--- title: How to Chunk Text in JavaScript for Your RAG Application description: A practical guide to text chunking strategies in JavaScript for RAG applications. Covers four libraries: llm-chunk (simple paragraph/sentence splitting),... canonical: https://daily.dev/posts/88t360ssc twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to Chunk Text in JavaScript for Your RAG Application | daily.dev og:description: A practical guide to text chunking strategies in JavaScript for RAG applications. Covers four libraries: llm-chunk (simple paragraph/sentence splitting),... og:url: https://daily.dev/posts/88t360ssc og:image: https://api.daily.dev/og/posts/88t360Ssc.png og:image:alt: Post cover image 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. # How to Chunk Text in JavaScript for Your RAG Application **[Hòa Nguyễn Coder](https://daily.dev/sources/hv0uge9ii7tykz7udso6n)** · [@hoanguyencoder](https://daily.dev/hoanguyencoder) · 0 upvotes · 0 comments ## Summary A practical guide to text chunking strategies in JavaScript for RAG applications. Covers four libraries: llm-chunk (simple paragraph/sentence splitting), LangChain (CharacterTextSplitter, RecursiveCharacterTextSplitter, TokenTextSplitter), LlamaIndex (SentenceSplitter, MarkdownNodeParser, SentenceWindowNodeParser), and semantic-chunking (embedding-based cosine similarity grouping). Also covers the Unstructured API for complex file types like PDFs and images. Each library is shown with installation commands and code examples, with trade-offs discussed around speed, control, and chunking quality. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Essential Chunking Techniques for Building Better LLM Applications](https://daily.dev/posts/essential-chunking-techniques-for-building-better-llm-applications-hr2idjqb4) · Machine Learning Mastery · 2 upvotes · 0 comments - [We Stopped Splitting Code Like Text: Code Aware Chunking Unlocked Better RAG](https://daily.dev/posts/we-stopped-splitting-code-like-text-code-aware-chunking-unlocked-better-rag-ihd6ilnbv) · Trendyol Tech · 1 upvotes · 0 comments - [Beyond Text Splitting: Building a Chunking Strategy Library for ODC](https://daily.dev/posts/beyond-text-splitting-building-a-chunking-strategy-library-for-odc-nlpaupgtr) · ITNEXT · 0 upvotes · 0 comments - [Your Chunks Failed Your RAG in Production](https://daily.dev/posts/your-chunks-failed-your-rag-in-production-xkq4ggftq) · Towards Data Science · 6 upvotes · 0 comments - [Introducing chunklet-py v2.2.0\+: One Library to Split Them All — Sentence, Code, Docs](https://daily.dev/posts/introducing-chunklet-py-v2-2-0-one-library-to-split-them-all-sentence-code-docs-j509bswvn) · Medium · 0 upvotes · 0 comments --- Tags: [#javascript](https://daily.dev/tags/javascript), [#rag](https://daily.dev/tags/rag), [#vector-search](https://daily.dev/tags/vector-search), [#langchain](https://daily.dev/tags/langchain), [#llama](https://daily.dev/tags/llama) [View this post on daily.dev](https://daily.dev/posts/88t360ssc) ```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":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/88t360ssc","headline":"How to Chunk Text in JavaScript for Your RAG Application","text":"Shared: How to Chunk Text in JavaScript for Your RAG Application","url":"https://daily.dev/posts/88t360ssc","datePublished":"2026-02-27T08:47:08.845Z","dateModified":"2026-02-27T08:47:50.233Z","author":{"@type":"Person","name":"Hòa Nguyễn Coder","url":"https://daily.dev/hoanguyencoder","image":"https://media.daily.dev/image/upload/s--SCsZnAEj--/f_auto/v1751094071/avatars/avatar_hv0ugE9ii7tYkZ7uDsO6N?_a=BAMClqZW0","description":"Web Developer","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":1610}},"image":"https://media.daily.dev/image/upload/s--qPvKM23u--/f_auto/v1722860399/public/Placeholder%2009","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/7A3fnOhJR"},"isPartOf":{"@type":"WebPage","url":"https://daily.dev/sources/hv0uge9ii7tykz7udso6n","name":"Hòa Nguyễn Coder"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hòa Nguyễn Coder","item":"https://daily.dev/sources/hv0uge9ii7tykz7udso6n"},{"@type":"ListItem","position":3,"name":"How to Chunk Text in JavaScript for Your RAG Application"}]} ```