Online Line Chart Generator
LineTrendChart.jsSVG
Generate line charts instantly from label,value lines or CSV with header, smooth curves, point markers, Chart.js config export and SVG download, all local processing.
Data Input (label,value per line)
Supports header row like: label,value or Month,Sales,Profit for multi-series
Chart Config (JSON)
All processing is done locally, no upload. SVG fallback ensures preview without Chart.js.
Preview · line-chart
SVG preview (Chart.js not installed, JSON config available)📊
Enter data above and click Generate to preview
支持 label,value 多行 / CSV / JSON
Canvas (Chart.js) unavailable – SVG preview above is fallback
How to Use
- Paste any valid JSON, supports nesting, arrays and escapes
- Click Beautify to auto indent and format
- Click Minify to remove whitespace into one line
- All operations run locally for privacy
Related Tools
FAQ
How to input data?
One line per label,value like Jan,100; supports header CSV like label,value or Month,Sales,Profit for multi-series auto detection; also JSON.
How to generate and export?
Click Generate to preview SVG and Chart.js config JSON, copy config, copy SVG or download SVG; Canvas auto enables if chart.js installed.
Which formats are supported?
CSV (comma/semicolon/tab), quoted fields, JSON arrays/objects, numbers auto parsed, invalid lines flagged.
Will my data be uploaded?
No, all parsing, config generation and SVG rendering run locally, no upload.