--- title: dannote/phoenix_streamdown: Streaming markdown renderer... description: PhoenixStreamdown is a streaming markdown renderer for Phoenix LiveView, designed specifically for LLM token output. It uses server-side rendering with zero... canonical: https://daily.dev/posts/dannote-phoenix-streamdown-streaming-markdown-renderer-for-phoenix-liveview-optimized-for-llm-outp-5bpdnzg5n twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: dannote/phoenix_streamdown: Streaming markdown renderer for Phoenix LiveView, optimized for LLM output | daily.dev og:description: PhoenixStreamdown is a streaming markdown renderer for Phoenix LiveView, designed specifically for LLM token output. It uses server-side rendering with zero... og:url: https://daily.dev/posts/dannote-phoenix-streamdown-streaming-markdown-renderer-for-phoenix-liveview-optimized-for-llm-outp-5bpdnzg5n og:image: https://api.daily.dev/og/posts/5BpDNZg5N.png og:image:alt: dannote/phoenix_streamdown: Streaming markdown renderer for Phoenix LiveView, optimized for LLM output og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # dannote/phoenix_streamdown: Streaming markdown renderer for Phoenix LiveView, optimized for LLM output **[ElixirStatus](https://daily.dev/sources/elixirstatus)** · 2 min read · 1 upvotes · 0 comments ## Summary PhoenixStreamdown is a streaming markdown renderer for Phoenix LiveView, designed specifically for LLM token output. It uses server-side rendering with zero client-side JavaScript by leveraging LiveView's DOM diffing. The library splits markdown into independent blocks, auto-closes incomplete syntax during streaming, and uses MDEx (Rust-backed) for HTML rendering. Completed blocks are frozen with `phx-update="ignore"` so only the active block re-renders per token — achieving ~7x less server work and ~460x smaller diffs on a 56-block document compared to full re-renders. Available as a 1.0.0-beta Hex package. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [phoenix\_streamdown](https://daily.dev/posts/phoenix-streamdown-ol1zom7cq) · ElixirStatus · 0 upvotes · 0 comments - [Elixir Programming Language Forum](https://daily.dev/posts/elixir-programming-language-forum-qyfr7vfn8) · Elixir Forum · 0 upvotes · 0 comments - [Elixir Programming Language Forum](https://daily.dev/posts/elixir-programming-language-forum-bdlkzxb8w) · Elixir Forum · 1 upvotes · 0 comments - [a reference for integrating llm\_composer into a real Elixir application](https://daily.dev/posts/a-reference-for-integrating-llm-composer-into-a-real-elixir-application-k9ht6yvz5) · Elixir Forum · 0 upvotes · 0 comments --- Tags: [#llm](https://daily.dev/tags/llm), [#elixir](https://daily.dev/tags/elixir), [#markdown](https://daily.dev/tags/markdown), [#liveview](https://daily.dev/tags/liveview) [View this post on daily.dev](https://daily.dev/posts/dannote-phoenix-streamdown-streaming-markdown-renderer-for-phoenix-liveview-optimized-for-llm-outp-5bpdnzg5n) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"dannote/phoenix_streamdown: Streaming markdown renderer for Phoenix LiveView, optimized for LLM output","url":"https://daily.dev/posts/dannote-phoenix-streamdown-streaming-markdown-renderer-for-phoenix-liveview-optimized-for-llm-outp-5bpdnzg5n","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/dannote-phoenix-streamdown-streaming-markdown-renderer-for-phoenix-liveview-optimized-for-llm-outp-5bpdnzg5n"},"datePublished":"2026-02-25T12:59:10.427Z","dateModified":"2026-02-25T12:59:26.111Z","description":"PhoenixStreamdown is a streaming markdown renderer for Phoenix LiveView, designed specifically for LLM token output. 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