Generating Charts in Pure Ruby Without JavaScript

#programming #ruby #rails #servicessubscription

May 7, 2026

Modern chart rendering usually assumes a browser, a JavaScript runtime, or a frontend stack.

But many Ruby applications do not actually need interactive dashboards.

They need deterministic image generation.

Things like:

scheduled reports
PDF exports
transactional emails
admin dashboards
analytics snapshots
CI metrics
server-side rendering pipelines

That was the motivation behind building RubyCharts: a lightweight chart rendering library written for backend-oriented Ruby workflows.

The project is still under active development, but the core idea is already working: generate PNG charts directly from Ruby using native rendering primitives.

The rendering backend is powered by ruby-libgd.

Built for Ruby on Rails

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Stop relying on third-party map billing and bloated JS libraries. Render static or dynamic maps directly in Ruby.

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