# Streamdown 1.6 is now available to run faster and ship less code

By Steven Van · 2025-11-24

Streamdown 1.6 adds lazy-loaded components, a custom markdown renderer, a static rendering mode, and Mermaid diagram export.

[Vercel](<https://creatorstoolbox.com/tools/vercel>)'s [Streamdown 1.6](<https://vercel.com/changelog/streamdown-1-6-is-now-available-to-run-faster-and-ship-less-code>) is out, with memoization, LRU caching, optimized string operations, and the removal of regexes making the markdown rendering library run faster and ship less code.

- Code Blocks, Mermaid, and Math components are now lazy-loaded with React.lazy() and Suspense, so they only load when used.

- Code highlighting has been rebuilt with a new, simpler tokenization approach that now includes line numbers.

- A custom markdown renderer replaces React Markdown, giving Streamdown a lighter core.

- A new Static Mode renders markdown without streaming, for blogs and other static use cases, reducing streaming overhead.

- Mermaid blocks support custom error components for handling parsing issues, and diagrams can now be exported as SVG, PNG, or source code, with a fullscreen view that adds zoom and pan controls.

Developers can update with **npm i streamdown@latest**.

![Vercel](<https://www.google.com/s2/favicons?domain=vercel.com&sz=128>)

Vercel

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[Original source](<https://vercel.com/changelog/streamdown-1-6-is-now-available-to-run-faster-and-ship-less-code>)

[Read Streamdown 1.6 is now available to run faster and ship less code on Creators Toolbox](<https://creatorstoolbox.com/blog/vercel-streamdown-1-6-is-now-available-to-run-faster-and-ship-less-code>)

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Canonical source: https://creatorstoolbox.com/blog/vercel-streamdown-1-6-is-now-available-to-run-faster-and-ship-less-code