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WordPress fix guide

Deprecated API Usage Heuristic on WordPress

Page may use deprecated browser APIs (e.g., document.write, synchronous XMLHttpRequest) that can degrade performance or break in future browsers.

Issue ID: TECH-DEPRECATED-API-001Severity: advisoryEffort: M

Why this matters

Page may use deprecated browser APIs (e.g., document.write, synchronous XMLHttpRequest) that can degrade performance or break in future browsers. This affects crawlability, rendering, and whether the site can be interpreted correctly by search engines.

WordPress fix path

How to fix this on WordPress

Use the page editor, theme, or SEO tooling depending on where this issue lives.

  1. 1Inspect the page and theme output.
  2. 2Apply the fix in the most direct place.
  3. 3Publish and validate with a re-audit.

After you fix it

  • No deprecation warnings in Chrome DevTools Issues tab

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