Simon Willison’s Weblog

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28th May 2026

Tool markdown-svg-renderer — View Mozilla Bugzilla bug reports and render formatted markdown content with live preview. Paste markdown directly or load from a raw URL or GitHub Gist, with support for standard markdown formatting, tables, code blocks, and interactive SVG previews with tabbed display. Toggle between editor and full-screen viewer modes to focus on the rendered output.

A slightly customized Markdown rendering tool with special treatment for fenced code SVG blocks - it both renders the image and provides a tab for switching to the code view.

You can paste in Markdown or give it a URL to a CORS-enabled Markdown file or Gist. Here's an example where it loads a Markdown file full of LLM pelican logs for Opus 4.8.

This is a beat by Simon Willison, posted on 28th May 2026.

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