What are meta tags?

Meta tags are HTML elements placed in the <head> section of a page that convey information about the page to search engines, browsers, and social media platforms. They are not visible to users in the page content but have a significant impact on SEO, CTR in search results, and how content is displayed when shared on social media.

Most important meta tags

Title tag

The title tag is the most important meta tag from an SEO perspective. It is displayed as the clickable heading in Google results and on the browser tab.

Impact on ranking — Google uses the title tag as one of the primary topical signals for a page
Impact on CTR — it is the first element a user sees in the SERP; an engaging title can double click-through rates
Optimal length: 50-60 characters — longer titles are truncated in results
Structure: primary keyword at the beginning, supplemented with value for the user

Example of a good title tag: Staff Augmentation: 7 Benefits for Your IT Project | ARDURA Lab

Meta description

The meta description is a short page summary visible below the title in search results. Google officially does not treat it as a ranking factor, but it directly affects CTR.

Optimal length: 120-155 characters — longer descriptions are truncated
Write it as a call to action — "Learn how to..." instead of a dry description
Include keywords — Google bolds them in the SERP, attracting attention
Unique on every page — each subpage should have an individual description

Google may replace the meta description with its own content excerpt if it determines it better matches the user's query.

Meta robots

Meta robots is an instruction for search engine crawlers specifying how to treat the page:

index / noindex — whether the page should be indexed
follow / nofollow — whether the crawler should follow links on the page
noarchive — blocks page caching in Google
nosnippet — blocks snippet display in the SERP
max-snippet — limits snippet length

Example: <meta name="robots" content="noindex, follow"> — the page is not indexed, but Google follows links on it.

Open Graph (OG) tags

Open Graph tags control how a page appears when shared on social media:

og:title — title visible when shared
og:description — description visible when shared
og:image — image visible when shared (minimum 1200x630 px)
og:type — content type (article, website, product)

Other important meta tags

Canonical URL — <link rel="canonical"> indicates the preferred page version
Viewport — <meta name="viewport" content="width=device-width, initial-scale=1"> ensures responsiveness
Hreflang — <link rel="alternate" hreflang="en"> indicates language versions of the page
Charset — <meta charset="UTF-8"> defines character encoding

Why are meta tags important?

Meta tags are one of the fundamentals of on-page SEO — proper optimization of title and description can increase organic traffic by 20-50% without changing ranking position, solely through improved CTR. Detailed guidance is available in our on-page SEO optimization guide.

Benefits of proper meta tag optimization:

Higher CTR — engaging titles and descriptions attract more clicks
Better ranking — the title tag is a strong ranking signal
Snippet control — you decide what the user sees in Google
Better social media presentation — OG tags ensure an attractive appearance when sharing
Prevention of technical issues — meta robots, canonical, and hreflang eliminate content duplication

How to optimize meta tags?

Optimization checklist

Every page has a unique title tag — never duplicate titles across pages
Every page has a unique meta description — summarizing the content and encouraging clicks
Primary keyword at the beginning of the title — users and Google scan from left to right
Meta description as a mini-ad — specific benefit + call to action
Self-referencing canonical — even if the page has no duplicates
OG tags on key pages — especially blog articles and landing pages
Viewport tag — ensures proper display on mobile

Common mistakes

Missing meta description — Google generates a snippet automatically, often suboptimally
Duplicate titles — multiple pages with the same title tag
Keyword stuffing in the title — excessive repetition of keywords
Titles that are too long — truncated in the SERP, appearing unprofessional
Noindex on important pages — accidentally blocking indexing

A complete list of items to check is available in our technical SEO checklist.

Related Terms

SEO — search engine optimization, of which meta tags are a foundation
CTR — click-through rate dependent on meta tag quality
On-page SEO — on-page element optimization
Canonical URL — tag indicating the preferred page version
Indexing — process controlled by meta robots

Meta Tags