Sparkline from a URL

Create a Sparkline as a PNG image with a single URL — An inline mini-trend: no axes or chrome. No charting library, no JavaScript, no screenshots.

Live example

https://yakcharts.com/chart.png?type=sparkline&data=%5b%5b1%2c4%5d%2c%5b2%2c7%5d%2c%5b3%2c3%5d%2c%5b4%2c9%5d%2c%5b5%2c8%5d%2c%5b6%2c6%5d%2c%5b7%2c11%5d%5d&title=Sparkline

Embed it anywhere

<img src="https://yakcharts.com/api/chart.png?apiKey=YOUR_KEY&type=sparkline&data=%5b%5b1%2c4%5d%2c%5b2%2c7%5d%2c%5b3%2c3%5d%2c%5b4%2c9%5d%2c%5b5%2c8%5d%2c%5b6%2c6%5d%2c%5b7%2c11%5d%5d">

Works in email, PDFs, READMEs, Slack, dashboards — anywhere an image works. Sign the URL with your secret to remove the watermark.

From code

curl "https://yakcharts.com/api/chart.png?apiKey=YOUR_KEY&type=sparkline&data=%5b%5b1%2c4%5d%2c%5b2%2c7%5d%2c%5b3%2c3%5d%2c%5b4%2c9%5d%2c%5b5%2c8%5d%2c%5b6%2c6%5d%2c%5b7%2c11%5d%5d" -o chart.png

Full reference + JavaScript, Python, PHP, Go and Ruby samples in the docs.

Other chart types

Line chart Spline chart Area chart Bar chart Stacked bar chart Percentage bar chart Horizontal bar chart Horizontal stacked bar Funnel chart Gauge All examples

Put this chart in your own emails, reports and dashboards

YakCharts turns data into a PNG from a single URL — no charting library, no JavaScript, no screenshots. Free tier included; every plan has all 28 chart types.

Start free Read the docs