NOTABIS SEO / LEARN
Practical guides for the SEO findings NOTABIS measures. Learn what an issue means, how to verify it, when it is intentional, and how to fix it safely.
Crawlability · 16 Sep 2026
NOTABIS reports an invalid sitemap namespace when a declared sitemap uses a non-standard non-empty default namespace. Correct the root namespace before relying on the file for discovery.
Read guide →Crawlability · 16 Sep 2026
A sitemap content-type issue occurs when a parseable sitemap response does not advertise an XML content type. NOTABIS flags the header separately from XML validity and URL quality.
Read guide →Metadata · 16 Sep 2026
NOTABIS reports multiple-meta-descriptions when one measured document contains more than one meta description element. Keep one accurate page summary and remove duplicate template output.
Read guide →Metadata · 16 Sep 2026
NOTABIS reports multiple-title-tags when one measured HTML response contains more than one title element. Remove accidental duplicates and keep a single page-specific title.
Read guide →Social · 16 Sep 2026
Social metadata supplies sharing platforms with preview information. NOTABIS passes when four core Open Graph and Twitter card fields are present in measured HTML; it does not validate their values.
Read guide →Structured data · 16 Sep 2026
The jsonld-valid check passes when every measured JSON-LD block parses as JSON, including when none is present. Syntax validity does not prove schema eligibility.
Read guide →Images · 16 Sep 2026
The image-alt check passes when every measured img element has an alt attribute, including an empty value for decorative images. It confirms presence, not descriptive quality.
Read guide →Technical SEO · 16 Sep 2026
The canonical-present check passes when NOTABIS measures a canonical link value. It confirms a declaration only; target correctness, conflicts, and indexability require separate checks.
Read guide →Metadata · 16 Sep 2026
The description-present check passes when NOTABIS measures a meta description value. It confirms presence, not uniqueness, length, quality, or whether a search engine will use it.
Read guide →Metadata · 16 Sep 2026
The title-present check passes when NOTABIS measures a non-empty title element. It confirms presence only; clarity, uniqueness, length, and search display need separate review.
Read guide →Content · 16 Sep 2026
An empty H1–H6 element contains no trimmed text and introduces no understandable section. NOTABIS reports it as a low-priority structure and accessibility review.
Read guide →Content · 16 Sep 2026
The single-h1 check passes when NOTABIS measures exactly one H1 element in the page HTML. It confirms a count, not wording, visibility, or ranking value.
Read guide →Accessibility · 16 Sep 2026
A meaningful iframe should have a concise title that identifies its embedded content. NOTABIS reports iframe-title-missing when the title attribute is absent in measured HTML.
Read guide →Accessibility · 16 Sep 2026
An empty link has no visible text or aria-label in the measured HTML. NOTABIS reports this as a navigation and accessibility review and does not calculate every possible accessible name.
Read guide →Accessibility · 16 Sep 2026
NOTABIS flags form controls that have neither an id nor an aria-label in measured HTML. Use the finding to inspect real label associations, because the check is a lightweight heuristic.
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