Yes. The free tier gives 500 chart renders per month with no watermark and no account. Pro is a one-time $9 for dark and brand themes, 25,000 renders/month and immutable caching.

What chart types does ChartBytes support?

Bar, horizontal bar, stacked bar, line, area, scatter, pie and donut charts, rendered as PNG or SVG.

ChartBytes — Chart Image API | Generate chart images from a URL

One URL, one image

https://chartbytes.meridian-digital.pro/chart?t=bar&d=12,19,8,24&labels=Q1,Q2,Q3,Q4&title=Sales

Example bar chart generated by ChartBytes

Paste that URL into an email, a README.md, a Notion page or a Slack message — it renders as an image. Charting libraries need a browser; a chart image works everywhere an <img> does.

In Markdown

![Sales](https://chartbytes.meridian-digital.pro/chart?t=bar&d=12,19,8,24&labels=Q1,Q2,Q3,Q4&title=Sales)

Chart types

type	description	example
`bar`	vertical bars (grouped when multiple series)	→
`hbar`	horizontal bars	→
`stacked`	stacked bars	→
`line`	line chart (multi-series supported)	→
`area`	area chart (filled line)	→
`scatter`	scatter plot (points only)	→
`pie`	pie chart	→
`donut`	donut chart	→

Why a chart image API?

Email clients, READMEs, Notion, Slack messages and PDF reports have no JavaScript runtime — a charting library can't render there. A static image URL renders anywhere. ChartBytes gives you that URL with zero setup, replacing tools like Image-Charts and QuickChart with a simpler, cheaper option.

Pricing

Free — 500 renders/month, light theme, no watermark, no account.
Pro — one-time $9 — dark + brand themes, 25,000 renders/month, immutable caching. Buy now →

FAQ

What is a chart image API? An API that returns a static PNG/SVG chart from a URL, so you can embed charts anywhere an image renders.

Is it free? Yes — 500 renders/month free with no watermark. Pro removes limits for a one-time $9.

Which formats? PNG (default) and SVG. PNG needs no browser; SVG is crisp and small.

Guides

Chart image API — the quick reference: GET and POST /chart
Image-Charts alternative — no watermark on the free tier, $9 one-time Pro
QuickChart alternative — one-time payment instead of $40/month
Chart image for email & GitHub READMEs — embed charts with a plain <img> tag

Chart generators

Chart generator — bar, line, pie and more as an image, no signup
Line chart generator — multi-series line and area charts
Bar chart generator — vertical, horizontal and stacked bars
Pie chart maker — pie and donut charts
Chart to PNG — convert chart data to a PNG image
Chart builder — type your data, get a chart image URL instantly (no signup)

Built by Meridian Digital · Source on GitHub (MIT)