Line Chart Generator
TextCreate line charts from CSV or JSON data. Multiple series, smooth curves, area fill. Download as PNG. ECharts-powered.
About Line Chart Generator
This line chart generator uses Apache ECharts to render CSV or JSON data as line charts locally. It supports multi-series comparison, smooth curves (Bezier interpolation), area fill, and custom mark points. Data input accepts CSV and JSON with a series array for multi-series charts. ECharts supports data zoom, tooltip hints, and legend filtering. Charts export as high-resolution PNG.
How to Use
- Open the Line Chart Generator tool page
- Enter or paste your data into the input area
- View the real-time results and use the copy button to get the output
Use Cases
- Stock price trends — Plot daily closing prices as line charts to intuitively show stock price trends and volatility.
- Temperature records — Visualize daily temperature data as line charts to compare trends across cities or years.
- Traffic monitoring — Plot hourly PV and UV data as line charts to monitor traffic changes and peak visits in real time.
- Multi-metric comparison — Overlay multiple data series in one line chart to compare trends across products or solutions.
- Experiment visualization — Plot experimental measurement data as line charts to show variable patterns over time or conditions.
FAQ
Can it draw smooth curves?
Yes. Enable the smooth curve option and ECharts uses Bezier interpolation to convert polylines into smooth curves, ideal for trend display.
Does it support multi-series comparison?
Yes. Add multiple series objects in JSON data; each series is drawn in a different color, overlaying multiple lines for comparison.
Can it fill areas?
Yes. Enable area fill to fill the region below the line with a gradient color, ideal for emphasizing cumulative data volume.
How do I input data?
CSV (first row as labels, subsequent rows as data) or JSON (with categories and series arrays). Choose as needed.
Is data uploaded?
No. All chart rendering runs locally via ECharts; data never leaves your device, safe for confidential business data.
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