Downloads with publish spikes removed are up 23% over 3 months and up 158% over 11 months. For scale, the median of the 269 packages we track, which lean towards today's most downloaded, is up 157% over 11 months, so this one is about level with that. Last week, 52% of downloads above the crawler floor were on major version 3, not the latest one; the most used single version was 2.35.3, with 16%. Weekdays get 2.0× the downloads of weekends, which fits people at work, though CI follows the same rhythm. Over the last 12 months, 93,034 downloads arrived in publish spikes and were attributed to mirrors. Crawlers account for about 273 downloads a week, roughly 1 per version.
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.