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Charts as images, by URL.

Send a Chart.js config, get a PNG back. Put it in an email, a PDF, a Slack message or your AI agent's reply, where JavaScript charts can't run.

Chart.js config (JSON){ "type": "bar", "data": { "labels": [ "Mon", "Tue", "Wed", "Thu", "Fri" ], "datasets": [ { "label": "Signups", "data": [ 12, 19, 7, 15, 22 ] } ] } }

Result

Use it anywhere an image works

<img src="https://chartpng.dev/chart?c=%7B%22type%22%3A%22bar%22%2C%22data%22%3A%7B%22labels%22%3A%5B%22Mon%22%2C%22Tue%22%2C%22Wed%22%2C%22Thu%22%2C%22Fri%22%5D%2C%22datasets%22%3A%5B%7B%22label%22%3A%22Signups%22%2C%22data%22%3A%5B12%2C19%2C7%2C15%2C22%5D%7D%5D%7D%7D" />

• Emails: Gmail and Outlook won't run JavaScript or SVG, but they show a PNG.
• AI agents: an agent that writes a report can link a chart without a browser.
• PDFs, Slack, Notion, Markdown: anything that accepts an image URL.
• Options: w and h (50-2000 px), dpr=2 for retina, bkg for the background. POST /chart with JSON for large configs.

Pricing