Free SEO Tools

Score how ready your site is for AI agents. Checks AI crawler access, content without JavaScript, llms.txt, structured data and 19 more signals.

See which AI crawlers your robots.txt lets through, with the exact rule behind every verdict.

Check whether your domain appears in Common Crawl, the open web corpus used to train language models.

Score a page on how easily an AI answer engine can quote and cite it, with deterministic checks and a fix for each.

Check your robots.txt file for crawling and indexing issues.

Validate your XML sitemap for protocol compliance and errors.

Extract all URLs from any XML sitemap instantly.

Check if a page is blocked from search engine indexing via noindex tags or headers.

Count all indexed pages on any website by discovering and parsing XML sitemaps.

Check redirect chains, HTTP status codes, and detect redirect loops or 302 vs 301 issues for any URL.

Generate a valid XML sitemap from a list of URLs, ready to download and submit to search engines.

Generate robots.txt files with AI crawler directives for GPTBot, ClaudeBot, and PerplexityBot.

Generate hreflang tags for international SEO multilingual and multi-regional websites.

Check HTTP status codes for up to 100 URLs at once. Perfect for migration audits and broken page detection.

Validate rel=next/prev patterns and paginated canonicals on any URL. Detect missing, broken, or misconfigured pagination signals.

Find crawl traps caused by filter parameters and faceted navigation. Detect URL parameter explosions that waste crawl budget.

Detect repeating URL parameters, session IDs, and infinite crawl traps in your site URLs. Paste a URL list or enter a sitemap URL.

Compare HTML sitemap against XML sitemap and crawl set to find coverage gaps.

Build a page-level indexability matrix showing robots.txt, meta robots, X-Robots-Tag, and canonical status.

Flag mismatches between HTML canonical, HTTP header canonical, and sitemap URL references.

Bulk-check URLs for accidental noindex directives. Detect noindex drift across your site from sitemap or URL list.

Find sitemap URLs that are blocked by robots.txt rules. Detect conflicts between your crawling directives.

Test robots.txt Disallow and Allow patterns against a URL list before deployment. Preview the crawl impact.

Validate noindex/nofollow directives set in X-Robots-Tag HTTP headers. Compare header vs meta robots tags and detect conflicts.

Detect thin or error-like pages returning HTTP 200 status code. Analyze word count, 404 phrases, title tags, and content-to-HTML ratio.

Find indexable pages with canonical tags pointing to different URLs. Detect canonical chain conflicts and broken canonical targets.

Catch canonical chains and loops across page sets. Follow canonical tags up to 10 hops to detect circular references, broken targets, and chain issues.

Score indexation risk of URL parameter combinations. Detect tracking params, session IDs, sort/filter params, and check for canonical/noindex protection.

Analyze changefreq and lastmod patterns in your XML sitemap to spot stale content and update frequency issues.

See your website the way Googlebot sees it. Check meta tags, links, headers, and rendered content.

Analyze keyword density on any web page. See word frequency, n-gram distribution, and optimize your on-page SEO.

Analyze a page for Experience, Expertise, Authoritativeness, and Trustworthiness signals with scored recommendations.

Extract and analyze all meta tags from any URL with Essential, Social, and Technical completeness scores.

Extract and visualize the H1-H6 heading hierarchy of any page with SEO issue detection.

Analyze all images on a page for missing alt text, file sizes, formats, and lazy loading attributes.

Analyze the text-to-code ratio of any page to identify thin content or code-heavy pages.

Analyze page word count and content depth to identify thin content that may hurt SEO rankings.

Scan images for missing, duplicate, and generic alt text. Detect SEO issues at scale.

Identify duplicate H1 tags across multiple pages of your website. Crawl via sitemap or URL list and find sitewide H1 conflicts.

Detect skipped heading levels and malformed hierarchy on any page. Visualize the heading tree and get fix recommendations.

Track presence of required entities across key SEO elements. See which entities appear in title, headings, meta description, body, links, and images.

Audit image filenames for SEO best practices. Check descriptiveness, hyphens vs underscores, keyword relevance, and filename length.

Count paragraphs, sentences, words, and characters in your text with reading time estimates.

Count words in visible body content of any web page, excluding navigation and scripts.

Turn any public page into clean Markdown with front matter — ready to paste into an LLM or a docs repo.

Preview how your pages appear in Google search results with real-time title and description character counters.

Mock up a Google responsive search ad on desktop and mobile, with live character counts against Google’s 30, 90 and 15-character limits.

Check and preview Open Graph and Twitter Card tags from any URL with Facebook and Twitter card previews.

Create professional 1200×630 OpenGraph images for social media previews. Design with templates, text, backgrounds, and logos — download as PNG.

Measure rendered title tag width in pixels to predict Google SERP truncation.

Measure meta description pixel width to predict Google SERP snippet truncation.

Validate Twitter/X card meta tags from any URL and preview how your card will render.

Generate proper canonical tags for multiple URLs to prevent duplicate content issues.

Generate clean, SEO-friendly URL slugs from titles or text with transliteration and stop word removal.

Extract and analyze all links on any web page, identifying dofollow, nofollow, UGC, and sponsored attributes.

Scan any URL for broken internal and external links with HTTP status codes and anchor text.

Audit internal links on any page. Analyze anchor text distribution, dofollow vs nofollow ratio, link depth, and get recommendations.

Validate link placement within semantic context. Check anchor text quality, surrounding text relevance, and link accessibility across any page.

Map URL depth distribution from your sitemap and flag deep pages that may be hard to crawl.

Build a directed graph of internal links with in-degree and out-degree stats per page.

Estimate clicks from homepage to each URL using crawl graph BFS traversal.

Compare crawl results with sitemap URLs to identify orphan page candidates.

Analyze anchor text diversity and spot over-optimized or generic anchor patterns.

Audit your URL folder hierarchy for consistency and topical grouping. Visualize your site's URL taxonomy from a sitemap or URL list.

Validate breadcrumb schema markup and on-page breadcrumb alignment. Check BreadcrumbList JSON-LD against visible breadcrumbs and URL hierarchy.

Audit sitewide footer links for overuse, relevancy issues, and SEO best practices.

Analyze navigation menu links to measure prominence vs page importance and spot SEO opportunities.

Identify category or taxonomy pages with low internal link references from your sitemap.

Detect path-level near-duplicate URLs including trailing slash, case, and parameter variants.

Scan all links on a page and categorize as dofollow, nofollow, UGC, or sponsored with distribution stats.

Extract and validate JSON-LD, Microdata, and RDFa structured data from any URL with Rich Results eligibility.

Map which schema types exist across site sections. Crawl via sitemap or URL list to visualize structured data coverage and find missing schema markup.

Validate required/recommended fields by schema type. Check JSON-LD structured data for missing properties that prevent rich results.

Generate JSON-LD structured data for Google Sitelinks Search Box with ready-to-paste markup.

Generate valid JobPosting JSON-LD schema markup for Google job listing rich results.

Verify your favicon meets Google's requirements for search results.

Extract and download all favicon variants from any website.

Inspect HTTP response headers for security, caching, and SEO issues.

Check SSL certificate status, expiry date, and HTTPS configuration including HSTS and redirect verification.

Detect the CMS, JavaScript frameworks, analytics tools, CDN, and hosting provider of any website.

Look up A, AAAA, CNAME, MX, TXT, NS, and SOA DNS records for any domain.

Check when any domain expires. Live registry lookup with days remaining, registrar and status codes.

Get an overall website quality score covering SEO, performance, security, and accessibility with actionable recommendations.

Check any domain's Ahrefs Domain Rating (DR) for free — a 0-100 score of backlink authority, powered by the official Ahrefs API.

Generate .htaccess redirect rules for Apache servers with 301 and 302 redirects.

Build UTM tracking URLs for campaign analytics with live parameter breakdown.

Build a direct write-a-review link from a Place ID, or pull the ID out of a Google Maps URL. Runs in your browser, no API key.

Turn a Google review link or Place ID into a print-ready QR code. Vector SVG sized in millimetres, four-module quiet zone, no upload.

Generate Lorem Ipsum placeholder text for design and development in paragraphs, words, sentences, or lists.

Convert keywords into Google Ads match types — broad, phrase, exact, and negative. Paste your keyword list and get properly formatted match type syntax instantly.

Wrap keywords in Google Ads match type symbols — broad, phrase, exact, and negative formats in bulk.

Generate all keyword combinations from multiple lists. Create permutations for PPC campaigns and SEO keyword expansion.

Generate a properly formatted Google Disavow file from a list of toxic backlink URLs and domains.

Convert JSON data to CSV format online. Supports nested objects, custom delimiters, and bulk data.

Calculate click-through rate from clicks and impressions with industry benchmarks by channel.

Calculate CPM and cost per impression from ad spend and impressions, or find how many impressions a budget buys.

Calculate cost per click from ad spend and clicks, solve for cost or clicks, or derive CPC from CPM and CTR.

Calculate return on ad spend from revenue and ad spend — as a ratio, a multiple and a percentage, with ACOS. Or solve for revenue or spend.

Find the ROAS you have to beat from your gross margin, or from price and COGS — with break-even ACOS, max CPA and max CPC.

Calculate social media engagement rate by followers, reach, impressions, or per post — all four formulas side by side.

Calculate Instagram engagement rate by followers, reach or views, with the right formula for Reels, carousels and Stories.

Calculate TikTok engagement rate by video views — TikTok's own formula — plus by unique viewers and followers, with and without favourites.

Calculate Facebook engagement rate by followers, reach or views, with two sourced benchmarks that divide by two different things.

Calculate YouTube engagement rate by views, subscribers or unique viewers, with a sourced 2026 benchmark and no dislikes field, because YouTube took it away.

Work out how many 5-star reviews it takes to raise your Google rating, calculate your score from a star breakdown, and see what one 1-star review costs.

Calculate SEO return on investment, break-even point, and projected returns over 12 months.

Calculate CLV from purchase value, frequency, and lifespan with retention scenarios.

Calculate recommended marketing budget allocation across channels based on revenue goals.

Calculate cost per lead from campaign spend and leads with industry benchmarks.

Calculate CPA from marketing spend and acquisitions with industry and channel benchmarks.

Create professional SEO proposal PDFs with pricing tables, service scope, and competitor analysis. White-label with your agency branding.

Estimate your SEO investment based on business size, competition, and scope. Compare DIY, freelancer, and agency costs.

Generate 10 targeted blog post ideas from your business description.

Create SEO-optimized blog outlines with H2/H3 structure.

Identify keyword cannibalization issues where multiple pages compete for the same keywords. Get severity ratings and fix recommendations.

Two modes in one tool: classify keywords by intent, funnel, modifier, and content type, or cluster them into topical groups by shared terms.

Compare your keywords against competitors to find gaps, overlaps, and opportunities. Get priority recommendations for which keyword gaps to fill first.

Generate comprehensive SEO content briefs with headings, word count targets, and key topics using AI.

Generate a complete topical map with pillar pages, cluster content, and supporting articles for any niche using AI.

Generate optimized meta descriptions with character counts and quality scores.

Generate FAQ sections with FAQPage schema markup, optimized for AI extraction.

Generate SEO-optimized title tags with CTR scores and AI visibility ratings.

Score headlines for emotional impact, SEO value, and AI extractability.

Generate Google Ads headline variations with AI, optimized for RSA best practices and 30-char limits.

Six ad variants for Google, Meta, LinkedIn or X — each a different angle, each measured against the real character limits.

Generate compelling CTA button text and supporting copy with AI for any page type and goal.

Generate value proposition statements in multiple frameworks like Jobs-to-be-Done and Before/After/Bridge.

Generate diverse, natural anchor text variations for internal and external links with AI-powered distribution recommendations.

Generate SEO-optimized meta titles with character counts, power words, and keyword placement analysis using AI.

Generate all essential SEO meta tags including title, description, Open Graph, Twitter Card, and canonical tags using AI.

Generate JSON-LD schema markup from page content with AI recommendations.

Generate a professional favicon with AI. Get 5 custom designs from your brand description, then refine with the visual designer. Download as PNG at any size.

Generate SEO-optimized alt text for images using AI. Get concise, descriptive, and keyword-rich suggestions.