Add defer or async to head scripts to reduce render-blocking
SEO + AIOStill open — not detected yet
Our crawler found 3 script(s) in the <head> that load without defer or async attributes, which means the browser must pause rendering the page until each script finishes downloading and executing. This contributes to your Speed & Performance score of 92/100 — the only category below perfect — and slower perceived load times typically hurt user experience and can marginally reduce search rankings. To fix this, add the defer attribute (or async where order independence allows) to each of those 3 script tags so the browser can render page content without waiting for them.
最近验证时间 (Aug 07, 2026): Still showing on the latest crawl: 3 script(s) in <head> without defer/async.
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Issue found by an automated review: Add defer or async to head scripts to reduce render-blocking
Details and evidence from the crawl: Our crawler found 3 script(s) in the <head> that load without defer or async attributes, which means the browser must pause rendering the page until each script finishes downloading and executing. This contributes to your Speed & Performance score of 92/100 — the only category below perfect — and slower perceived load times typically hurt user experience and can marginally reduce search rankings. To fix this, add the defer attribute (or async where order independence allows) to each of those 3 script tags so the browser can render page content without waiting for them.
Area: Speed & performance — improves my SEO + AIO score.
Please: 1) briefly explain what needs to change for my specific platform, 2) give me the exact code or settings changes to make, 3) tell me exactly where to put them, and 4) list what I should double-check after publishing. Keep the changes minimal and safe, and don't touch unrelated code.
将提示词粘贴至您的 AI 工具；发布修复后，在下方重新检测以将此项标记为绿色。
I need help fixing 1 issues on my website mozilla.org, found by an automated review. My site is built with: [YOUR PLATFORM].
1. Add defer or async to head scripts to reduce render-blocking
Evidence: Our crawler found 3 script(s) in the <head> that load without defer or async attributes, which means the browser must pause rendering the page until each script finishes downloading and executing. This contributes to your Speed & Performance score of 92/100 — the only category below perfect — and slower perceived load times typically hurt user experience and can marginally reduce search rankings. To fix this, add the defer attribute (or async where order independence allows) to each of those 3 script tags so the browser can render page content without waiting for them.
Area: Speed & performance — improves SEO + AIO.
Work through them one at a time, in order. For each: Please: 1) briefly explain what needs to change for my specific platform, 2) give me the exact code or settings changes to make, 3) tell me exactly where to put them, and 4) list what I should double-check after publishing. Keep the changes minimal and safe, and don't touch unrelated code.