Free Website Health Check: Speed, Mobile and SEO Score

Most free checkers hand you one big number and twenty-odd red items, and nobody knows which three matter. This free website health check sorts the result into speed, mobile, security and SEO basics, compares it with Malaysian SME sites the ZenWeb team has audited, and lists the fixes in the order we would do them.

1. How does this free website health check work?

Quick Answer: Type the page address into the free website health check, choose mobile or desktop and press Check my site. The tool sends the address to Google PageSpeed Insights, waits for the test, then shows your health score, your Core Web Vitals and a pass or fail for each mobile, security and SEO check. The test takes up to a minute.

1. Pick the page that matters. Your busiest landing page tells you more than the home page.
2. Test on mobile first. Most Malaysian visitors are on a phone, and that is where sites fail.
3. Tell us how the site was built. Optional. We compare your speed with similar sites.
4. Read the fix list. The first item is the one to do first.
5. Run it three times. Go by the middle result, not the best or the worst.

Already ran PageSpeed Insights yourself? Type your score, LCP, CLS and INP into the box under the questions instead. Our guide to the best free website speed test tools compares it with the other free testers.

2. What does your website health score mean?

Quick Answer: The health score is the average of Google’s four scores: Performance, Accessibility, Best Practices and SEO. Each sits in a colour band: 0 to 49 red, 50 to 89 amber, 90 to 100 green. The band your mobile speed score lands in matters more than the exact number.

Leaving the red band pays about three times what the move into green does, so get out of red before you chase 100. Speed is judged on Google’s Core Web Vitals: LCP under 2.5 seconds, INP under 200 milliseconds and CLS under 0.1. The tool uses Google’s real-visitor data where it exists and the lab test where it doesn’t.

Key takeaway: Your band matters more than your number. A mobile score of 70 with passing Core Web Vitals is a healthier site than a 95 with a slow LCP.

3. How do you check if your website is mobile friendly?

Quick Answer: Run the mobile test and look at the Mobile group. It checks that the page has a viewport tag, that visitors can pinch to zoom, and, where Google reports it, that the text is big enough to read. Then open the page on a real phone and read one full paragraph at arm’s length.

These are the checks behind most of the small-text jobs we fix, from our guide to website text too small on mobile:

• Viewport tag: without it, phones shrink the desktop layout and every word with it. A missing or broken tag is behind 22% of the cases we see.
• Zoom left on: user-scalable=no or maximum-scale=1 traps anyone who needs bigger text.
• Base text size: aim for 16px. Google’s Chrome team flags text under 12px as hard to read on phones.
• Secure connection: the page should load on HTTPS.

See also mobile-friendly websites in Malaysia and our technical SEO basics.

Key takeaway: A page that looks fine on your office screen can still fail every phone. The mobile checks catch the one-line settings that cause it.

4. What should you fix first after a website health check?

Quick Answer: Fix the mobile setup first, because a missing viewport tag breaks every page at once. Then work on the slowest Core Web Vital. On the sites we audit, an oversized hero image is the most common cause of a slow LCP. Change one thing, retest, then move on.

How the site was built sets the ceiling. Median mobile LCP at first audit runs from 2.7 seconds on custom-coded sites to 5.4 seconds on WooCommerce shops. Only 35% of the Malaysian SME sites we audited passed all three Core Web Vitals on mobile in the first half of 2026, so passing puts you ahead of most local competitors.

Our guides on a site that loads slowly on mobile, images that are too heavy and failing Core Web Vitals walk through each fix.

5. Frequently Asked Questions