--- title: The Ultimate Guide to Fixing JavaScript Performance... description: No one wants a slow site, but not all bytes are created equally canonical: https://daily.dev/posts/the-ultimate-guide-to-fixing-javascript-performance-problems-in-browser-devtools-ztj2mqkkp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The Ultimate Guide to Fixing JavaScript Performance Problems in Browser DevTools | daily.dev og:description: No one wants a slow site, but not all bytes are created equally og:url: https://daily.dev/posts/the-ultimate-guide-to-fixing-javascript-performance-problems-in-browser-devtools-ztj2mqkkp og:image: https://api.daily.dev/og/posts/ztj2Mqkkp.png og:image:alt: The Ultimate Guide to Fixing JavaScript Performance Problems in Browser DevTools 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. # The Ultimate Guide to Fixing JavaScript Performance Problems in Browser DevTools **[asayer](https://daily.dev/sources/asayer)** · 24 min read · 16 upvotes · 1 comments ## Summary No one wants a slow site, but not all bytes are created equally ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@hamatoyogi** · 2 upvotes > I like pieces that consolidate knowledge. This is a good one. --- Tags: [#devtools](https://daily.dev/tags/devtools), [#javascript](https://daily.dev/tags/javascript) [View this post on daily.dev](https://daily.dev/posts/the-ultimate-guide-to-fixing-javascript-performance-problems-in-browser-devtools-ztj2mqkkp) ```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":"The Ultimate Guide to Fixing JavaScript Performance Problems in Browser DevTools","url":"https://daily.dev/posts/the-ultimate-guide-to-fixing-javascript-performance-problems-in-browser-devtools-ztj2mqkkp","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/the-ultimate-guide-to-fixing-javascript-performance-problems-in-browser-devtools-ztj2mqkkp"},"datePublished":"2021-04-13T06:31:19.333Z","dateModified":"2026-03-15T06:51:31.987Z","description":"No one wants a slow site, but not all bytes are created equally","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/6aba42a9172e955d6c87ab39500b2489","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/6aba42a9172e955d6c87ab39500b2489","isAccessibleForFree":true,"articleSection":"asayer","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":"asayer","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/be8d9d38650943c8a1718ba79f23e9ac","url":"https://daily.dev/sources/asayer"},"commentCount":1,"discussionUrl":"https://daily.dev/posts/the-ultimate-guide-to-fixing-javascript-performance-problems-in-browser-devtools-ztj2mqkkp","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":16},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":1}],"keywords":"devtools,javascript","timeRequired":"PT24M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"asayer","item":"https://daily.dev/sources/asayer"},{"@type":"ListItem","position":3,"name":"The Ultimate Guide to Fixing JavaScript Performance Problems in Browser DevTools"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/the-ultimate-guide-to-fixing-javascript-performance-problems-in-browser-devtools-ztj2mqkkp","comment":[{"@type":"Comment","text":"I like pieces that consolidate knowledge. This is a good one.","datePublished":"2021-04-13T08:24:44.736Z","url":"https://daily.dev/posts/ztj2Mqkkp#c-bOE5bmB35","author":{"@type":"Person","name":"Yoav Ganbar","url":"https://daily.dev/hamatoyogi","image":"https://avatars0.githubusercontent.com/u/6682981?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2}}]} ```