On-Page SEO

LSI Keywords

Quick Definition

LSI (Latent Semantic Indexing) keywords are conceptually related terms that help search engines understand topic relevance — though Google has stated it doesn't actually use LSI as a technical concept.

In context

The term LSI is a misnomer in modern SEO context. What matters is covering the topic comprehensively with related terms, synonyms, and supporting concepts that emerge from natural writing on the subject.

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Related terms

Primary Keyword

The primary keyword is the single most important search query a page targets, typically reflected in the title, H1, and URL.

URL Slug

The URL slug is the readable part of a URL after the domain — the words separated by hyphens that describe the page.

Title Tag Rewrite (by Google)

Google sometimes rewrites the title tag it shows in SERPs, replacing the page's <title> element with text it judges more relevant — a behaviour that became widespread in 2021 and has continued.

Title Tag

The title tag is the HTML element that defines a page's title, shown in browser tabs and as the clickable headline in search results.

H2 Tag

H2 tags are second-level headings used to structure the major sections of a page.

Alt Text

Alt text is descriptive text added to images via the alt attribute, used by screen readers and search engines to understand image content.

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