7 Free SEO Tools Online

Free SEO tools to analyze
any domain, instantly

DNS records, WHOIS data, on-page SEO metrics, sitemap discovery, full website audits & email verification — all free, no signup, instant results.

7Free Tools
100%Free Forever
<2sAvg. Speed
Free SEO Toolkit

Everything you need to
audit a domain — for free

Seven specialized free online SEO tools covering DNS, domain registration, SEO performance, site architecture, and email deliverability.

Complete Domain Analysis

Combine DNS, WHOIS, SEO, and sitemap data into one comprehensive report. The fastest free way to understand any domain's health.

Run Free Analysis

Free Website SEO Audit

Crawl your entire website across multiple pages. Get comprehensive scoring, identify weak spots, and prioritize fixes for maximum impact.

Start Free Audit

DNS Lookup

Query A, MX, NS, TXT, and CNAME records for free. Diagnose DNS configuration issues and verify mail server settings instantly.

Lookup DNS

WHOIS Lookup

Find domain owner, registrar, registration date, expiry, and nameserver details — completely free, no account needed.

Lookup WHOIS

SEO Analysis

Analyze page titles, meta descriptions, headings, and keywords. Get free actionable SEO recommendations to boost rankings.

Analyze SEO

Sitemap Explorer

Extract every URL from a domain's sitemap for free. Discover indexed pages, spot gaps, and verify crawlability.

Explore Sitemap

Email Verification

Check if an email exists without sending a message. Free syntax validation, MX verification, and SMTP-level mailbox checking.

Verify Email
How it works

Three steps to instant
free domain analysis

No accounts, no installs, no credit card. Just enter a domain and get professional-grade SEO results.

Enter any domain

Type or paste a domain name into any of our free SEO tools. No protocol or path needed — just the bare domain.

Get instant results

Our servers query authoritative sources in real-time. DNS resolvers, WHOIS registries, and live HTML crawlers return data in under two seconds.

Act on the insights

Each report highlights issues, opportunities, and next steps. Fix DNS misconfigurations, improve SEO scores, or clean your email list — all for free.

FAQ

Frequently asked questions

Common questions about our free online SEO and domain analysis tools.

A DNS lookup queries the Domain Name System to retrieve records such as A (IP address), MX (mail server), NS (nameserver), TXT (verification & security), and CNAME (aliases). It's essential for troubleshooting connectivity, verifying email security, and confirming server migrations.
Our WHOIS tool queries authoritative domain registries to return registration details — including the owner, registrar, creation date, expiration date, and nameservers. It's invaluable for competitive research, due diligence, and identifying fraudulent domains.
It examines page titles, meta descriptions, heading hierarchy (H1–H6), image alt text, internal/external links, keyword density, and mobile responsiveness. You receive a score with prioritized, actionable recommendations.
Yes. It validates syntax, checks MX records, and performs SMTP-level verification without sending an actual email. The mailbox owner is never contacted — making it completely non-intrusive and safe for cleaning email lists.
Every tool on 530.tools is 100% free with no signup, no account creation, and no daily limits for standard queries. Professional-grade domain analysis should be accessible to everyone.
SEO Analysis focuses on a single page — its title, meta tags, headings, and content. Website SEO Audit crawls multiple pages across your entire site, scoring them collectively and identifying sitewide patterns like broken links, thin content, and missing tags.

Ready to analyze
your first domain?

Free, instant, no signup. Run a complete SEO analysis in under two seconds.

Start Free Analysis