What file types does the Data Visualization Tool support?

The tool supports CSV, Excel (XLSX and XLS), and JSON file uploads. You can also paste raw JSON directly or enter data manually in the spreadsheet-style editor.

Is my data safe and private?

Yes, 100%. All data parsing and chart rendering happens locally in your browser using JavaScript. No data is sent to any server. Your data never leaves your device.

Can I export my charts?

Yes. You can export charts as high-resolution PNG (2x pixel density), scalable SVG, or as a JSON configuration file for use in your own projects.

How large a dataset can I visualize?

The tool is optimized to handle 50,000+ row datasets. The data preview table paginates results for performance while charts render from the full dataset.

Free Online Data Visualization Tool – CSV, Excel & JSON Charts

Q: What chart types are available?

The tool supports Bar, Line, Area, Pie, and Donut charts in the current version. More chart types including Scatter, Heatmap, and Radar charts are planned for future updates.

Why Use the Data Visualization Tool?

Instantly turn raw data files into stunning, interactive charts — no coding, no signup, no server uploads.

100% Private

Your data never leaves your browser. All parsing and chart rendering happens locally — no servers involved.

Instant Charts

Upload a CSV or paste JSON and see beautiful charts in under a second. Powered by Apache ECharts.

Smart Suggestions

Auto-detects column types and recommends the best chart type — line for time series, bar for categories, etc.

Export Ready

Download your chart as high-resolution PNG, scalable SVG, or full JSON config for use in any project.

Multi-Format Input

Supports CSV, Excel (XLSX/XLS), JSON upload, raw JSON paste, and a spreadsheet-style manual data editor.

Filter & Sort

Search, filter by column, and sort your dataset in the interactive data table with full pagination support.

Chart Types Explained

Choose the right chart type for your data to tell the most compelling story.

Bar Chart

Best for comparing discrete categories. Ideal for sales by region, scores by student, or product performance.

Category vs Number

Line Chart

Perfect for time series and trends. Use when your X-axis contains dates, months, or sequential time periods.

Date vs Number

Area Chart

Like a line chart but with filled area below — great for showing volume over time or cumulative trends.

Multi-metric Trends

Pie Chart

Shows proportion of a whole. Use when you have a single numeric column and want to see percentage breakdown.

Distribution

Donut Chart

A variant of pie with a hollow center — cleaner look, especially when you want to display a summary metric in the center.

Distribution

Who Is This Tool For?

Developers

Visualize API JSON responses
Analyze logs and metrics data
Generate charts for documentation

Business Users

Sales and revenue dashboards
KPI trend analysis
Export charts for presentations

Students

Statistical assignment graphs
Research data visualization
Infographic creation

Analysts

Comparative trend analysis
Multi-column metric charts
Export-ready visualizations

Frequently Asked Questions

What file types are supported?

Is my data private?

How large a dataset can I use?

How do I export my chart?

What chart types are available?

Can I customize chart colors?

Can I save my session?

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Data Visualization Tool