New stores: 14 days of Protector freeFirst 25 stores.Uptime, daily scans, Slack and Telegram alerts. No card.See what’s included

“Why did Google stop showing us?” Because the title tags went blank.

Checks every page for the SEO basics that search engines care about — missing titles, broken schema, thin descriptions.

Scan your store free View pricing

SEO Health

347 pages · 29 checks

Passing

Warnings

Critical

What it checks

Meta title presence and length; meta description presence

Heading hierarchy validation (H1 presence, nesting order)

Image alt text coverage

Canonical tag presence

Open Graph and Twitter Card validation

Product schema field completeness (name, description, image, price, brand, SKU)

Basic hreflang validation (missing tags, missing x-default)

Structured data presence detection

Robots meta tag check

What you don't know

Missing titles. Broken schema. Thin descriptions. On every page you forgot to check.

SEO issues don't announce themselves. A missing meta description. A product page without schema markup. An H1 tag that's actually an H3. Search engines see all of it — and rank you accordingly.

Cassian runs 29 deterministic HTML checks every scan. Most run on every page; a handful — product pages, breadcrumbs, homepage schema — run only where they apply. No AI cost, no variability. The same checks, consistently applied, across your entire store.

How Cassian™ detects this

Every scan runs 29 deterministic checks via HTML parsing. These are free, instant (~2ms/page), and don’t use AI — they’re structural validation. Checks include: meta title/description presence and length, heading hierarchy (H1 presence, nesting), alt text coverage, canonical tag correctness, Open Graph and Twitter Card validation, favicon, mixed content, robots meta tag, structured data presence, Product schema field completeness (name, description, image, price, brand, SKU/GTIN), product page content and image validation, and basic hreflang validation for multilingual stores.

With Cassian™