SEO Implementation & Audit

Final technical SEO implementation and comprehensive audit.

Prerequisites

• All pages built and content optimized
• docs/sitemap.md and docs/seo-strategy.md exist

Workflow

1. Audit All Pages – Check every page for SEO requirements
2. Generate Technical Files – sitemap.xml, robots.txt
3. Add Schema.org – JSON-LD structured data
4. Configure Social – Open Graph, Twitter cards
5. Final Verification – Comprehensive checklist

Full Site Audit Checklist

Per-Page Verification

For EACH page in docs/sitemap.md, verify:

Content:

• H1 contains primary keyword
• Only ONE H1 per page
• H2/H3 include secondary keywords
• Keyword density 1-2%
• Minimum 300 words content

Meta Tags:

• Title tag 50-60 characters
• Title contains primary keyword
• Meta description 150-160 characters
• Meta description has CTA

Images:

• All images have alt text
• Alt text is keyword-relevant
• Images are optimized (WebP)

Links:

• Internal links to key pages
• No broken links
• Anchor text is descriptive

Technical SEO Files

sitemap.xml (app/sitemap.ts)

import { MetadataRoute } from 'next'

export default function sitemap(): MetadataRoute.Sitemap {
  const baseUrl = 'https://domain.com'

  return [
    { url: baseUrl, lastModified: new Date(), changeFrequency: 'weekly', priority: 1 },
    { url: `${baseUrl}/leistungen`, lastModified: new Date(), changeFrequency: 'monthly', priority: 0.8 },
    // All pages from docs/sitemap.md
  ]
}

robots.txt (public/robots.txt)

User-agent: *
Allow: /
Disallow: /api/
Disallow: /_next/

Sitemap: https://domain.com/sitemap.xml

Schema.org Structured Data

Add to layout or pages:

LocalBusiness (Homepage):

{
  "@context": "https://schema.org",
  "@type": "LocalBusiness",
  "name": "Company Name",
  "address": {
    "@type": "PostalAddress",
    "streetAddress": "Street",
    "addressLocality": "Zürich",
    "postalCode": "8000",
    "addressCountry": "CH"
  },
  "telephone": "+41 XX XXX XX XX",
  "url": "https://domain.com",
  "priceRange": "$$"
}

Service (Service Pages):

{
  "@context": "https://schema.org",
  "@type": "Service",
  "name": "Webdesign",
  "provider": { "@type": "LocalBusiness", "name": "Company" },
  "areaServed": "Zürich",
  "description": "Service description"
}

FAQPage (FAQ Sections):

{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [{
    "@type": "Question",
    "name": "Question?",
    "acceptedAnswer": { "@type": "Answer", "text": "Answer" }
  }]
}

Open Graph & Twitter

Add to page metadata:

export const metadata: Metadata = {
  title: 'Page Title | Brand',
  description: 'Description with keyword',
  openGraph: {
    title: 'Page Title | Brand',
    description: 'Description',
    url: 'https://domain.com/page',
    siteName: 'Brand',
    images: [{ url: '/og-image.png', width: 1200, height: 630 }],
    locale: 'de_CH',
    type: 'website',
  },
  twitter: {
    card: 'summary_large_image',
    title: 'Page Title',
    description: 'Description',
    images: ['/og-image.png'],
  },
}

Final Ranking Checklist

Technical:

• sitemap.xml generated and accessible
• robots.txt allows crawling
• SSL certificate active (HTTPS)
• Mobile responsive
• Page speed < 3 seconds
• No console errors

Content:

• All pages have unique title tags
• All pages have unique meta descriptions
• All H1s are unique and keyword-optimized
• No duplicate content
• No thin content (< 300 words)

Structured Data:

• LocalBusiness schema on homepage
• Service schema on service pages
• FAQPage schema on FAQ sections
• BreadcrumbList schema (optional)

Social:

• Open Graph images created (1200×630)
• OG tags on all pages
• Twitter card tags on all pages

Output

• app/sitemap.ts created
• public/robots.txt created
• Schema.org components added
• OG images configured
• All pages verified for SEO compliance