QuickChart
Utilities No key
AuthenticationNo key
Rate limitNo key; 60 charts per minute on the free tier.
Documentation: quickchart.io ยท Checked Sep 13, 2026
About
QuickChart turns a short description into chart images: bar, line, pie, radar, and more - plus QR codes and even Graphviz diagrams. Everything works through plain URLs with no key, so you can embed live charts anywhere.
Details
No key needed. You can call it right away.
Auth: No key
Rate limit: No key; 60 charts per minute on the free tier.
Verified: 2026-09-13
Best for: charts qr-codes images
Setup
- Read the docs at https://quickchart.io/documentation/.
- QR code: https://quickchart.io/qr?text=Hello+World&size=200.
- Chart: https://quickchart.io/chart?c={type:'bar',data:{labels:['A','B'],datasets:[{data:[1,2]}]}}.
- Use the 'chart' builder on their site to design without coding.
- Embed the URL in an <img> tag - no key needed.
Example
https://quickchart.io/qr?text=https://example.com&size=200Use cases
- QR codes for menus, tickets, and Wi-Fi sharing
- Charts in reports, emails, and dashboards
- Graphs in chat bots and notifications