SEO & Keywords Tools
Authoritative technical on-page diagnostics, keyword density extraction, SERP snippet simulation, and RFC 9309 robots.txt validation. Actionable ranking hygiene workflows built with zero fabricated score algorithms. Built for fast, distraction-free workflows with local processing and zero clutter.
SEO Audit
Analyze technical SEO, indexability, metadata, crawling, and structure signals in one comprehensive report.
Keyword Density Analyzer
Compute 1-word, 2-word, and 3-word n-gram frequency distributions and density percentages.
All Available Tools
19 toolsSEO Audit
Analyze technical SEO, indexability, metadata, crawling, and structure signals in one comprehensive report.
Keyword Density Analyzer
Compute 1-word, 2-word, and 3-word n-gram frequency distributions and density percentages.
SERP Snippet & Pixel Width Preview
Preview Google Search snippets on desktop and mobile with exact pixel width calculations.
Robots.txt Generator
Create and validate crawler directives for Googlebot, Bingbot, and AI scrapers.
XML Sitemap Generator
Convert lists of URLs into standard search-engine compatible XML sitemaps.
Backlink Checker
Inspect referring domains, anchor text, and index authority via verified index provider.
Domain Authority Checker
Check real authority indicators and domain age via live verified providers.
Robots.txt Tester & Validator
Test and debug crawler access rules against specific URLs using RFC 9309 path-matching logic.
Meta Tag Checker
Audit HTML meta tags, OpenGraph, Twitter Cards, robots directives, and viewport settings.
Canonical Tag Checker
Validate rel=canonical links, self-referencing consistency, protocol match, and duplicate prevention.
XML Sitemap Validator
Validate XML sitemaps and sitemap index files for schema compliance, encoding, and broken URLs.
Hreflang Generator & Validator
Generate and audit international hreflang link tags with ISO language and country code verification.
Indexability & Robots Directive Checker
Inspect meta robots tags, X-Robots-Tag HTTP headers, and canonical directives for indexing blockers.
UTM Builder & Campaign URL Generator
Construct clean, standardized campaign tracking URLs for Google Analytics 4 and advertising channels.
Keyword Extractor
Extract top keywords, keyphrases, and n-grams from text or articles with stop-word filtering.
Heading Structure & H1-H6 Checker
Audit H1-H6 heading hierarchy, detect skipped heading levels, and inspect document outlines.
Page Link Analyzer
Audit internal and external page links, nofollow attributes, anchor text, and link equity distribution.
Image SEO & Alt Text Auditor
Audit image alt attributes, explicit dimensions for CLS prevention, lazy loading, and modern format usage.
Visual Sitemap & Structure Explorer
Visualize XML sitemaps as an interactive directory tree to inspect crawl depth and URL architecture.
All tools in this collection operate independently. Whether you need immediate metrics or batch transformations, each utility loads with zero setup overhead and preserves your privacy.
We design every tool to run locally in your browser wherever computationally possible. No personal data or document contents are transmitted to external servers.
How is keyword density calculated?
We count 1-word, 2-word, and 3-word n-gram frequencies relative to total words, helping you avoid over-optimization without guessing.
Are external SEO metrics real or estimated?
We never fabricate domain authority or search volume numbers. If an external index provider is not connected, an intentional integration status is shown.