developer.mozilla.org
Strong, with a few clear wins still on the table.
- 01Performance & Core Web Vitals
Largest Contentful Paint: 2.9s (needs-improvement)
The main content should render within 2.5s. Slow LCP is the single biggest reason mobile visitors abandon a page before it's usable.
- 02Performance & Core Web Vitals
Total Blocking Time: 560ms (needs-improvement)
Heavy JavaScript blocks the main thread, so taps and scrolls feel laggy right when the page appears.
- 03Performance & Core Web Vitals
Preconnect to required origins — save ~0.3s
Est savings of 300 ms
- 04Performance & Core Web Vitals
Properly size images — save ~614KB
Est savings of 614 KiB
- 05Performance & Core Web Vitals
Serve images in next-gen formats — save ~612KB
Est savings of 612 KiB
Largest Contentful Paint: 2.9s (needs-improvement)
The main content should render within 2.5s. Slow LCP is the single biggest reason mobile visitors abandon a page before it's usable.
Total Blocking Time: 560ms (needs-improvement)
Heavy JavaScript blocks the main thread, so taps and scrolls feel laggy right when the page appears.
Preconnect to required origins — save ~0.3s
Est savings of 300 ms
Properly size images — save ~614KB
Est savings of 614 KiB
Serve images in next-gen formats — save ~612KB
Est savings of 612 KiB
Enable text compression — save ~2KB
Est savings of 2 KiB
Title is short (12 chars)
Aim for ~50–60 characters with your primary keyword and location.
No structured data (JSON-LD)
Schema.org markup tells AI engines exactly what your business is, what you offer, and how to reach you — the clearest way to be identified and cited.
Document should have one main landmark (1 element)
Ensure the document has a main landmark
All page content should be contained by landmarks (5 elements)
Ensure all page content is contained by landmarks
- No issues in this category. Nicely done.
No social share preview (Open Graph)
When your link is shared on iMessage, WhatsApp, LinkedIn or Slack, it shows as a bare URL with no image or title — looks amateur and kills click-through.
“Featured articles Blog Celebrating 20 years of MDN MDN turns 20! Let's look at how we started, how MDN became the most trusted resource for web developers, the impact it's had on the open web, and yes, there's cake, too. Web APIs Navigation API The Navigation API provides the ability to initiate, intercept, and manage browser navigation actions. It can also examine an application's history entries. This is a successor to previous web platform features such as the History API and window.location, which solves their shortcomings and is specifically aimed at the needs of single-page applications (SPAs). Web APIs Trusted Types API The Trusted Types API gives web developers a way to ensure that i…”
This is the text an AI answer engine actually pulls from your page. If your offer or location isn't in here, ChatGPT and Perplexity can't say it.
- 14page(s) with no structured data
- 25broken internal link(s)
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<a href="https://luxeplatforms.com/website-grader/r/4b8df106c5a9" target="_blank" rel="noopener"> <img src="https://luxeplatforms.com/website-grader/r/4b8df106c5a9/badge" alt="Website & AI grade: B" width="264" height="66"> </a>
Audited in 34s with a hand-built engine: real Lighthouse, axe-core, and field data. Weights shown per category. No fabricated numbers.