Diagram for Audit API
Generate diagrams for audit firms and compliance reviews with a single API call. ChartQuery renders publication-ready images, PNG or SVG, that you can embed in dashboards, emails, reports, or print directly. No chart library to install, no frontend code to write.
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/diagram \
-H "Content-Type: application/json" \
-d '{"diagram_type":"mermaid","diagram_source":"graph TD\\n A[Start] --> B{Decision}\\n B -->|Yes| C[Process]\\n B -->|No| D[End]","output_format":"svg"}' \
--output diagram.svgHow 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
28 Diagram Languages
Mermaid, PlantUML, D2, GraphViz, and 24 more, all rendered through one unified API endpoint.
Multiple Output Formats
SVG (default), PNG, JPEG, and PDF output. Choose the best format for your use case.
Text-Based Input
Define diagrams as text, version-control friendly, easy to generate programmatically, and human-readable.
AI-Powered Generation
Describe your diagram in plain English and let AI pick the best language and layout for you.
Audit Use Cases
- Visualize audit findings and risk scores
- Generate document tracking barcodes
- Chart compliance rates across entities
- Create process flow diagrams
Frequently Asked Questions
What is a Diagram API for Audit?
A Diagram API for audit firms and compliance reviews lets you generate diagram images programmatically via HTTP requests. ChartQuery renders publication-ready PNG or SVG output that you can embed in dashboards, emails, reports, or print, without installing any chart library or writing frontend code.
How do I generate a diagram for audit with an API?
Send a POST request to the ChartQuery diagram 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 Diagram API support?
SVG (default), PNG, JPEG, and PDF. SVG output can be embedded directly in HTML and styled with CSS.
Is the Diagram API free to use?
Yes. The ChartQuery Diagram 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).
What are common diagram use cases in audit?
Visualize audit findings and risk scores. Generate document tracking barcodes. Chart compliance rates across entities. Create process flow diagrams. ChartQuery handles the rendering so you can focus on your data and business logic.
Can I share and embed diagrams 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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