How to Check Your Website SEO Score (And Actually Fix What's Wrong)

You've built a website. Maybe it looks great. But is Google actually able to find it, crawl it, and rank it? That's what your SEO score tells you — and most site owners have never checked theirs.

An SEO score is a numerical grade (usually 0–100) that measures how well-optimized your website is for search engines. It evaluates everything from your meta tags and heading structure to your page speed and mobile-friendliness. The higher the score, the better your chances of ranking on page one.

In this guide, we'll walk through exactly how to check your website's SEO score, what each part of the score means, and — most importantly — how to fix the issues dragging it down.

Why Your SEO Score Matters

Think of your SEO score like a health checkup for your website. You might feel fine, but an audit can reveal hidden problems:

• Missing meta descriptions that cost you clicks in search results
• Broken links that frustrate users and waste crawl budget
• Slow page loads that cause visitors to bounce before they even see your content
• Missing alt text on images, hurting both accessibility and image search traffic
• No structured data, meaning Google can't show rich snippets for your pages

Sites that score poorly on SEO audits typically see 40–60% less organic traffic than optimized competitors in the same niche. Fixing these issues isn't optional if you want to grow — it's the baseline.

Step 1: Run a Comprehensive Website Audit

The fastest way to check your SEO score is to use an AI-powered audit tool. Instead of manually inspecting your HTML, a good tool will crawl your page and grade it across multiple categories instantly.

Here's what to look for in an audit tool:

• SEO analysis — meta tags, headings, keyword usage, internal links
• Performance check — page size, render-blocking resources, load time
• Accessibility review — ARIA labels, color contrast, keyboard navigation
• Security scan — HTTPS status, security headers, mixed content

SiteScore does all of this in one scan. Just paste your URL, and you'll get category-by-category scores with plain-English explanations of every issue found — plus AI-generated code fixes you can copy and paste.

Step 2: Understand Your Score Breakdown

A single number doesn't tell you much. What matters is the breakdown. Here's what each category typically covers:

SEO (On-Page Optimization)

This is the core of your score. It checks:

• Title tag — Is it present, unique, and under 60 characters?
• Meta description — Does it exist and accurately describe the page?
• Heading hierarchy — Do you have one H1, followed by logical H2s and H3s?
• Image alt text — Can screen readers (and Google) understand your images?
• Internal links — Are you linking between your own pages to spread authority?
• Canonical tags — Are you telling Google which version of a page is the "real" one?

A common mistake: many sites have multiple H1 tags or skip heading levels entirely (jumping from H1 to H4). Search engines use your heading structure to understand content hierarchy, so this matters more than most people think.

Performance

Google has made page speed a direct ranking factor. Your performance score looks at:

• Total page weight — How many MB does your page load? Under 2 MB is ideal.
• Render-blocking resources — CSS and JavaScript files that prevent the page from displaying
• Image optimization — Are you using modern formats like WebP or AVIF?
• Server response time — How fast does your server start sending data?

Even a 1-second improvement in load time can increase conversions by 7% and reduce bounce rates significantly.

Accessibility

While not a direct Google ranking factor, accessibility correlates with better SEO outcomes because accessible sites tend to have cleaner HTML, better structure, and more descriptive content.

Key checks include:

• Color contrast ratios — Can users with low vision read your text?
• ARIA labels — Do interactive elements have proper labels?
• Keyboard navigation — Can someone use your site without a mouse?
• Form labels — Are all form inputs properly labeled?

Security

HTTPS is a confirmed ranking signal. Beyond that, security headers protect your users and build trust:

• HTTPS — Is your entire site served over a secure connection?
• Content Security Policy — Are you preventing cross-site scripting attacks?
• X-Frame-Options — Can your site be embedded in malicious iframes?
• Mixed content — Are you loading insecure resources on a secure page?

Step 3: Prioritize Your Fixes

After running your audit, you'll likely see a list of issues. Don't try to fix everything at once. Prioritize by impact:

1. Critical issues first — Broken pages, missing titles, no HTTPS, server errors
2. High-impact SEO fixes — Meta descriptions, heading structure, alt text
3. Performance wins — Image compression, removing unused CSS/JS
4. Nice-to-haves — Minor accessibility tweaks, additional structured data

A good rule of thumb: fix anything that directly prevents Google from understanding or ranking your page first, then optimize for user experience.

Step 4: Re-Audit After Making Changes

SEO isn't a one-time task. After you've made fixes:

1. Run your audit again to verify improvements
2. Compare scores before and after
3. Submit your updated sitemap to Google Search Console
4. Set a schedule — audit monthly at minimum, weekly if you publish frequently

Websites that run regular audits consistently outperform those that only check once. Search engines update their algorithms hundreds of times per year, and what worked six months ago might be holding you back today.

Common SEO Score Mistakes to Avoid

Even experienced developers make these errors:

• Ignoring mobile optimization — Over 60% of web traffic is mobile. If your site isn't responsive, your score (and rankings) will suffer.
• Keyword stuffing — Repeating your target keyword unnaturally doesn't help anymore. Write for humans first.
• Forgetting about Core Web Vitals — Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) are all ranking signals.
• Not setting up redirects — If you change URLs, old links become 404s. Always redirect.
• Skipping structured data — Schema markup helps Google display rich results like star ratings, FAQs, and product info directly in search.

Start Improving Your Score Today

Checking your website's SEO score takes less than 30 seconds, but the insights can transform your search traffic. The sites that rank on page one aren't necessarily better — they're just better optimized.

Try SiteScore to get your free AI-powered audit. You'll see exactly what's holding your site back and get copy-paste fixes for every issue — no technical expertise required.

Your website deserves to be found. Start with the score, then fix what matters.