SEO Audit: On-Page Checker for Any List of URLs

Check the on-page SEO of many pages at once. For each URL you get a score from 0 to 100, a clear list of issues (errors, warnings, notices) and all the facts behind them: title and meta description length, H1 and heading structure, canonical, noindex, language, mobile viewport, image alt texts, word count, internal and external links, Open Graph, structured data (JSON-LD), HTTPS and load time.

• ✅ Bulk audits: paste your sitemap URLs or a client's key pages
• ✅ Real browser: JavaScript-rendered content and tags are checked as Google sees them after rendering
• ✅ 22 checks with plain-English messages, ready for client reports
• ✅ Structured data types (Organization, Product, Article, FAQPage …) and invalid JSON-LD detection
• ✅ Fair billing: pages that fail, error pages and pages excluded by robots.txt are free

Checks

Severity	Checks
Error	missing title, missing meta description, missing H1, noindex (meta or X-Robots-Tag), no mobile viewport, invalid JSON-LD, no HTTPS
Warning	title under 30 or over 60 characters, description under 70 or over 160, several H1s, no lang attribute, images without alt, under 300 words, mixed content, load time over 3 s
Notice	no canonical or canonical to another URL, no Open Graph title or image, no structured data, no favicon

The score starts at 100 and loses 12 points per error, 5 per warning and 1 per notice.

Input example

{ "urls": ["https://apify.com", "https://books.toscrape.com/"] }

Output example

Real output from a test run:

{
    "url": "https://books.toscrape.com/",
    "finalUrl": "https://books.toscrape.com/",
    "score": 80,
    "issues": [
        {"code": "no_description", "severity": "error", "message": "The page has no meta description."},
        {"code": "no_canonical", "severity": "notice", "message": "The page has no canonical URL."},
        {"code": "no_og", "severity": "notice", "message": "Open Graph tags (og:title, og:image) are missing; shared links look plain."},
        {"code": "no_structured_data", "severity": "notice", "message": "No structured data (JSON-LD) found."},
        {"code": "mixed_content", "severity": "warning", "message": "The HTTPS page loads images, scripts or styles over plain HTTP."}
    ],
    "issueCounts": {"error": 1, "warning": 1, "notice": 3},
    "statusCode": 200,
    "redirected": false,
    "title": "All products | Books to Scrape - Sandbox",
    "titleLength": 40,
    "metaDescription": null,
    "metaDescriptionLength": 0,
    "h1": ["All products"],
    "headingCounts": {"h1": 1, "h2": 0, "h3": 20, "h4": 0, "h5": 0, "h6": 0},
    "canonical": null,
    "metaRobots": "NOARCHIVE,NOCACHE",
    "lang": "en-us",
    "hreflang": [],
    "wordCount": 308,
    "images": 20,
    "imagesWithoutAlt": 0,
    "linksInternal": 94,
    "linksExternal": 0,
    "openGraph": {"title": null, "description": null, "image": null, "type": null, "url": null},
    "twitterCard": null,
    "structuredDataTypes": [],
    "loadTimeMs": 237,
    "htmlBytes": 5576,
    "auditedAt": "2026-10-23T14:30:22.998Z"
}

A summary per URL is saved as OUTPUT in the key-value store.

Pricing

A fixed price per audited page. In our tests 6 pages took 26 seconds with the default 2 GB memory.

Paid Apify plans pay less: 10% off on Starter, 20% on Scale and 30% on Business and higher plans.

FAQ

Is this a full site crawler? No, it audits the pages you list. Take the URLs from your sitemap or analytics to audit a whole site.

Why do images with alt="" not count as missing? An empty alt is the correct way to mark decorative images. Only images without any alt attribute are reported.

Why is a page "blocked_by_robots"? By default the Actor respects robots.txt. Turn off Respect robots.txt only for your own sites or with the owner's permission.

More tools from Tidelane Data

• Lighthouse Audit: bulk PageSpeed, Core Web Vitals and SEO scores
• Broken Link Checker: find 404s, redirects and dead links
• Sitemap Extractor: all URLs of a website from its sitemaps, with lastmod
• Accessibility Checker: WCAG 2.2, EAA and ADA audits with axe-core
• Tech Stack Detector: CMS, frameworks and technologies of any website

All our tools: apify.com/tidelane

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Impressum

Levi Griesinger, Tidelane Data
Besigheimer Straße 18
74369, Löchgau, Deutschland
E-Mail: LeviGriesinger@gmail.com