--- title: Automerge CRDT | daily.dev description: Automerge 3.0 introduces a major performance improvement with over 10x reduction in memory usage for collaborative document editing. The library now uses... canonical: https://daily.dev/posts/automerge-crdt-38ajevgp8 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Automerge CRDT | daily.dev og:description: Automerge 3.0 introduces a major performance improvement with over 10x reduction in memory usage for collaborative document editing. The library now uses... og:url: https://daily.dev/posts/automerge-crdt-38ajevgp8 og:image: https://api.daily.dev/og/posts/38AjeVgp8.png og:image:alt: Automerge CRDT 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. # Automerge CRDT **[Lobsters](https://daily.dev/sources/lobsters)** · 4 min read · 2 upvotes · 0 comments ## Summary Automerge 3.0 introduces a major performance improvement with over 10x reduction in memory usage for collaborative document editing. The library now uses compressed representation at runtime instead of just for storage, dramatically reducing memory consumption from hundreds of megabytes to just a few megabytes for large documents. The update also streamlines text handling APIs by making collaborative strings the default and removing deprecated classes. The new version maintains backward compatibility with the same file format as version 2.0. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#javascript](https://daily.dev/tags/javascript), [#local-first](https://daily.dev/tags/local-first) [View this post on daily.dev](https://daily.dev/posts/automerge-crdt-38ajevgp8) ```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":"Automerge CRDT","url":"https://daily.dev/posts/automerge-crdt-38ajevgp8","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/automerge-crdt-38ajevgp8"},"datePublished":"2025-07-15T14:38:05.626Z","dateModified":"2026-05-14T02:15:39.771Z","description":"Automerge 3.0 introduces a major performance improvement with over 10x reduction in memory usage for collaborative document editing. The library now uses...","image":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","thumbnailUrl":"https://media.daily.dev/image/upload/s--ZrL_HSsR--/f_auto/v1722860399/public/Placeholder%2006","isAccessibleForFree":true,"articleSection":"Lobsters","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Lobsters","logo":"https://media.daily.dev/image/upload/s--tl8v_Fku--/f_auto,t_logo/v1698841318/logos/lobste.jpg","url":"https://daily.dev/sources/lobsters"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/automerge-crdt-38ajevgp8","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"javascript,local-first","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Lobsters","item":"https://daily.dev/sources/lobsters"},{"@type":"ListItem","position":3,"name":"Automerge CRDT"}]} ```