Turn data into image charts for emails, reports, and chatbots
ChartURL is an API service that converts JSON data into rendered chart images via a single URL. Built as a drop-in alternative to the retired Google Image Charts API, it powers charts in transactional emails, Slack bots, mobile apps, and anywhere you need a picture instead of interactive JavaScript.
POST JSON data and receive a signed URL that serves a PNG chart — cacheable, shareable, and email-safe.
Design charts once in the web builder, then swap data via API call to reuse the same visual style.
Post charts directly to Slack channels or chatbot responses by returning image URLs in webhook payloads.
Embed per-recipient charts in HTML email with merge-tagged data for Mailchimp, Customer.io, SendGrid, etc.
Override titles, axes, colors, and series via query string so one template serves many use cases.
Line, bar, pie, scatter, stacked, area, and combo charts with customizable legends, labels, and tooltips.
Enterprise tier supports running the renderer on your own infrastructure for data-sensitive workloads.
Send weekly performance summaries or account analytics with a unique chart baked into each recipient's email.
Have a bot respond to `/metrics` with an inline chart image pulled from your database in real time.
Generate chart images server-side to embed in PDFs, invoices, or mailed reports without browser rendering.
Output renders identically in Gmail, Outlook, iOS Mail, and any client that accepts PNG images.

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