Meta Tag Checker for a Whole Site

What it does

Check the title, meta description and Open Graph tags on every page of a site in one run, not one URL at a time. Give it a homepage or an XML sitemap. For each page it reports titles and descriptions that are missing, too long or reused on other pages, and pages with no og:title, og:description or og:image, each with a fix. The same run also checks canonicals, headings, robots directives and internal links.

Open the Actor on Apify

What it flags

Check	Severity	When
`title.missing`	error	No `<title>` element
`title.empty`	error	The title element is there but empty
`title.too_long`	warning	Longer than 60 characters
`title.too_short`	warning	Shorter than 10 characters
`title.duplicate`	warning	The same title is used on more than one audited page
`description.missing`	warning	No meta description, or an empty one
`description.too_long`	warning	Longer than 160 characters
`description.duplicate`	warning	The same description is used on more than one audited page
`opengraph.title_missing`	notice	`og:title` is absent or empty
`opengraph.description_missing`	notice	`og:description` is absent or empty
`opengraph.image_missing`	notice	`og:image` is absent or empty

60 and 160 characters are rules of thumb, not Google limits: Google cuts titles and snippets by display width and sometimes rewrites them. A duplicate finding lists every page that shares the text, so you can fix them together.

Input and output from a real run

We set up eight demo pages on this site, each with one meta tag fault (or none), and ran the Actor on them on Apify on 2026-10-01 (run f0JILBZEZDzR8rjj3). It found each fault: the correct page came back clean, and each of the other seven got the finding its name describes.

Input JSON

{
  "startUrls": [
    { "url": "https://lintlab.dev/demo/meta/ok/" },
    { "url": "https://lintlab.dev/demo/meta/title-missing/" },
    { "url": "https://lintlab.dev/demo/meta/title-too-long/" },
    { "url": "https://lintlab.dev/demo/meta/description-missing/" },
    { "url": "https://lintlab.dev/demo/meta/description-too-long/" },
    { "url": "https://lintlab.dev/demo/meta/og-missing/" },
    { "url": "https://lintlab.dev/demo/meta/duplicate-a/" },
    { "url": "https://lintlab.dev/demo/meta/duplicate-b/" }
  ],
  "discoverSitemap": false,
  "maxPages": 8,
  "checkLinks": false
}

For a whole site, give only the homepage and leave discoverSitemap on: the Actor finds the sitemap through robots.txt or /sitemap.xml.

Output excerpt: one of the two pages sharing a title and description

{
  "url": "https://lintlab.dev/demo/meta/duplicate-a/",
  "status": 200,
  "title": "Meta tag demo: duplicate | lintlab",
  "findings": [
    {
      "checkId": "title.duplicate",
      "severity": "warning",
      "message": "This title is used on 2 audited pages.",
      "fix": "Write a unique title for each indexable page.",
      "value": [
        "https://lintlab.dev/demo/meta/duplicate-a/",
        "https://lintlab.dev/demo/meta/duplicate-b/"
      ]
    },
    {
      "checkId": "description.duplicate",
      "severity": "warning",
      "message": "This meta description is used on 2 audited pages.",
      "fix": "Write a unique meta description for each indexable page.",
      "value": [
        "https://lintlab.dev/demo/meta/duplicate-a/",
        "https://lintlab.dev/demo/meta/duplicate-b/"
      ]
    }
  ]
}

Run summary excerpt

{
  "pagesAudited": 8,
  "counts": { "error": 1, "warning": 7, "notice": 3 },
  "topIssues": [
    { "checkId": "description.duplicate", "count": 2 },
    { "checkId": "title.duplicate", "count": 2 },
    { "checkId": "description.missing", "count": 1 },
    { "checkId": "description.too_long", "count": 1 },
    { "checkId": "opengraph.description_missing", "count": 1 },
    { "checkId": "opengraph.image_missing", "count": 1 },
    { "checkId": "opengraph.title_missing", "count": 1 },
    { "checkId": "title.missing", "count": 1 },
    { "checkId": "title.too_long", "count": 1 }
  ]
}

Price and limits

$0.004 per successfully audited page ($4 per 1,000 pages). Internal link checks aren't charged. Pages that fail or return an error status are reported but not charged.

Up to 5,000 pages per run.
Reads the HTML the server sends. It doesn't run JavaScript, so tags added only by client-side script won't be seen.
Checks that the Open Graph tags are present, not that the og:image loads or has the right size. Twitter/X card tags aren't checked.
Measures length in characters, not pixels.
For sites you own or are allowed to audit.

When a free tool is better

To see how one URL's link preview looks on a social network, and to refresh a cached preview, use that network's own tool: Facebook Sharing Debugger or LinkedIn Post Inspector. They're free and show the actual card. This Actor is for checking every page of a site at once, any public site, with JSON you can diff between runs or check in CI. Background: Google on title links · Google on meta descriptions and snippets · the Open Graph protocol.