--- title: Making complex web apps faster | daily.dev description: The Microsoft Edge team introduces the Delayed Message Timing API, a new browser API designed to help developers diagnose and fix performance issues in complex... canonical: https://daily.dev/posts/making-complex-web-apps-faster-gyx3mbuhe twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Making complex web apps faster | daily.dev og:description: The Microsoft Edge team introduces the Delayed Message Timing API, a new browser API designed to help developers diagnose and fix performance issues in complex... og:url: https://daily.dev/posts/making-complex-web-apps-faster-gyx3mbuhe og:image: https://api.daily.dev/og/posts/gYX3MbUhE.png og:image:alt: Making complex web apps faster 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. # Making complex web apps faster **[Patrick Brosset](https://daily.dev/sources/patrickbrosset)** · 1 min read · 1 upvotes · 1 comments ## Summary The Microsoft Edge team introduces the Delayed Message Timing API, a new browser API designed to help developers diagnose and fix performance issues in complex web apps that use postMessage for communication between windows, workers, or iframes. The API exposes insights into why messages were delayed, enabling targeted performance optimizations. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Frontend Focus Issue 721: December 10, 2025](https://daily.dev/posts/frontend-focus-issue-721-december-10-2025-2epsjjjg8) · Frontend Focus · 3 upvotes · 0 comments - [Monitor and improve your web app’s load performance](https://daily.dev/posts/monitor-and-improve-your-web-app-s-load-performance-nupczfgkm) · Patrick Brosset · 0 upvotes · 0 comments - [JavaScript Weekly Issue 765: December 12, 2025](https://daily.dev/posts/javascript-weekly-issue-765-december-12-2025-i4sxscrki) · JavaScript Weekly · 28 upvotes · 0 comments - [Medium](https://daily.dev/posts/medium-w2o7cicnw) · Medium · 0 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#microsoft-edge](https://daily.dev/tags/microsoft-edge) [View this post on daily.dev](https://daily.dev/posts/making-complex-web-apps-faster-gyx3mbuhe) ```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":"Making complex web apps faster","url":"https://daily.dev/posts/making-complex-web-apps-faster-gyx3mbuhe","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/making-complex-web-apps-faster-gyx3mbuhe"},"datePublished":"2026-03-22T11:40:32.710Z","dateModified":"2026-03-22T11:41:06.392Z","description":"The Microsoft Edge team introduces the Delayed Message Timing API, a new browser API designed to help developers diagnose and fix performance issues in complex...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/fc3f3d15a6f5849443d5136427581420?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/fc3f3d15a6f5849443d5136427581420?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Patrick Brosset","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":"Patrick Brosset","logo":"https://media.daily.dev/image/upload/s--AD7IzOuB--/f_auto,q_auto/v1774179622/logos/patrickbrosset","url":"https://daily.dev/sources/patrickbrosset"},"commentCount":1,"discussionUrl":"https://daily.dev/posts/making-complex-web-apps-faster-gyx3mbuhe","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":1}],"keywords":"webdev,microsoft-edge","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Patrick Brosset","item":"https://daily.dev/sources/patrickbrosset"},{"@type":"ListItem","position":3,"name":"Making complex web apps faster"}]} ```