HeroTools / Productivity
Local · Private · Free

Chart Maker

Turn a table of numbers into a clean bar, line, pie or donut chart and export it as PNG — drawn right on your device, nothing uploaded.

Data 2 rows
🔒 Rendered locally — nothing is uploaded.

Drawn from scratch, kept on your machine

No charting library and no server — every bar, slice and label is painted on a canvas in your browser, so your figures never leave the device. Edit the table or paste two columns of data and the chart updates live. Export a crisp 2× PNG for slides, docs or social.

About Chart Maker

Chart Maker is a free, private productivity tool that runs entirely in your web browser. Paste data and get a clean bar, line, pie or donut chart — export PNG. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for chart, graph, bar, line. Like every HeroTool by Digital Heroes, Chart Maker is 100% free with no limits.

How to use Chart Maker

  1. Open Chart Maker — it runs entirely in your browser, with no signup.
  2. Fill in the fields or choose the options you want.
  3. Adjust the options to match exactly what you need.
  4. Copy or download your result — it is free, and your data stays on your device.

Frequently asked questions

Is Chart Maker free?

Yes — Chart Maker is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Chart Maker runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Chart Maker do?

Paste data and get a clean bar, line, pie or donut chart — export PNG.

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