dygraphs
dygraphs: A focused, open-source library for interactive time-series line charts in web pages. Ranked #21 of 24 in Data Visualization Libraries Software by our editors (6.6/10); pricing: Free plan; best for web developers charting time-series data.
At a glance
- Editor score6.6 / 10
- PricingFree plan
- Best forWeb developers charting time-series data
- Free planYes
- Paid fromFree
- Supported frameworksJavaScript
- Facts checked24 Sep 2026
Where it wins
- Adds zooming, panning, and range selection to time-series charts
- Lets viewers inspect data with mouseover interactions
- Supports multiple series on one chart
Where it doesn't
- Limited to time-series line charts
- Requires developers to integrate it into a web application
- Not a hosted analytics service
Our verdict on dygraphs
For developers adding time-series visualizations to web pages, dygraphs provides a focused JavaScript charting library rather than a hosted analytics service. It renders time-series line charts on canvas and is open source, with no paid plan required. The fit is strongest when a web application needs interactive exploration of time-based data, not a general-purpose chart suite.
Its interaction set is specific and useful for exploring plotted data: viewers can zoom and pan, select a range, and inspect values on mouseover. Multiple series can appear on one chart, making comparisons within a time series visualization possible. The library is described as designed to handle large datasets, though that description does not establish a particular performance level. Documentation covers chart configuration and interaction features, which makes implementation-oriented documentation part of the offering.
The trade-off is scope. dygraphs is limited to time-series line charts, so teams seeking other chart types or a hosted analytics workflow should look elsewhere. It is intended for developers building visualizations into web applications, which means it is less suited to buyers who want a standalone analytics product. Choose it when an open-source JavaScript library with interactive time-series exploration is the right building block; choose a broader visualization product when chart variety or a hosted service matters more.
Your product? Our editors can test dygraphs in depth and publish a review, labelled as paid · from $149/mo →
dygraphs pricing
dygraphs fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Supported frameworks | JavaScript |
| Chart types | time-series line charts |
| Rendering modes | Canvas |
| Interactive features | zooming, panning, range selection, mouseover data inspection |
| Export formats | Not verified |
| License model | Open-source |
| Deployment | Cloud |
| Platforms | Web |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | dygraphs.com |
| Facts checked | 24 Sep 2026 |
Alternatives to dygraphs
- PlotlyA broad, open-source toolkit for interactive charts, maps, dashboards, and data apps.9.3
- MatplotlibA free, mature Python plotting library for publication-quality charts and figures.9.1
- Apache EChartsA flexible, license-free JavaScript library for interactive charts in web applications.9.0
See all dygraphs alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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