Meta Description Length: How Long Should It Be?

Updated 2026-08-31 · 3 min read

The working limits

Google truncates by pixel width, not exact character count, but the practical guidance is 150–160 characters for desktop and around 120 characters for mobile. Put the important promise in the first 110 characters so it survives every layout.

Titles too

Titles get about 50–60 characters, or roughly 580 pixels. Front-load the keyword, keep the brand at the end, and avoid duplicating the same title across pages — duplicate titles are one of the most common causes of pages that never rank.

Google rewrites descriptions — write them anyway

Search engines often generate their own snippet from page content when it matches the query better. A well-written description still wins the times it is used, and it is the text most social platforms and AI assistants show when your link is shared.

A template that works

[What the page gives you] + [who it is for] + [why it is trustworthy or free] + [action]. Example: "Free online word counter — count words, characters and reading time instantly. No signup, runs in your browser."

Why pixels beat character counts

Google measures snippets by rendered width, not characters, and characters differ enormously in width: a line of iiiiii occupies a fraction of the space of WWWWWW. Desktop snippets truncate near 920 pixels, mobile near 680.

The practical consequence is that a 158-character description full of wide capitals and numbers can be cut while a 165-character description of ordinary lowercase text survives. Treat 150–160 as guidance and front-load anyway, because that protects you regardless of rendering.

Writing descriptions that earn the click

A description competes with nine other results, so it needs to answer "why this one" in one glance. The patterns that measurably help are concrete and specific:

• Lead with the outcome — "Count words, characters and reading time instantly" beats "A tool for counting words".
• Name the differentiator: free, no signup, runs offline, no data uploaded.
• Include the query language your audience actually types, once, naturally.
• Use active verbs and second person; "paste your text and get…" reads as an invitation.
• End with a light action rather than a hard sell — search results are not ad copy.

When Google rewrites your snippet

Studies consistently find Google replaces the supplied description on a majority of queries, pulling a passage from the page that matches the search phrase more closely. That is not a reason to skip the tag; it is a reason to make sure the page body contains the phrasings people search for, because those passages become your snippet.

Rewrites also cluster around long-tail queries. Head terms usually get your written description, so the pages you care most about are the ones where the tag matters most.

The rest of the tag set

Descriptions rarely travel alone. A complete head for a content page carries a unique title, a description, a self-referencing canonical, Open Graph title, description, URL and image, and a Twitter card type. Missing Open Graph tags mean shared links fall back to whatever text a platform scrapes first, which is often navigation.

Structured data (Article, Product, Breadcrumb) does not change the description but does change how the result is displayed, which affects click-through as much as the copy does.

Auditing an existing site

Crawl the site and sort pages by description status. Fix missing descriptions on high-traffic pages first, then duplicates — templated descriptions repeated across hundreds of pages are the single most common finding on ecommerce and directory sites.

For very large catalogues, a template that interpolates real attributes ("{product} in {colour}, {size} sizes, free returns") beats both a hand-written backlog you will never finish and an identical string on every page.

Build the whole tag set at once

The Meta Tag Generator outputs SEO, Open Graph and Twitter Card tags with live character counters, so you see truncation risk before you publish.

Frequently asked questions