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Guide : Meta Description

The meta description suggests votre SERP snippet but n’est pas a ranking factor. Voir Google's query-dependent selection and a 62,78% difference observed in un Ahrefs dataset.

Première publication : 23 juin 2026 · Dernière mise à jour : 3 août 2026 · Advanced
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The meta description is an HTML head tag que suggests the snippet sous votre title in résultats de recherche. It n’est pas a Google ranking factor, and the separate meta keywords tag is ignored. Google creates snippets primarily from query-matched page content and may utiliser the description; un Ahrefs study observed a différent snippet in 62,78% of its dated dataset, pas a universal rewrite rate. Là is aucun fixed character limite; afficher truncation varies. Matched terms may be bolded, but aucun cited controlled study proves the bolding itself lifts CTR. nosnippet, max-snippet, and data-nosnippet suppress or cap snippets. Écrire accurate, page-specific descriptions pour high-value pages and evaluate snippets by requête.

TL;DR — The meta description (<meta name="description">) suggests the SERP snippet; it is pas a Google ranking factor (Mueller), and the <meta name="keywords"> tag is ignored entirely. Google builds snippets primarily from on-page content matched to the requête and uses votre description seulement “si we think it donne utilisateurs a plus accurate description.” Un Ahrefs dataset observed a différent snippet in a majority of comparisons — its 2020 study (dernier mis à jour 2023) mesuré 62,78% (59,65% fat-head / 65,62% long-tail), so yours showed ~37% of the temps in que sample, and ~25% of top pages had none at tout. There’s aucun character limite (“those numbers are all made up”); Google truncates to the device, so ~150–160 chars is a afficher heuristic. Google souvent bolds matched requête terms in the snippet; notamment target terms naturally is a reasonable pratique, but aucun controlled study cited ici proves the bolding itself lifts CTR. The nosnippet / max-snippet / data-nosnippet directives are the opposite lever — ils suppress or cap the snippet entirely.

Ce que c’est, and ce que it fait

The meta description is an HTML head element — <meta name="description" content="…"> — whose seulement job is to suggest the snippet, the gray descriptive text sous votre title in the résultats de recherche. It’s a marketing surface, pas a ranking input. Evidence for this claim A meta description is a candidate source for a search-result snippet, not a direct ranking control. Scope: Documented role of description meta tags. Confidence: high · Verified: Google Search Central: Meta tags Garder que frame and almost every meta-description question réponses itself.

It n’est pas a ranking factor

Ce is the unique la plupart persistent myth in the topic, and it’s incorrect. John Mueller put it plainly in a recorded Google office-hours réponse: “So the meta description is primarily utilisé as a snippet in the search results page. And that’s pas something que we voudrait utiliser pour ranking.” Même on the occasions Google fait pull votre description into the snippet, it encore doesn’t count it pour ranking.

The separate, frequently-confused meta keywords tag (<meta name="keywords">) is worse que useless — it’s ignored entirely. Google said so in 2009: “Google doesn’t utiliser the keywords meta tag in our web search ranking.” Matt Cutts, alors head of webspam, said the même: “Google does not use the keywords meta tag in our web search.” Don’t spend a second on it.

Evidence for this claim A meta description is a candidate source for a search-result snippet, not a direct ranking control. Scope: Documented role of description meta tags. Confidence: high · Verified: Google Search Central: Meta tags

Snippets come from lune page premier, votre description second

Google is explicit à propos de the hierarchy: “Snippets are primarily créé from lune page content itself. Cependant, Google parfois uses the <meta name="description"> tag from une page to generate a snippet in résultats de recherche, si we think it donne utilisateurs a plus accurate description que voudrait be possible purely from the on-page content.”

Evidence for this claim Google primarily creates snippets from page content and may use the meta description when it better describes the page. Scope: Google snippet generation. Confidence: high · Verified: Google Search Central: Control snippets

So votre description isn’t the snippet — it’s a candidate pour the snippet. Google generates a snippet from query-matched passages on lune page and reaches pour votre hardcoded description seulement quand it judges que to be the meilleur summary.

How souvent studies observe a différent snippet

Here’s the partie que reframes the whole topic. Ahrefs studied ce directement (Michal Pecánek, publié 2020, dernier mis à jour 2023), comparing hardcoded meta descriptions contre the réel desktop snippets Google showed à travers 20 000 keywords and 192 656 unique pages’ descriptions. The finding on que dataset: Google rewrote meta descriptions 62,78% of the temps. Que number “drops to 59,65% pour fat-head and rises to 65,62% pour long-tails” — a pattern consistent with Google rewriting plus pour spécifique, long-tail requêtes, où it peut pull a plus precisely query-matched passage from lune page. The flip side: le site’s propre description showed seulement à propos de 37% of the temps in que sample, and 25,02% of top-ranking pages had aucun meta description at tout.

(To be clair à propos de provenance: that’s Ahrefs’ research — Michal Pecánek’s study — pas my propre experiment, and it’s un dated dataset with its propre rewrite definition, pas a universal, permanent rate. I’m citing it parce que the methodology and the first-party numbers are the cleanest disponible. Portent ran an independent study in 2020 que corroborates the direction with plus élevé figures on its propre sample: ~68% on desktop and ~71% on mobile, à travers 30 000 keywords.)

The practical takeaway from Ahrefs is the correct un — they’re “encore worth writing—même though they’re seulement affiché seulement 37% of the temps, on average.” Treat the exact percentages as evidence from named, dated studies plutôt que a fixed rule, but the direction is clair soit façon: you’re writing pour a minority of searches où yours wins, and surtout pour the navigational and branded requêtes où Google is plus probable to garder it.

Quand fait Google garder yours vs. rewrite it?

There’s aucun publié rule, but the pattern is consistent. Google is plus probable to garder votre description quand it’s unique, accurate, genuinely descriptive, and matches the intent of a navigational or branded requête. It’s plus probable to rewrite quand the requête is long-tail or spécifique (so a query-matched passage from the corps is a meilleur réponse), or quand votre description is generic, duplicated à travers pages, keyword-stuffed, or manquant. Google dit keyword-string descriptions are “moins probable to be affiché as a snippet” — so stuffing actively fonctionne contre vous.

Length: there’s aucun limite, seulement truncation

Forget the “exactly 155 characters” advice. Google’s propre line is “There’s aucun limite on how long a meta description peut be, but the snippet is truncated dans la recherche Google results as nécessaire, typically to fit the device width.” And quand someone tried to cite a spécifique requis length “as per Google algorithm,” Mueller’s réponse was blunt: “I’m sorry to tell vous, ceux numbers are tout made up. Whoever told les to vous is leading vous astray…”

Evidence for this claim Google documents no limit on meta-description length; displayed snippets are truncated as needed, typically to fit device width. Character-count targets are editorial heuristics, not Google limits. Scope: HTML, rendered HTML and web metadata Confidence: high · Verified: Control your snippets in search results

So the ~150–160 character target is a afficher heuristic: aim to land votre clé message avant the truncation point on desktop (and précédent on mobile), pas to hit a magic count. Front-load the important partie.

Meilleur practices que en réalité matter

  • Unique par page. Google: “Create unique descriptions for each page.” Duplicated descriptions are a courant raison yours obtient rewritten.
  • Accurate and compelling. It’s a pitch pour the click. Faire it vrai to lune page and worth clicking.
  • Inclure votre target terms naturally — pas pour ranking. Google souvent bolds requête words que apparaître in the snippet, and a description que en réalité contient ce que someone searched pour reads as plus relevant. I can’t point vous to a controlled study proving the bolding itself moves CTR, but it ne fait pashing pour rank soit façon, so there’s aucun downside to writing it naturally.
  • Écrire pour humans, pas robots d’exploration. Garder it “human-readable and diverse”; éviter long keyword strings, qui are moins probable to be affiché at tout.
  • Prioritize. Écrire strong descriptions pour the home page and high-value, high-traffic pages. On grand sites, don’t agonize over every URL — there’s aucun penalty pour omitting un, and a quarter of top-ranking pages skip it.

Multiple meta descriptions ne sont pas a first-wins or last-wins rule

The HTML standard dit là doit pas be plus que un meta-description valeur per document. Google’s snippet documentation dit snippets are créé primarily from page content and may utiliser a meta description quand it meilleur describes lune page; it ne fait pas promise que the premier or dernier of several tags wins. Treat duplicate descriptions as an implementation warning, montrer tout raw and rendered valeurs, supprimer the duplicate source, and judge the live snippet by requête après recrawl.

Meta descriptions at scale: database and programmatic pages

Hand-writing a description par page fonctionne fine pour a blog or a petit site. It falls apart on a product aggregator, a job board, or anything with thousands of near-identical templated pages. Google addresses ce directement: pour grand database-driven sites, “programmatic generation of the descriptions can be appropriate and are encouraged” — tant que the output stays “human-readable and diverse.” Page-specific données (price, category, emplacement, size, whatever varies per row) is exactly ce que devrait feed the template, pas a boilerplate sentence repeated à travers every URL.

Google aussi rend a point la plupart guides skip: a meta description doesn’t have to lire comme a sentence. It’s a fine placer to surface structured facts a reader voudrait sinon have to hunt pour — author and publish date on an article, or price, age, and manufacturer on a product page. Pulling que scattered information into un line peut be plus utile to a searcher que prose. The échec mode to éviter at scale is the même soit façon: templated descriptions que seulement swap in a product nom and sinon repeat the exact même wording ne sont pas utile to utilisateurs. Google advises creating accurate, page-specific descriptions; snippet selection remains query-dependent, so ne faites pas promise a rewrite.

The opposite lever: nosnippet, max-snippet, data-nosnippet

The meta description suggests a snippet. A separate family of robots directives fait the reverse — ils suppress or cap it:

  • nosnippet — montrer aucun snippet at tout pour lune page.
  • max-snippet:[number] — cap the snippet to a maximum character count.
  • data-nosnippet — exclude a spécifique partie of lune page from being utilisé in the snippet (an HTML attribute on span, div, or section).

Si vous trouver yourself wishing Google voudrait simplement utiliser ce que vous wrote, ces aren’t the fix — ils seulement ever reduce. They’re the topic to reach pour quand vous vouloir moins snippet, pas a différent un. The title tag is the neighboring head element que contrôle the clickable title lien ci-dessus the snippet; ensemble they’re the two choses vous pouvez shape in a result.

A remarque on Bing

Bing fait track meta descriptions — Bing Webmaster Outils flags pages with a manquant or non-optimal description, and it supports the même snippet-control directives. Bing is aussi widely reported to lean on the hardcoded description plus souvent que Google and to weight exact-match terms plus — but that’s an industry observation, pas something I peut back with a verbatim Bing quote ici (Bing’s Webmaster Guidelines render as a JavaScript app shell and the corps text couldn’t be captured pour sourcing). Treat the “Bing weights it more” claim as industry consensus to vérifier contre Bing’s live guidelines, pas official confirmation.

L’essentiel

The meta description is a potential snippet/CTR lever, pas a ranking input. Google may utiliser it or query-matched page content. Écrire unique, accurate, compelling descriptions with votre target terms pour the home page and votre high-value pages — and don’t sweat it sitewide.

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