A chart is just a URL.

Put one in an img tag, an email, a Google Sheets cell, a Slack message or a README, and a PNG comes back. No SDK, nothing to store.

Make a chartRead the docs

Free plan: 500 renders a monthCached requests don't count

Bar chart: revenue this week, Saturday highest at 7,400
Edit any value above. The chart redraws from the URL.

Try it yourself.

Change a value and the chart updates. The first request renders the chart; every request after that comes from cache and is free.

Separated by commas.
One number per label.
Up to 200 characters.
Chart built from the fields above

https://c.renderchart.com/?key=rc_pub_live_7Hq2mX9pLk4vN8sT1wEa&type=bar&x=Mon,Tue,Wed,Thu,Fri,Sat,Sun&y=4200,3900,5100,4800,6200,7400,5300&title=Revenue%20this%20week%20(%24)&values=1

600 x 400 PNG. Rendered once, then served from cache.

One URL, wherever an image goes.

Pick a place to see the line you'd paste. This is the chart from the form above.

<img src="https://c.renderchart.com/?key=rc_pub_live_7Hq2mX9pLk4vN8sT1wEa&type=bar&x=Mon,Tue,Wed,Thu,Fri,Sat,Sun&y=4200,3900,5100,4800,6200,7400,5300&title=Revenue%20this%20week%20(%24)&values=1"
     width="600" height="400" alt="Revenue this week">

What happens after you paste it.

You pay for unique renders. Opening the same chart again costs nothing.

Cached by default

The first request draws the chart. Every request after it is served from cache and is free.

Paid charts never break

Over your plan's renders, charts keep rendering and we email you.

Signed when it matters

Unsigned URLs carry a small watermark. Sign them on a paid plan and it's gone. Short URLs hide your key and data, and on Pro they stay live.

Pay for renders, not views.

The allowance is monthly on either interval. Compare plans

Free

$0a month

500 renders a month

Charts carry a small watermark.

  • Watermarked
  • PNG
  • Rate-limited
Start free

Starter

$20.30a month

$203a year

10,000 renders a month

Billed monthly.

Billed yearly. 2 months free. The allowance is still monthly.

  • No watermark on signed URLs
  • Signed URLs
  • Short URLs
  • MCP server for AI assistants
  • REST API
Choose Starter

Pro

$55.30a month

$553a year

100,000 renders a month

Billed monthly.

Billed yearly. 2 months free. The allowance is still monthly.

  • Everything in Starter
  • Brand themes
  • Live short URLs
  • PDF output
  • Custom domain, coming soon
Choose Pro

Charts in AI replies.

An MCP server lets Claude, ChatGPT and Cursor write the chart URL for you, so the chart lands in the conversation as an image. Included on Starter and Pro. Connect an assistant

How did uptime look this week?
AssistantSaturday dipped to 99.7%. Every other day was 99.95% or better. Line chart: uptime over seven days
Illustration of a reply. The chart is real; the conversation is an example.

Moving from another service.

From QuickChartMap your chart config to URL parameters.
From Google Image ChartsIt shut down. The URL approach still works here.