/kb/tanstack

• Render-blocking requests

  Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

  Est savings of 900 ms

  Covered by: Unblock the initial render →
  −900 ms
• Avoid enormous network payloads

  Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

  Total size was 2,919 KiB

  Covered by: Reduce total page weight →
• Legacy JavaScript

  Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

  Est savings of 28 KiB

  Covered by: Cut and defer JavaScript →
• Reduce unused JavaScript

  Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

  Est savings of 815 KiB

  Covered by: Cut and defer JavaScript →
• Reduce unused CSS

  Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

  Est savings of 13 KiB

  Covered by: Unblock the initial render →

• Background and foreground colors do not have a sufficient contrast ratio.

  Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

  Covered by: Address accessibility gaps →

• Missing source maps for large first-party JavaScript

  Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.
• Browser errors were logged to the console

  Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

• ✓
  Canonical URL

  Page has a stable URL to cite
• ✕
  Author identity

  No author meta or schema — citation confidence drops without a named source
• ✕
  Publication date

  No publication or modification date in JSON-LD — answer engines deprioritize undated content
• !
  Article schema

  No Article / NewsArticle / BlogPosting schema — limits rich-snippet eligibility
• ✓
  Content depth

  4738 words — substantial for a citation source
• ✓
  Semantic structure

  Uses <main>, <article> or <header>

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