ChartQuery vs QuickChart
QuickChart renders charts via Chart.js. ChartQuery does that and much more: 28 diagram languages, AI generation, barcodes, QR codes, and labels, all from a single API.
Analysis based on publicly available information as of April 2026.
Feature-by-feature comparison
A detailed look at what each platform offers. ChartQuery covers every use case QuickChart handles, plus much more.
Charts
Diagrams
AI Generation
Barcodes & QR Codes
Labels
Platform & Infrastructure
What sets ChartQuery apart
ChartQuery is built for teams that need more than just charts. Here's what you get that QuickChart doesn't offer.
28 diagram languages
Render Mermaid, PlantUML, GraphViz, D2, and 24 other diagram languages as PNG or SVG. QuickChart only supports GraphViz.
AI-powered generation
Describe a chart or diagram in plain English. The AI configures and renders it, no JSON required. Send raw CSV or JSON data and get a visualization back.
Barcodes & QR codes
Generate Code128, EAN-13, UPC-A barcodes and customizable QR codes. QuickChart offers QR codes but no barcode formats.
Label generation
Create shipping and address labels via API. A unique capability that no chart-only service provides.
EU-native infrastructure
ChartQuery is built and hosted entirely in the EU. Data never crosses borders. QuickChart is US-based (San Mateo, CA) with EU servers. ChartQuery is EU-native from the ground up.
Sub-500ms response times
Most endpoints respond in under 500ms with a 99.95% uptime guarantee. Built for high-throughput production workloads.
Pricing comparison
Same price range, far more capabilities. ChartQuery's credits work across five APIs while QuickChart covers charts, QR codes, and GraphViz.
Free
No API key needed
- 60 req/hour per IP
- All 5 APIs included
- Watermark on images
- 3-day share link expiry
Starter
750,000 credits/month
- ~150,000 charts or ~75,000 AI gens
- No watermark
- 50 req/s rate limit
- Email support
- Charts + Diagrams + AI + Barcodes + Labels
Pro
3,000,000 credits/month
- ~600,000 charts or ~300,000 AI gens
- No watermark
- 200 req/s rate limit
- Priority support
- 99.95% uptime SLA
Community
Rate limited
- Rate limit enforced
- Charts, QR codes & GraphViz
- No watermarks
- AGPL v3 license
- Shared servers
Professional
100,000 images/month
- 100,000 images/month
- No watermarks
- URL shortener
- Priority support
- Charts, QR codes & GraphViz
Enterprise
Unlimited charts
- Unlimited renders
- Custom domain
- Dedicated account manager
- SLA available
- Charts, QR codes & GraphViz
Volume comparison
At comparable price points, ChartQuery delivers significantly more value.
One API, five capabilities
QuickChart handles charts, QR codes, and GraphViz diagrams. ChartQuery handles all of that plus 27 more diagram languages, AI generation, barcodes, and labels, all with a single API key.
// Charts via Chart.js + QR codes + GraphViz
const url = 'https://quickchart.io/chart?c='
+ encodeURIComponent(JSON.stringify({
type: 'bar',
data: {
labels: ['Q1', 'Q2', 'Q3'],
datasets: [{
label: 'Revenue',
data: [120, 200, 150]
}]
}
}));
// No AI, no barcodes, no labels// Charts
fetch('https://api.chartquery.com/v1/chart', {
method: 'POST',
headers: { 'x-api-key': 'YOUR_KEY' },
body: JSON.stringify({
type: 'bar',
data: { labels: ['Q1','Q2','Q3'],
datasets: [{ data: [120, 200, 150] }] }
})
});
// Diagrams (28 languages!)
fetch('https://api.chartquery.com/v1/diagram', {
body: JSON.stringify({
language: 'mermaid',
code: 'graph TD; A-->B; B-->C;'
})
});
// AI Generate
fetch('https://api.chartquery.com/v1/ai/chart', {
body: JSON.stringify({
prompt: 'A bar chart of Q1-Q4 revenue'
})
});Frequently asked questions
Can I migrate from QuickChart to ChartQuery?+
Yes. ChartQuery's chart API accepts a similar JSON configuration format. Most QuickChart integrations can be migrated by changing the endpoint URL and adding your API key. Our documentation includes a migration guide with examples.
Does ChartQuery support Chart.js configurations?+
ChartQuery uses its own optimized chart rendering engine that supports the same chart types and configuration patterns. You can use familiar properties like type, data, labels, datasets, and options.
What diagram languages does ChartQuery support?+
ChartQuery supports 28 diagram languages including Mermaid, PlantUML, GraphViz (DOT), D2, Structurizr, DBML, Pikchr, Bytefield, WaveDrom, Vega, Vega-Lite, and many more. Each can be rendered as PNG or SVG.
Is there a free tier?+
Yes. ChartQuery offers a free tier with 60 requests per hour per IP, no API key required. It includes all endpoints (charts, diagrams, AI, barcodes, labels) with a watermark on rendered images.
Where is ChartQuery hosted?+
ChartQuery infrastructure is hosted entirely within the European Union. All data processing happens in the EU and no data leaves EU borders. This makes ChartQuery fully GDPR compliant by design.
How does pricing compare?+
ChartQuery uses a credit-based pricing model starting at $49/month for 750,000 credits (~150,000 chart renders). QuickChart Professional costs £35/month for 100,000 images but only covers charts, QR codes, and GraphViz. With ChartQuery, your credits work across all five APIs: charts, diagrams, AI generation, barcodes, and labels.
Start generating charts today
No API key required to get started. Generate charts, diagrams, and more with a single HTTP request.
Get StartedView Pricing