What is a meta description checker?

A meta description checker scans a website's pages and reports the state of each meta description: whether it exists, its length, and whether it duplicates another URL's description. Some tools check one page at a time, others, like Deltio's SEO scanner, check every URL in a sitemap and repeat the check on a schedule.

How long should a meta description be?

Keep it under roughly 155-160 characters so Google does not truncate it in the SERP snippet. There is no strict minimum, but a description under 50-60 characters usually wastes the space Google gives you to sell the click.

Is the meta description a Google ranking factor?

No. Google has said for years that it does not use the meta description to rank pages. It does use it, together with the title tag, to shape what a searcher sees before clicking, which affects click-through rate rather than position.

Why does Google sometimes rewrite my meta description?

Google rewrites the snippet when it judges the written description is not relevant enough to the specific search query, pulling text from the page instead. A description that closely matches the page content and common queries is less likely to get overridden.

Does Deltio alert me if a meta description changes?

Yes. Deltio's SEO scanner compares each scan to the previous one and sends an alert by email or Slack when a meta description changes, disappears, or a duplicate appears across URLs, alongside the same checks on the title tag, canonical and hreflang.

How much does Deltio cost?

Starter is £24 a month, or £20 a month billed annually, and includes 3 manual SEO scans a day. Professional is £49 a month with 10 manual scans a day, and Enterprise is £119 a month with unlimited manual scans. All plans include a 14-day free trial.

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Meta Description Checker: Catch Missing, Truncated and Duplicate Tags

A meta description checker scans every URL on a site and reports whether the meta description is missing, too long, too short or duplicated, so CTR in the search results does not get chipped away by a defect nobody spotted. The meta description is not a Google ranking factor, but it is the ad copy for your listing: get it wrong and CTR drops, even on a page that ranks first. Google also rewrites it on its own when the existing one is not relevant to the query, one more reason to keep it tight and current. Deltio's SEO scanner checks the meta description, title tag, canonical and hreflang on every URL in the sitemap and flags what changed between scans, from £20 a month with a 14-day free trial.

Most agencies write meta descriptions once, at launch or during a content refresh, and never look again. Then a CMS update truncates a template, a migration drops the tag from a batch of product pages, or an editor pastes the same description into fifty URLs by mistake. None of that shows up in a ranking report. It shows up months later as a slow CTR decline nobody can explain.

Why the meta description still matters

Google does not use the meta description as a ranking signal. It never has. What it does, together with the title tag, is decide whether someone scrolling the SERP clicks your result instead of the three above it. A description that is missing, generic or cut off mid-sentence reads badly next to competitors who nailed theirs, and CTR takes the hit even on a page that ranks in position one.

Google also rewrites the snippet when it judges the existing description irrelevant to the query, often pulling text straight from the page instead. A description Google trusts is one it is less likely to override, so keeping it accurate matters even more than it used to.

Where meta descriptions actually break

On a handful of pages checked by hand, everything usually looks fine. Across a few hundred URLs, the same four problems keep showing up.

Missing: the <meta name="description"> tag is absent entirely. Google falls back to whatever text it pulls from the page, rarely the pitch you would have written.
Too long and truncated: past roughly 155-160 characters, Google cuts the description off mid-word in the snippet. Templates that append a fixed suffix (site name, category, price) are the usual cause.
Too short: a handful of words that do not use the space Google gives you. Common on auto-generated product pages where the field just mirrors the H1.
Duplicated: the same description copy-pasted across dozens of URLs, usually from a template default nobody customised per page.

Checking it by hand

For one page, checking is quick: right-click, view page source (or view-source: in the address bar), search for meta name="description" and read the content attribute. A browser extension that surfaces on-page SEO tags saves a step by showing it in a sidebar without opening the source.

That works for a spot check, not as a process. An agency running 20 client sites with a few hundred URLs each cannot open view-source on every page after every deploy, and nobody remembers to recheck a template six months after launch, when a developer changes it for an unrelated reason.

Why it does not scale across a client portfolio

The failure mode is rarely the initial write. It is drift: a CMS migration that resets custom fields to a template default, a new product category launched without anyone filling in the field, an agency handover where the new team does not know the old conventions. None of it trips an alarm. It shows up as CTR quietly sliding in Search Console, discovered weeks later, if at all.

How Deltio does it

Deltio's SEO scanner checks the meta description on every URL in a site's sitemap, alongside the title tag, canonical tag and hreflang. It flags the same four problems: missing, too short, too long, duplicated across URLs. Scans run automatically and also on demand, up to 10 a day on Professional, and each new scan is compared against the previous one, so a description that changed, disappeared or got duplicated after a deploy triggers an alert instead of a silent regression. That comparison is what a one-off audit cannot do, covered in our guide on SEO change alerts. It fits the workflow described in how to monitor client websites for changes, applied to on-page SEO.

Add the first site

Add a client site to Deltio and the first scan checks the meta description, title tag, canonical and hreflang across every URL in the sitemap. Starter is £24 a month, or £20 a month billed annually, with a 14-day free trial.

Frequently asked questions

What is a meta description checker?: A meta description checker scans a website's pages and reports the state of each meta description: whether it exists, its length, and whether it duplicates another URL's description. Some tools check one page at a time, others, like Deltio's SEO scanner, check every URL in a sitemap and repeat the check on a schedule.
How long should a meta description be?: Keep it under roughly 155-160 characters so Google does not truncate it in the SERP snippet. There is no strict minimum, but a description under 50-60 characters usually wastes the space Google gives you to sell the click.
Is the meta description a Google ranking factor?: No. Google has said for years that it does not use the meta description to rank pages. It does use it, together with the title tag, to shape what a searcher sees before clicking, which affects click-through rate rather than position.
Why does Google sometimes rewrite my meta description?: Google rewrites the snippet when it judges the written description is not relevant enough to the specific search query, pulling text from the page instead. A description that closely matches the page content and common queries is less likely to get overridden.
Does Deltio alert me if a meta description changes?: Yes. Deltio's SEO scanner compares each scan to the previous one and sends an alert by email or Slack when a meta description changes, disappears, or a duplicate appears across URLs, alongside the same checks on the title tag, canonical and hreflang.
How much does Deltio cost?: Starter is £24 a month, or £20 a month billed annually, and includes 3 manual SEO scans a day. Professional is £49 a month with 10 manual scans a day, and Enterprise is £119 a month with unlimited manual scans. All plans include a 14-day free trial.