{
  "id": 3005756,
  "title": "Embed Charts in Markdown Without Chart.js: SVG, Data URIs, and What Actually Works",
  "url": "https://urgent.news/2026/08/24/embed-charts-in-markdown-without-chart-js-svg-data-uris-and-what",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-24T11:08:20.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/provchart/embed-charts-in-markdown-without-chartjs-svg-data-uris-and-what-actually-works-39pi"
  },
  "original_language": "en",
  "account": "Creating charts in Markdown without relying on libraries like Chart.js can be challenging. ProvChart offers a solution by returning SVG graphics in response to POST requests, eliminating the need for JavaScript on the page and avoiding the need for external image CDNs. This article explores Markdown platforms, practical embed methods, and when pure SVG is the preferred default.\n\nTo use ProvChart, send series data to its SVG endpoint and receive either an SVG string or a data URI. Embed the SVG using Markdown's image syntax or embed the inline SVG directly if the Markdown engine supports HTML. For reliable results, commit the SVG file to the repository for GitHub and public documentation sites. Using data URIs is suitable for quick demos, while inline SVG works best when the Markdown engine allows raw HTML. Raster formats like PNG or WebP are useful only when a platform blocks SVG entirely.\n\nThe advantages of using SVG include eliminating chart runtimes, not needing third-party image hosts, providing sharp images at any zoom level, and offering the same data model as HTML charts. Generating SVG files is CI-friendly, as you can regenerate them when metrics change and commit the updated SVG. For Markdown sites where SVG is supported, using committed SVG files is the best practice.",
  "summary": "Markdown is great until you want a real chart in a README or docs site. Most people reach for a screenshot, a hosted PNG, or a heavy client library. ProvChart takes another path: POST /api/v1/generate-svg returns a self-contained SVG (and optional data URI) from your data—no js on the page, no image CDN required. This article covers what different Markdown platforms allow , practical embed…",
  "key_points": [
    "ProvChart returns SVG graphics via POST requests, no JavaScript needed.",
    "Embed SVG using Markdown's image syntax or inline directly if supported.",
    "SVG offers runtime elimination, sharp images, and CI-friendly generation."
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}