Free SEO Tools

Core Web Vitals Test

Check key performance indicators: LCP (Largest Contentful Paint), CLS (Cumulative Layout Shift), INP (Interaction to Next Paint) and TTFB.

LCP CLS INP TTFB

Mobile-Friendly Test

Check if your website is mobile-friendly. Tests viewport, responsiveness, touch elements and font sizes.

Viewport Responsiveness Touch

SSL Checker

Verify SSL/TLS certificate, security headers, HTTP to HTTPS redirect and HSTS configuration.

SSL/TLS HTTPS HSTS

Meta Tag Generator

Generate optimal SEO meta tags for your website. Preview in Google, Facebook and Twitter in real time.

Title Description Open Graph

Schema.org Generator

Generate JSON-LD structured data for rich results in Google. Supports Organization, LocalBusiness, Article, Product, FAQ and more.

JSON-LD Rich Results 8 types

Robots.txt Generator

Generate and validate robots.txt file. Set crawling rules, block paths, add sitemap references and check syntax.

Generator Validator AI Bots

Sitemap XML Validator

Validate your sitemap.xml structure, check URL count limits, detect duplicates and verify XML syntax.

XML Validation 50K URL

Schema.org Validator

Check any URL and see what structured data (JSON-LD, Microdata, RDFa) it contains, with missing-field warnings.

JSON-LD Microdata Validation

AI Visibility Checker

When people ask AI for the best tools in your niche, does it mention you? Check whether Perplexity and AI search cite your brand.

Mention rate Citation rate Share of voice

Sitemap XML Generator

Crawl your website in the background and download a ready-to-use sitemap.xml file. Supports lastmod, changefreq and priority.

Crawler XML Download

Checklista SEO

Interactive SEO checklist with 50 items to check. Auto-test SSL, meta tags, analytics, compression, caching, images and more. Progress saved in browser.

50 items 21 auto-tests localStorage

Privacy Policy Generator

Create a GDPR-ready privacy policy template for your website in a few steps. A sample document, not legal advice.

RODO / GDPR Generator

Google SERP Preview

See how your title and meta description look in Google search results on desktop and mobile - measured in pixels.

Desktop Mobile Pixels

Content Anti-Plagiarism

Compare two texts or pages with highlighted matching fragments, or scan your website for internal duplicate content and thin pages.

Similarity % Site scan Thin content

Character and Word Counter

Count characters, words, sentences and paragraphs in real time. Check SEO limits (title, meta description) and social media limits.

Characters Words SEO

WHOIS and Domain Age

Check domain registration date, expiry date, registrar, DNS servers and calculate the exact domain age.

WHOIS Domain age DNS

DNS Lookup

Check every DNS record for a domain: A, AAAA, MX, NS, TXT, SOA, CAA, DNSSEC, SPF and DMARC - with TTLs and reverse DNS.

A / AAAA / MX DNSSEC SPF / DMARC

Email Security Checker

Test your domain SPF, DKIM, DMARC and MX records and get a plain-language A–F grade. Stop spammers from spoofing your email.

SPF DKIM DMARC

301 Redirect Generator

Ready-to-paste .htaccess rules: www to non-www, force HTTPS, single URLs and full domain migration — without touching regex.

.htaccess 301 www / HTTPS

Domain Blacklist Check

Check if your domain or server IP is listed on spam blacklists (Spamhaus, SpamCop, SURBL). The #1 reason emails go to spam.

Spamhaus SpamCop SURBL

UTM Link Generator

Build correctly tagged campaign links for Google Analytics 4 — with presets for Google Ads, Facebook and newsletters.

GA4 utm_source Presets

WCAG Contrast Checker

Test text and background colors against WCAG 2.1 AA and AAA — required by the European Accessibility Act.

WCAG 2.1 AA / AAA EAA

Social Card Debugger

Preview how your links look on Facebook, Twitter/X and LinkedIn. Check Open Graph and Twitter Card meta tags.

Facebook Twitter/X LinkedIn