Shopify SEO Audit: Free 15-Point On-Page Checker, Scored to 100

Here is what a real audit looks like.

A frozen audit of gymshark.com. Score is composite: each of 15 checks is pass, warn, or fail, weighted by SEO impact.

gymshark.com

Score 84 / 100 · 11 pass · 3 warn · 1 fail

Title tag

Gym Shark | Conditioning Wear for Visionaries (62 chars)

Pass
Meta description

159 chars, unique, includes brand and category

Pass
H1 structure

1 H1 found, descriptive, brand-aligned

Pass
Image alt coverage

67% of images have alt text (target: 95%+)

Warn
Structured data (JSON-LD)

Organization, BreadcrumbList found. Missing Product schema

Warn
hreflang tags

Not present (multi-region site detected)

Fail

Run your own audit above to get the full 15-check report.

What the 15-point audit covers.

Every check has a concrete pass criterion. No subjective scoring, no vague advice. The full check list:

Title tag. Present, between 30 and 65 characters, unique brand placement.
Meta description. Present, between 120 and 165 characters, unique.
H1 tag. Exactly one, descriptive, contains primary keyword.
Heading hierarchy. H2 and H3 nest under H1 in logical order.
Image alt coverage. 95% or more of images have meaningful alt text.
Canonical link. Present, points to itself, no parameter pollution.
Open Graph tags. og:title, og:description, og:image, og:url all present.
Twitter Card tags. twitter:card and supporting tags present.
Structured data. Valid JSON-LD, at minimum Organization or WebSite schema.
Viewport meta tag. Present and set to width=device-width.
hreflang attributes. Present on multi-region sites, correctly cross-linked.
robots.txt. Accessible, allows public pages, references sitemap.
sitemap.xml. Accessible at the conventional path, valid XML, includes the homepage.
HTTPS. Site loads over HTTPS, no mixed-content warnings.
Internal link depth. Homepage links to at least 20 internal URLs to spread PageRank.

How the Shopify SEO audit works.

01

Fetch the homepage.

The audit pulls the raw HTML of the storefront homepage, plus robots.txt and sitemap.xml from their conventional paths.

02

Run 15 static checks.

Each check is a deterministic rule. Title length, alt coverage, JSON-LD validity, hreflang presence. No JavaScript rendering, no third-party data.

03

Score and show the fix.

Each check is pass, warn, or fail. The composite score is a weighted average. Every warn or fail comes with the exact piece of HTML that triggered it and a one-line fix.

When to run a Shopify SEO audit.

Pre-launch checklist.

Before going live, run the audit. A clean baseline now is a thousand times cheaper than retrofitting fixes once you start ranking and accrue indexed pages with the wrong canonicals.

Competitive SEO research.

Audit three competitors who outrank you. Compare what they got right that you missed. The audit shows what is fixable on your own page, not just what is wrong.

Agency SEO discovery.

SEO agency? Run the audit before your first call with a prospective client. You arrive with a list of fixable issues, a score, and a starting point. Faster sales, sharper scope.

Monthly self-audit.

SEO drifts. Apps inject scripts, theme changes lose canonicals, hreflang tags decay after a market launch. Run the audit monthly to catch the small regressions before they compound.

What the audit does not measure.

On-page SEO is half the story. Be honest about the off-page signals that live outside this report:

Off-page signals. Backlinks, referring domains, anchor text profiles. Use Ahrefs, Moz, or Semrush for those.
Core Web Vitals. LCP, INP, CLS. Use the Speed Checker on this site, or Google PageSpeed Insights for the official measurement.
Search Console data. Impressions, clicks, average position. Connect your own GSC account.
Content quality and depth. Word count, semantic coverage, entity matching. The audit is structural, not editorial.
JavaScript-rendered content. Anything injected after page load is invisible to static analysis. Most SEO-relevant content should be in the initial HTML anyway.
Page-level audits beyond the homepage. The audit covers the homepage only. PDP, PLP, and search pages have their own SEO patterns.

Frequently asked questions.

Is the Shopify SEO Checker free?

Yes. Every audit is free, with no daily limit, no signup, and no API key. The audit reads only public HTML.

What does the SEO score actually mean?

The score is a weighted composite of 15 on-page checks. Each check is either pass, warn, or fail, and weighted by SEO impact. A score above 80 indicates a clean baseline. Below 60 indicates structural issues.

How is the SEO Checker different from Google Lighthouse?

Lighthouse runs the page in a headless Chromium and measures performance, accessibility, best practices, and SEO together. This SEO Checker runs static analysis on the HTML alone, faster, focused only on on-page SEO signals.

Does the checker measure backlinks or domain authority?

No. The checker is on-page only. Off-page signals like backlinks and domain authority require crawl data from Ahrefs, Moz, or Semrush. The checker reports the things you control directly on the page.

Why is my SEO score lower than competitors who rank above me?

Rankings depend on more than on-page SEO. Content depth, backlinks, brand searches, and historical authority all matter. A competitor with weaker on-page SEO can outrank you on the strength of those factors. The checker tells you the part you can fix today.

Can I audit a non-Shopify site?

Yes. The 15 checks are generic on-page SEO signals. Any public website with HTML works. The tool just happens to be tuned for the patterns common on Shopify storefronts.

Five more free Shopify tools, same evidence-first approach.