SEOWebChecker - Technical SEO & On-Page Analyzer

SEOWebChecker is a lightweight, high-performance technical SEO audit and analysis module engineered natively for Drupal 10 and Drupal 11.

It empowers Drupal content authors, marketing teams, and enterprise digital agencies to identify on-page SEO regressions, validate heading structures, ensure image accessibility compliance, and optimize Core Web Vitals directly within the Drupal administration interface.

Powered by the SEOWebChecker technical SEO analysis platform.

⚡ Key Features

Administrative Audit Dashboard: Audit your homepage, content routes, or staging URLs under Configuration : Search and metadata : SEO Web Checker (/admin/config/search/seowebchecker).
Comprehensive 0–100 Scorecard: Calculates overall on-page score alongside letter grades (A+ through F).
Node Pre-Publish Sidebar Widget: Injected into node creation/edit forms so authors can evaluate SEO health prior to publishing.
Title Tag Diagnostics: Validates presence and optimal character length (30–60 characters).
Meta Description Linter: Ensures description length fits within search snippet thresholds (70–160 characters).
Heading Hierarchy & Duplicate H1 Detection: Detects missing H1 tags and warns against duplicate H1 tags.
Image Accessibility (Alt Attributes): Flags content images missing alt attributes.
Canonical Link Tag Validation: Verifies self-referential canonical tags.
Mobile Viewport & Core Web Vitals: Ensures mobile-first indexing compliance and checks for zoom-disabling flags.
OpenGraph & Twitter Card Cards: Validates social sharing preview tags.
Schema.org JSON-LD Syntax Check: Verifies structured data JSON syntax for Google Rich Snippets.
1-Click Export: Export full diagnostic reports to Markdown or JSON.

📦 Requirements

Drupal 10.x or Drupal 11.x
PHP 8.2 or later

For site-wide automated crawls and Core Web Vitals monitoring: SEOWebChecker.com