SEO Tools

Complete 2026 guide to Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift. Measurement, optimisation playbooks per metric, budgets and weekly workflow.

Practical guide to Web Workers in 2026: heavy compute offload, streaming data, OffscreenCanvas, transferable objects, SharedArrayBuffer, Comlink, INP measurement with code samples.

A practical guide to the Core Web Vital that replaced FID. 12 INP killers, DevTools profiling, production case study from 480ms to 120ms, 12-point checklist with code snippets. Mobile-first.

Generate valid Schema.org JSON-LD for the 11 rich-result types Google supports in 2026: Product, Article, FAQPage, HowTo, Recipe, Course, JobPosting, LocalBusiness, Event, Review and BreadcrumbList. Best-practice checks, copy script tag.

Test any URL for the 2026 Core Web Vitals: INP, LCP, CLS, FCP, TTFB. Field data from Chrome User Experience Report plus Lighthouse lab. Mobile and desktop side by side,...

Design Open Graph and Twitter share-card images (1200x630 PNG) live in your browser. Six templates, Canvas preview, Facebook / LinkedIn / Twitter / Slack mockups, download as PNG. No upload.

Generate an llms.txt and llms-full.txt for your site. Curated Markdown index that helps AI agents (ChatGPT, Claude, Perplexity, Gemini) find the right page on your domain. Live preview, token cost,...

Generate a robots.txt that blocks the AI crawlers used by ChatGPT, Claude, Gemini, Perplexity, Meta AI, Apple Intelligence and Common Crawl. EU AIA opt-out preset, Nginx and Apache server blocks,...

Domain Health Check: DNS, WHOIS, SSL, HTTP, Robots and Sitemap AuditRun a complete domain health snapshot from one input: DNS records, WHOIS availability, SSL expiry, HTTP status, robots.txt sitemap discovery...

Technical SEO Audit Tool: Crawlability, Metadata, Schema, Links, Robots and Sitemap ChecksRun a compact technical SEO audit for a live URL. The tool combines server-side page extraction, robots.txt discovery, sitemap...