# leeoniya/uPlot

📈 A small, fast chart for time series, lines, areas, ohlc & bars

Repository: https://github.com/leeoniya/uPlot
Canonical: https://ross.abutalabs.com/products/uplot
Language: JavaScript
License: MIT
License Family: permissive
Topics: time-series, ohlc, line-chart, performance, lightweight, plotting, graphs, charts, streaming, analytics, plot, data-visualization, chart, graph, timeseries, trend-analysis
Last push: 2026-04-22T01:06:38+00:00

## Health v2 (maintenance only)
Score: 61/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 78, release rhythm 16, longevity 100
- inputs: {"age_days": 2532, "days_push": 134, "days_rel": 537, "gap_med": 166, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 10452, forks 459 (observed 2026-08-28T04:10:42.021069+00:00)

## What it is
uPlot is a small (~50 KB) and fast Canvas 2D-based JavaScript charting library for time series, lines, areas, OHLC, and bar charts. It renders hundreds of thousands of points in milliseconds with best-in-class zoom and cursor performance, and supports live data streaming at 60fps.

## Use cases
- plot large time series datasets in the browser
- render financial OHLC candlestick charts
- stream live sensor data to a chart at 60fps
- add lightweight charts to a dashboard without heavy dependencies
- visualize millions of data points with fast zoom and pan
- sync cursors across multiple charts

## When to choose
- you need the smallest and fastest time series charting library
- you're plotting very large datasets (100k+ points) where Chart.js or ECharts are too slow
- you want low CPU/memory usage for live streaming updates
- bundle size is a priority

## When to avoid
- you need WebGL-level performance beyond ~100k in-view streaming points
- you need many chart types like pie, donut, or heatmaps
- you want a batteries-included charting library with extensive built-in styling and theming
- you need 3D or geographic plotting

## Facets
- artifact type: library
- maturity: stable
- function: data-visualization, charts
- domain: data-visualization, analytics, frontend, web-development
- platform: browser
- tags: time-series, canvas, lightweight, performance, ohlc, streaming-data, charting, javascript

## Member repositories
- leeoniya/uPlot (main) score 61

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:42.021069+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:19:01.251691+00:00, confidence not recorded.
  - readme: https://github.com/leeoniya/uPlot (fetched 2026-08-28T04:10:42.021069+00:00, sha 57cd469971e9)
  - registry_npm: https://registry.npmjs.org/uplot (fetched 2026-08-29T08:18:18.685627+00:00, sha d104dc3d0602)
- Data as of 2026-08-30T08:39:29.467469+00:00.