51 production-grade SEO tools · free forever

The complete SEO toolkit built for serious teams

Audit indexation, trace redirects, validate schema, and measure real-world performance — all from one fast, beautifully crafted interface. No sign-up. No limits.

Zero sign-up Free forever 100% private
51SEO tools shipped
0Sign-ups required
100%Free, no paywalls
<2sAverage scan time
Capabilities

Everything you need to rank higher

Built by SEO obsessives. Designed for speed, accuracy, and zero friction.

Indexation

See exactly what Google sees

Robots.txt, sitemaps, noindex directives, and X-Robots-Tag headers — audited together to give one definitive verdict on whether your page can rank.

Performance

Real network timings

DNS, TCP, TLS, TTFB and total download — measured the way browsers actually load your pages.

On-Page

17-point audit

Titles, headings, schema, canonicals — scored 0–100.

Server & SSL

Real TLS handshake

Live certificate chain, expiry, hostname match and key strength.

Links & Redirects

Trace every hop, find every break

Parallel probes across hundreds of links, full 301/302 chain visibility, and HTTP status snapshots with response headers.

The full toolkit

51 tools, one platform

Search or filter across all 51 technical diagnostics and webmaster utilities.

DEVELOPER UTILITIES12
JSON Formatter & ValidatorFormat, validate, minify and inspect JSON structures with instant syntax error locating.Developer UtilitiesText Case ConverterConvert text to Title Case, UPPERCASE, lowercase, camelCase, kebab-case, snake_case, and PascalCase.Developer UtilitiesBase64 Encoder / DecoderEncode text and images to Base64 data URIs and decode Base64 strings in real-time.Developer UtilitiesRegex Tester & ExplainerTest JavaScript regular expressions with real-time match highlights, capture groups, and presets.Developer UtilitiesMarkdown to HTML Live PreviewEdit GitHub Flavored Markdown (GFM) with live HTML rendering, raw HTML generation, and copy.Developer UtilitiesCSS Minifier & FormatterMinify and beautify CSS stylesheets with compression size metrics and download.Developer UtilitiesUUID / GUID GeneratorGenerate bulk random v4 and time-ordered v7 UUIDs with custom formatting.Developer UtilitiesCryptographic Hash GeneratorCompute SHA-256, SHA-512, SHA-384, SHA-1, and MD5 hashes in the browser using Web Crypto.Developer UtilitiesText & Keyword DeduplicatorRemove duplicate lines from text and keyword lists with sorting and trimming options.Developer UtilitiesLorem Ipsum GeneratorGenerate custom placeholder dummy text by paragraphs, words, sentences, and HTML tags.Developer UtilitiesCORS & Access-Control CheckerProbe API endpoints for Access-Control-Allow-Origin, headers, and preflight CORS compatibility.Developer UtilitiesHTML Entity EncoderConvert characters to Named, Decimal and Hex HTML entities and decode encoded markup.Developer Utilities
How it works

Get answers in three steps

01

Paste any URL

No login. No setup. Drop in the page you want to inspect.

02

Run a real-time scan

We fetch live HTML, headers, certificates, and DNS — never cached guesses.

03

Read the verdict

Scored, prioritized, and explained — copy/paste ready for your team.

“The cleanest, fastest SEO inspector I've used in years. It just shows me what's wrong without trying to sell me anything.”

Independent developerBuilt sites that rank top-3 on Google
Privacy-firstWe never store the URLs you scan.
Lightning fastAverage scan finishes in under 2 seconds.
Always freeNo paid tier. No upsells. No sign-up.
Ready when you are

Start your first scan in under 10 seconds

Paste any URL. Get a real, actionable SEO verdict. No account required.