Your SEO score reflects the health of your website across technical, content, and performance signals. Here's exactly how to improve it, step by step.
An SEO score is only useful if you understand what's driving it down and what fixing it will actually achieve. Most site owners see a number — 54 out of 100, say — and have no idea which issues are responsible for it or where to start.
This guide explains exactly what an SEO score measures, why certain issues carry more weight than others, and how to improve your score systematically rather than randomly patching issues in whatever order a tool surfaces them.
An SEO score is an aggregate health metric. Different tools calculate it differently, but all of them are pulling signals from the same underlying categories:
Technical health — Can search engines crawl and index your site correctly? Are there broken links, redirect chains, missing sitemaps, misconfigured robots.txt files, or indexation errors blocking your content?
On-page signals — Are your title tags, meta descriptions, H1s, and URL structures correctly optimised? Are there duplicate or missing tags?
Content quality — Does your content demonstrate expertise and depth? Is there thin content or duplicate content pulling the average down?
Performance — How do your Core Web Vitals measure? LCP, INP, and CLS are confirmed ranking signals and directly affect user experience.
Structured data — Is schema markup present, valid, and complete? Missing or broken schema represents missed opportunity for rich results and AI search visibility.
A score without this breakdown is not actionable. The first thing to do is get a breakdown by category — Surfaceable's free SEO audit runs 16 checks across these areas and gives you a score with the specific issues flagged, so you have a clear baseline to work from before investing time in fixes.
Start at the foundation. Crawlability problems are the most severe issues on any site because they prevent search engines from accessing your content at all. Fixing on-page signals is pointless if Googlebot can't reach the pages.
Fetch yourdomain.com/robots.txt directly in your browser. Look for any Disallow rules that are accidentally blocking important sections of your site. A common misconfiguration looks like:
Disallow: /
That single line blocks the entire site. It happens more often than it should, usually when a developer sets up staging-site crawl blocking and forgets to revert it on launch.
Also check whether your robots.txt is blocking CSS, JavaScript, or image directories. Google needs to render your pages to understand them — blocking these resources effectively blindfolds the crawler.
Your sitemap should be submitted in Google Search Console and should contain only canonical, indexable URLs. Common problems:
noindex pages (contradictory signal)A redirect chain is when URL A redirects to URL B, which redirects to URL C. Each hop costs a small amount of link authority and adds latency. Use a crawler to map all redirects and collapse chains to single hops where possible.
In Google Search Console, go to Pages → Not indexed. Work through the categories: pages blocked by robots.txt that shouldn't be, pages returning server errors (5xx), and pages returning soft 404s (showing 200 status but effectively empty content).
Once you're confident search engines can access your content, on-page signals are typically the fastest wins available. These are largely metadata and structural issues that can be fixed systematically across a site.
Every page should have a unique title tag between 50 and 60 characters. Run a crawl and export a list of all title tags, then filter for:
For each page, the title should include the primary target keyword — ideally near the start — and accurately describe the page content. Avoid title tags that are just your brand name repeated across dozens of pages.
Meta descriptions don't directly influence rankings, but they influence click-through rate — and CTR affects how much traffic your rankings actually deliver. Target 145–155 characters. Include a clear reason to click. Avoid keyword stuffing.
Every page should have exactly one H1 that incorporates the primary keyword. Supporting sections should use H2 headings; subsections within those should use H3. Don't use heading tags for visual styling — that's what CSS is for.
Short, descriptive, lowercase URLs with hyphens as separators outperform long dynamic URLs on both click-through rate and crawl efficiency. If your URLs contain session IDs, tracking parameters, or auto-generated numeric strings, use canonical tags or URL parameter handling to prevent duplicate content from being indexed.
Technical and on-page fixes will move your score, but content quality is what determines long-term ranking stability. This step is harder than the first two but has the greatest lasting impact.
"Thin content" means pages that don't provide enough value to justify their existence as standalone URLs. Common examples:
The fix is either to consolidate thin pages (redirect to a stronger version) or to substantially expand them with genuinely useful content.
Duplicate content — multiple URLs serving identical or near-identical page content — splits ranking signals and creates ranking instability. Use canonical tags to tell search engines which version is authoritative, or use 301 redirects to eliminate duplicates entirely.
Common sources of duplicate content: www vs. non-www versions, HTTP vs. HTTPS versions (if both are live), trailing slash vs. no trailing slash, print-friendly page variants, and faceted navigation on e-commerce sites.
Google's quality rater guidelines place significant weight on Experience, Expertise, Authoritativeness, and Trustworthiness. For sites in competitive or sensitive verticals, this matters considerably for ranking. Practical improvements include:
Core Web Vitals — Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) — are confirmed ranking signals. More importantly, they're direct measures of how fast and usable your site is.
LCP measures how long the main content element (usually your hero image or largest heading) takes to render. The most common causes of poor LCP:
<link rel="preload"> for your hero image to give the browser an early hint.INP measures the responsiveness of your page throughout a user's entire visit — not just the first interaction. Poor INP is almost always caused by JavaScript execution blocking the main thread. Audit your JS payload:
CLS measures visual instability — how much elements jump around as the page loads. Fix it by:
font-display: optional or font-display: swap to reduce layout shift from web font loadingStructured data (schema markup) helps search engines understand your content beyond its raw text. It unlocks rich results in Google and improves how your content is interpreted by AI search engines.
At minimum, every site should have:
E-commerce sites need Product schema with price, availability, and review aggregation. Sites with genuine FAQ sections should implement FAQ schema.
A common mistake is implementing schema and never checking whether it's valid. Use Google's Rich Results Test to validate every schema type on key pages. Errors — missing required fields, incorrect property types — prevent rich results from being triggered even when the schema is present.
Fixing issues without measuring progress is how effort disappears. Set up a baseline before you start — use Surfaceable's free audit to get an initial score across the 16 most critical checks — then re-run your audit after each phase of work.
Track these metrics alongside your SEO score:
That last metric is the one most teams aren't tracking yet. Your SEO score measures traditional search health — but AI search is now a distinct channel with its own visibility signals. Surfaceable tracks both in the same dashboard, which is increasingly where the complete picture lives.
Improving an SEO score is straightforward when you work through it systematically. The failure mode is jumping to the most visible issues without confirming the foundation is solid. Fix crawlability, then on-page, then content, then performance, then structured data — in that order.
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