50+ checks across 5 audit categories

Everything your site
needs audited.

CrawlScope runs a real Lighthouse audit combined with deep HTML analysis via Puppeteer and Cheerio — giving you actionable findings across SEO, Performance, Accessibility, Technical Health, and Content Structure.

SEO Analysis

Deep inspection of every on-page SEO signal that affects how search engines discover, index, and rank your pages.

  • Title tag presence, length, and uniqueness
  • Meta description quality and character count
  • H1 tag validation — exactly one per page
  • Canonical tag detection and verification
  • JSON-LD structured data (Schema.org)
  • Open Graph title, description, and image
  • HTML lang attribute for internationalisation
  • robots meta tag — no accidental noindex
  • Internal link count and anchor text quality
  • HTTPS enforcement check

Performance

Full Lighthouse audit plus additional checks to identify every resource that slows your page down.

  • Render-blocking scripts and stylesheets
  • Next-gen image formats (WebP / AVIF)
  • Image optimisation and sizing
  • Text compression (gzip / brotli)
  • Browser caching and cache TTL
  • JavaScript minification
  • CSS minification
  • Unused JavaScript (KiB detected)
  • Unused CSS (KiB detected)
  • Third-party script impact

Accessibility

WCAG 2.1 Level AA compliance checks so your site works for every user, regardless of ability.

  • Alt text on all images
  • Colour contrast ratio (4.5:1 minimum)
  • HTML lang attribute
  • Valid ARIA attributes
  • Valid ARIA roles
  • Interactive elements have ARIA labels
  • Buttons have accessible names
  • Links have descriptive text
  • Form inputs have labels
  • Skip navigation link present

Technical Health

Under-the-hood technical checks that affect crawlability, security, and overall site reliability.

  • HTTPS enforced site-wide
  • HTTP 200 status code returned
  • Canonical tag present
  • Mobile viewport meta tag
  • No deprecated HTML elements
  • No vulnerable JavaScript libraries
  • Passive event listeners
  • robots.txt accessible
  • Page load time measurement
  • Page size analysis

Content Structure

Content quality signals that tell search engines your page is authoritative, well-structured, and worth ranking.

  • Title tag length (50–60 characters)
  • Meta description length (140–160 characters)
  • Heading hierarchy (H1 → H2 → H3)
  • Content length (minimum 300 words)
  • H1 and H2 tags both present
  • Internal link count (3–5 minimum)
  • Thin content detection
  • Duplicate heading detection

Screenshots

Visual captures of exactly how your page renders in real browsers — desktop and mobile — during the audit.

  • Desktop screenshot (1280px viewport)
  • Mobile screenshot (390px viewport)
  • Captured via headless Puppeteer
  • Reflects real rendering, not simulated
  • Visible in-app after every scan
  • Compare desktop vs mobile layout

How it works

01

Enter any URL

Paste in any public URL — a homepage, blog post, product page, or landing page. No login required.

02

We launch a real browser

Puppeteer spins up a headless Chromium instance and navigates to your page exactly as a real user would.

03

Lighthouse runs a full audit

Google Lighthouse analyses Performance, SEO, Accessibility, and Best Practices against the latest scoring criteria.

04

Cheerio parses your HTML

We extract every meta tag, heading, image, link, and schema element from your page source for deep SEO analysis.

05

You get a prioritised report

Issues are sorted by severity. Critical fixes come first. Every issue includes why it matters, how to fix it, and expected impact.

Export your report

Every audit can be exported in four formats — take the report wherever you need it.

Markdown

For GitHub / Notion

HTML

Standalone page

PDF

Print-ready A4

JSON

Raw data / API