Simon Willison Builds LaTeX Rendering Tool with Claude Code
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On October 15, 2026, Simon Willison wrote that, inspired by Tiny Little Office, he built a LaTeX renderer tool using Claude Code (running the Opus 5.5 Extra model). The tool can render LaTeX source in two forms: formulas typeset via MathJax, and full documents typeset via faster-latex. The rendered content is stored in the URL's #fragment, allowing users to share links containing the rendered results. The report so far covers only the tool's motivation (inspired by Tiny Little Office), the development tools used (Claude Code with Opus 5.5 Extra), and its core features (LaTeX rendering via both MathJax and faster-latex, plus sharing via URL #fragment); no further developments have been reported.
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- Simon WillisonLaTeX renderer
Inspired by Tiny Little Office, Simon Willison used Claude Code (Opus 5.5 Extra) to build a LaTeX renderer tool that renders LaTeX source as MathJax-formatted equations or faster-latex-formatted full documents, and stores content in a URL #fragment for shareable links.
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