Meta Description

Definition

A meta description is a page summary tag displayed in search results. It is not a direct ranking signal, but it influences click-through rate (CTR).

Summary

A meta description is the <meta name="description"> tag in the HTML head, shown below the title in the SERP. Google has officially stated since 2009 that meta descriptions are not a direct ranking signal, but they affect CTR, and CTR is an indirect ranking signal. Google often rewrites them based on content, so writing a strong first paragraph (BLUF) is a more fundamental approach.

The Real Role of Meta Descriptions

Google's Official Position

Google officially announced in 2009 that "meta descriptions are not a direct ranking signal" and has confirmed this repeatedly since. However, meta descriptions can influence CTR, and CTR can act as an indirect ranking pathway.

Research suggests Google automatically rewrites self-set meta descriptions in roughly 63–70% of cases. Portent's 2024 analysis found rewrite rates as high as 87%. The main reason Google rewrites descriptions is that a paragraph on the page is more relevant to the search query.

Actual Role

• The first page description shown directly below the title in the SERP
• A key factor in whether users click
• Words matching the search query are displayed in bold, increasing visual prominence

6 Rules for Writing Meta Descriptions

1. Length: 150–160 characters in English, 75–80 in Korean

This reflects the pixel-width limit for SERP display. On mobile, text may be truncated sooner, so placing key information within the first 60 characters is safer.

2. Compress the Page's Core Value

Clearly communicate "what users get from this page." Include complementary information rather than simply repeating the title. Adding what the title could not cover in the description is effective.

3. Include a CTA Naturally

Natural calls to action embedded in the copy work better than pushy phrases like "click now." Expressions such as "learn more," "find out," or "explore 5 methods" are appropriate.

4. Include Target Keywords Naturally

Including the target keyword 1–2 times naturally helps matching terms appear in bold and increases visual prominence. Keyword stuffing causes Google to ignore the description and generate a replacement.

5. Write a Unique Description for Each Page

Using the same description across multiple pages causes Google to recognize and ignore it or replace it with an excerpt from the body. A unique description is recommended for every page.

6. End with a Complete Sentence

Write so the final sentence is complete without truncation. If important content is cut off with an ellipsis (…), users get an incomplete impression.

Good vs. Bad Meta Descriptions

Good examples:

Bad examples:

Why Google Rewrites Meta Descriptions

Google ignores self-set descriptions and pulls excerpts from the page body when:

• The description has low relevance to the search query
• The description is empty or too short
• Keyword stuffing is detected
• The page body contains a paragraph more relevant to the search query

Therefore, a more fundamental approach than meta description optimization is writing a strong first paragraph (BLUF) (see [How to Write BLUF] for details). When Google rewrites meta descriptions, it often pulls from the first paragraph or a key answer paragraph.

Meta Descriptions in the AEO/GEO Era

LLM-based answer engines process the full page body directly, so the standalone weight of meta descriptions is relatively smaller. However, they cannot be completely ignored.

• Meta descriptions may appear when AI displays citation sources (see [Google AI Overviews] for details)
• Clear, information-rich meta descriptions can give users confidence in the source
• To increase AI citations, optimizing body BLUF structure is more effective than meta descriptions alone

Meta Description vs. Title Tag

Comparison of the two elements (see [Title Tag] for details):

Application in the Korean Market

For Korean meta descriptions, 75–80 characters is the appropriate range to avoid truncation in the SERP. Naver Blog does not reflect self-set meta descriptions and auto-extracts from the body, so strategy differs from owned websites (see [How Naver SEO Works] for details).

A common mistake among Korean businesses: using the same "company introduction" description on every page. Each page must clearly convey its unique value.

Frequently Asked Questions

Q. Is it better to leave it blank or write one yourself?
A. Writing one yourself is recommended. If left blank, Google extracts arbitrarily from the body, which may display awkwardly in the SERP. However, a low-quality description can be worse than none, so write only after sufficient consideration.

Q. Does including keywords in the meta description improve rankings?
A. There is no direct ranking impact. However, matching terms appear in bold and increase CTR, which becomes an indirect ranking signal.

Q. What happens if I use the same meta description on multiple pages?
A. Google recognizes this and ignores it or replaces it with auto-generated text. A unique description is recommended for every page.

Q. Since Google rewrites frequently, do I not need to bother?
A. No. Setting a description highly relevant to search queries reduces rewrite frequency, and even when rewritten, it encourages Google to pull from the clearest paragraph on the page. Combining meta description optimization with BLUF structure is best.

Sources

• Google Search Central. Control your snippets in search results. https://developers.google.com/search/docs/appearance/snippet
• Search Engine Journal. Google Rewrites Meta Descriptions Over 70% of the Time. https://www.searchenginejournal.com/google-rewrites-meta-descriptions-over-70-of-the-time/382140/
• Portent. How Often Google Ignores Our Meta Descriptions. https://portent.com/blog/seo/how-often-google-ignores-our-meta-descriptions.htm