Free Polar Area Chart API
Generate polar area chart images with a single HTTP request. ChartQuery returns publication-ready PNG or SVG output that works everywhere, dashboards, emails, PDFs, print, and more. No frontend library required.
Live Preview
This image is generated in real time by the ChartQuery API, no static assets.
Quick Start
A single HTTP request is all you need. No SDK, no dependencies.
curl -X POST https://api.chartquery.com/v1/chart \
-H "Content-Type: application/json" \
-d '{
"type": "polarArea",
"title": "Polar Area Chart Example",
"data": {
"labels": [
"Jan",
"Feb",
"Mar",
"Apr"
],
"datasets": [
{
"label": "Series A",
"data": [
42,
58,
37,
65
],
"backgroundColor": "#6366f1"
}
]
}
}' \
--output chart.pngHow It Works
Send a Request
POST a JSON body or use GET with query parameters. No SDK or library needed.
Get Your Image
ChartQuery renders your chart, diagram, barcode, QR code, or label and returns it as PNG or SVG.
Use It Anywhere
Embed in emails, PDFs, dashboards, documents, or print directly. Works everywhere images work.
Features
Any Chart Type
Bar, line, area, pie, doughnut, radar, polar area, bubble, scatter, and mixed, all from one endpoint.
Pixel-Perfect Output
Get crisp PNG for emails and PDFs, or infinitely scalable SVG for web and print. Up to 4K resolution.
Full Customization
Control colors, fonts, legends, axes, tooltips, and every visual detail through a simple JSON config.
Share & Embed
Save charts with shareable URLs. Embed as images or interactive iframes, no authentication needed for viewers.
Use Cases
- Automated email and PDF reports with embedded charts
- Real-time dashboards and data visualization
- AI chatbot responses with visual data
- Social media and marketing graphics
Frequently Asked Questions
What is the ChartQuery Polar Area Chart API?
The ChartQuery Polar Area Chart API lets you generate polar area chart images via a simple HTTP request. Send a JSON configuration and receive a rendered PNG or SVG image in the response. No frontend library, no browser, no dependencies required.
How do I use a polar area chart with an API?
Send a POST request to the ChartQuery chart endpoint with your data as JSON. The API returns a rendered image directly. You can also use GET requests with URL parameters for simple cases. No API key is required for basic usage, anonymous access is available with 60 requests per hour.
What output formats does the Polar Area Chart API support?
PNG (default) and SVG. PNG is ideal for emails, PDFs, and messaging. SVG is lossless and infinitely scalable, perfect for web and print.
Is the Polar Area Chart API free to use?
Yes. The ChartQuery Polar Area Chart API works without an API key. Anonymous access is rate-limited to 60 requests per hour and adds a small watermark. Authenticated users on paid plans get higher limits, no watermark, and longer chart persistence (6 months vs 3 days for shared URLs).
Can I customize the polar area chart appearance?
Yes. You have full control over colors, fonts, sizes, backgrounds, legends, and every visual property through the JSON configuration. The API uses Chart.js v4 for charts, and supports all native options for fine-grained customization.
Can I share and embed charts generated by the API?
Yes. Add "share": true to any request to get permanent URLs. The render_url is a direct image URL you can embed in emails, documents, or <img> tags. The view_url is an interactive HTML page you can embed as an iframe. No authentication needed for viewers.
Related APIs
Start generating charts today
No API key required to get started. Generate charts, diagrams, and more with a single HTTP request.
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