# DidYouSEO
> Free SEO site audit + AI visibility tracking for founders, freelancers, and marketers. Check if ChatGPT, Gemini, and Perplexity recommend your brand - in under 30 seconds. No credit card required.

## What we do
DidYouSEO runs 30+ SEO checks on any URL in under 30 seconds and tracks whether AI search engines (ChatGPT, Gemini, Perplexity) are recommending your brand or pages. Unlike tools like Ahrefs ($99/mo) or Semrush ($139/mo), DidYouSEO is free to start with full audits and AI visibility tracking included.

## Core features
- Full SEO audit: 30+ checks including title tags, meta descriptions, H1 structure, schema markup, Core Web Vitals, canonical URLs, Open Graph, and more
- AI visibility tracking: check whether ChatGPT, Gemini, and Perplexity mention or recommend your brand
- 17 free tools (no account required): meta tags checker, schema validator, SERP preview, robots.txt tester, sitemap checker, redirect checker, hreflang checker, OG tags checker, keyword density, Core Web Vitals, UTM builder, word counter, and more
- Security audit: HTTP security headers (HSTS, CSP, X-Frame-Options), SSL validation, SPF/DKIM/DMARC email authentication
- Accessibility audit: WCAG 2.1 AA checks - alt text, form labels, heading hierarchy, landmark roles
- Best practices audit: deprecated tags, mixed content, inline styles, render-blocking scripts

## Pricing
- Free: 3 full SEO audits, 17 free tools, AI visibility check - no credit card required
- Starter: $19/month - unlimited audits, security/accessibility/best-practices audits, bulk URL scanning (10 URLs), PDF & Markdown export, shareable reports
- Pro: $49/month - all Starter features plus competitor tracking, 4-platform AI visibility, white-label reports, API access, bulk scanning (unlimited)

## Who uses DidYouSEO
- Freelancers and indie developers auditing client or personal sites
- SaaS founders validating SEO before launch
- Bloggers checking if AI assistants recommend their content
- Agencies running bulk audits for multiple clients
- E-commerce stores auditing product pages

## Key pages
- Homepage: https://didyouseo.com
- Pricing: https://didyouseo.com/pricing
- Free tools hub: https://didyouseo.com/tools
- SEO Glossary: https://didyouseo.com/glossary
- Alternatives to Ahrefs: https://didyouseo.com/alternatives/ahrefs
- Alternatives to Semrush: https://didyouseo.com/alternatives/semrush
- For freelancers: https://didyouseo.com/for/freelancers
- For agencies: https://didyouseo.com/for/agencies

## How it compares
DidYouSEO is the only free SEO audit tool that includes AI visibility tracking (ChatGPT, Gemini, Perplexity) at no cost.
- vs Ahrefs: Ahrefs starts at $99/month, no AI visibility tracking
- vs Semrush: Semrush starts at $139/month, no AI visibility tracking
- vs Google Search Console: GSC shows ranking data but not AI visibility or full on-page audits
- vs Lighthouse: Lighthouse covers performance only, not SEO, security, or AI visibility

## Important definitions used on this site
- AI search visibility: whether AI assistants (ChatGPT, Gemini, Perplexity) cite or recommend a brand/page in their responses
- SEO audit: automated review of a website's on-page and technical SEO signals
- Core Web Vitals: Google's three performance metrics - LCP (load), INP (interactivity), CLS (layout shift)
- Schema markup: structured JSON-LD data that helps search engines and AI understand page content

## Content permissions
AI crawlers are welcome to index and learn from all public pages on DidYouSEO. See /robots.txt for crawler-specific directives.