seo

name seo description Optimize for search engine visibility and ranking. Use when asked to "improve SEO", "optimize for search", "fix meta tags", "add structured data", "sitemap optimization", or "search engine optimization". license MIT metadata {"author":"web-quality-skills","version":"1.0"} SEO optimization Search engine optimization based on Lighthouse SEO audits and Google Search guidelines. Focus on technical SEO, on-page optimization, and structured data. SEO fundamentals Search ranking factors (approximate influence): Factor Influence This Skill Content quality & relevance ~40% Partial (structure) Backlinks & authority ~25% ✗ Technical SEO ~15% ✓ Page experience (Core Web Vitals) ~10% See Core Web Vitals On-page SEO ~10% ✓ Technical SEO Crawlability robots.txt: # /robots.txt User-agent: * Allow: / # Block admin/private areas Disallow: /admin/ Disallow: /api/ Disallow: /private/ # Don't block resources needed for rendering # ❌ Disallow: /static/ Sitemap: https://example.com/sitemap.xml Meta robots: <!-- Default: indexable, followable --> < meta name = "robots" content = "index, follow" > <!-- Noindex specific pages --> < meta name = "robots" content = "noindex, nofollow" > <!-- Indexable but don't follow links --> < meta name = "robots" content = "index, nofollow" > <!-- Control snippets --> < meta name = "robots" content = "max-snippet:150, max-image-preview:large" > Canonical URLs: <!-- Prevent duplicate content issues --> < link rel = "canonical" href = "https://example.com/page" > <!-- Self-referencing canonical (recommended) --> < link rel = "canonical" href = "https://example.com/current-page" > <!-- For paginated content --> < link rel = "canonical" href = "https://example.com/products" > <!-- Or use rel="prev" / rel="next" for explicit pagination --> XML sitemap <?xml version= "1.0" encoding= "UTF-8" ?> < urlset xmlns = "http://www.sitemaps.org/schemas/sitemap/0.9" > < url > < loc > https://example.com/ </ loc > < lastmod > 2024-01-15 </ lastmod > < changefreq > daily </ changefreq > < priority > 1.0 </ priority > </ url > < url > < loc > https://example.com/products </ loc > < lastmod > 2024-01-14 </ lastmod > < changefreq > weekly </ changefreq > < priority > 0.8 </ priority > </ url > </ urlset > Sitemap best practices: Maximum 50,000 URLs or 50MB per sitemap Use sitemap index for larger sites Include only canonical, indexable URLs Update lastmod when content changes Submit to Google Search Console URL structure ✅ Good URLs: https://example.com/products/blue-widget https://example.com/blog/how-to-use-widgets ❌ Poor URLs: https://example.com/p?id=12345 https://example.com/products/item/category/subcategory/blue-widget-2024-sale-discount URL guidelines: Use hyphens, not underscores Lowercase only Keep short (< 75 characters) Include target keywords naturally Avoid parameters when possible Use HTTPS always HTTPS & security <!-- Ensure all resources use HTTPS --> < img src = "https://example.com/image.jpg" > <!-- Not: --> < img src = "http://example.com/image.jpg" > Security headers for SEO trust signals: Strict-Transport-Security: max-age=31536000; includeSubDomains X-Content-Type-Options: nosniff X-Frame-Options: DENY On-page SEO Title tags <!-- ❌ Missing or generic --> < title > Page </ title > < title > Home </ title > <!-- ✅ Descriptive with primary keyword --> < title > Blue Widgets for Sale | Premium Quality | Example Store </ title > Title tag guidelines: 50-60 characters (Google truncates ~60) Primary keyword near the beginning Unique for every page Brand name at end (unless homepage) Action-oriented when appropriate Meta descriptions <!-- ❌ Missing or duplicate --> < meta name = "description" content = "" > <!-- ✅ Compelling and unique --> < meta name = "description" content = "Shop premium blue widgets with free shipping. 30-day returns. Rated 4.9/5 by 10,000+ customers. Order today and save 20%." > Meta description guidelines: 150-160 characters Include primary keyword naturally Compelling call-to-action Unique for every page Matches page content Heading structure <!-- ❌ Poor structure --> < h2 > Welcome to Our Store </ h2 > < h4 > Products </ h4 > < h1 > Contact Us </ h1 > <!-- ✅ Proper hierarchy --> < h1 > Blue Widgets - Premium Quality </ h1 > < h2 > Product Features </ h2 > < h3 > Durability </ h3 > < h3 > Design </ h3 > < h2 > Customer Reviews </ h2 > < h2 > Pricing </ h2 > Heading guidelines: Single <h1> per page (the main topic) Logical hierarchy (don't skip levels) Include keywords naturally Descriptive, not generic Image SEO <!-- ❌ Poor image SEO --> < img src = "IMG_12345.jpg" > <!-- ✅ Optimized image --> < img src = "blue-widget-product-photo.webp" alt = "Blue widget with chrome finish, side view showing control panel" width = "800" height = "600" loading = "lazy" > Image guidelines: Descriptive filenames with keywords Alt text describes the image content Compressed and properly sized WebP/AVIF with fallbacks Lazy load below-fold images Internal linking <!-- ❌ Non-descriptive --> < a href = "/products" > Click here </ a > < a href = "/widgets" > Read more </ a > <!-- ✅ Descriptive anchor text --> < a href = "/products/blue-widgets" > Browse our blue widget collection </ a > < a href = "/guides/widget-maintenance" > Learn how to maintain your widgets </ a > Linking guidelines: Descriptive anchor text with keywords Link to relevant internal pages Reasonable number of links per page Fix broken links promptly Use breadcrumbs for hierarchy Structured data (JSON-LD) Organization < script type = "application/ld+json" > { "@context" : "https://schema.org" , "@type" : "Organization" , "name" : "Example Company" , "url" : "https://example.com" , "logo" : "https://example.com/logo.png" , "sameAs" : [ "https://twitter.com/example" , "https://linkedin.com/company/example" ], "contactPoint" : { "@type" : "ContactPoint" , "telephone" : "+1-555-123-4567" , "contactType" : "customer service" } } </ script > Article < script type = "application/ld+json" > { "@context" : "https://schema.org" , "@type" : "Article" , "headline" : "How to Choose the Right Widget" , "description" : "Complete guide to selecting widgets for your needs." , "image" : "https://example.com/article-image.jpg" , "author" : { "@type" : "Person" , "name" : "Jane Smith" , "url" : "https://example.com/authors/jane-smith" }, "publisher" : { "@type" : "Organization" , "name" : "Example Blog" , "logo" : { "@type" : "ImageObject" , "url" : "https://example.com/logo.png" } }, "datePublished" : "2024-01-15" , "dateModified" : "2024-01-20" } </ script > Product < script type = "application/ld+json" > { "@context" : "https://schema.org" , "@type" : "Product" , "name" : "Blue Widget Pro" , "image" : "https://example.com/blue-widget.jpg" , "description" : "Premium blue widget with advanced features." , "brand" : { "@type" : "Brand" , "name" : "WidgetCo" }, "offers" : { "@type" : "Offer" , "price" : "49.99" , "priceCurrency" : "USD" , "availability" : "https://schema.org/InStock" , "url" : "https://example.com/products/blue-widget" }, "aggregateRating" : { "@type" : "AggregateRating" , "ratingValue" : "4.8" , "reviewCount" : "1250" } } </ script > FAQ < script type = "application/ld+json" > { "@context" : "https://schema.org" , "@type" : "FAQPage" , "mainEntity" : [ { "@type" : "Question" , "name" : "What colors are available?" , "acceptedAnswer" : { "@type" : "Answer" , "text" : "Our widgets come in blue, red, and green." } }, { "@type" : "Question" , "name" : "What is the warranty?" , "acceptedAnswer" : { "@type" : "Answer" , "text" : "All widgets include a 2-year warranty." } } ] } </ script > Breadcrumbs < script type = "application/ld+json" > { "@context" : "https://schema.org" , "@type" : "BreadcrumbList" , "itemListElement" : [ { "@type" : "ListItem" , "position" : 1 , "name" : "Home" , "item" : "https://example.com" }, { "@type" : "ListItem" , "position" : 2 , "name" : "Products" , "item" : "https://example.com/products" }, { "@type" : "ListItem" , "position" : 3 , "name" : "Blue Widgets" , "item" : "https://example.com/products/blue-widgets" } ] } </ script > Validation Test structured data at: