Free forever — just paste your URL

SEO in god mode

Q: What is LANGR?

LANGR is a free SEO engine. Paste any URL, get a full report in 60 seconds. Install the PWA and get daily push notifications. Paid plans put your SEO on autopilot: daily fixes, rank tracking, and AI content.

Q: Is the free audit really free?

Yes. No account, no credit card, no catch. Scan as many sites as you want. The free audit runs the same 29-module engine that powers paid plans.

Q: What’s the difference between free and paid?

Free: full 29-module SEO audit, AI fix instructions, PDF report, daily rescanning. Paid (from 999 DKK/mo): automatic daily fixes, rank tracking, keyword monitoring, AI content, push notifications, and much more.

Q: What credentials do you need?

For the free scan: nothing. For paid plans: Google Search Console and Analytics via OAuth. Read-only access — you control what we see and can revoke anytime.

Q: Do you touch my code or website?

No. The free audit scans your site externally — as Google sees it. Paid plans optimize meta tags via a proxy, so your code and CMS remain untouched. You stay in full control.

Q: What happens after the trial?

Your subscription starts automatically after 7 days. Cancel before, and you pay nothing — your free audit continues as always.

Q: Is my data safe?

We only analyze publicly available data from your website — the same as Google sees. All communication is over HTTPS, and we never sell your data.

Not just meta tags — real content, real fixes, real monitoring. Paste any URL to start your free audit.

Daily scansAuto-fixesRank trackingAI content

Set up once — runs itself every day

Daily SEO monitoring from €180/mo

290

checks

scores

<60s

scan time

Works with any AI

Scan it. Copy it. AI fixes it.

Get a structured SEO report in 60 seconds — paste it into ChatGPT or Claude and let AI fix every issue

audit-report.json

290 checks · 29 modules

{
  "domain": "example.com",
  "scores": {
    "overall": 73,
    "seo": 68,
    "security": 82,
    "performance": 61
  },
  "findings": [
    {
      "severity": "high",
      "module": "headers",
      "title": "Missing HSTS header",
      "recommendation": "Add Strict-Transport-Security..."
    },
    {
      "severity": "high",
      "module": "meta",
      "title": "Missing meta description",
      "recommendation": "Add a unique meta description..."
    },
    {
      "severity": "medium",
      "module": "structured-data",
      "title": "No Organization schema",
      "recommendation": "Add JSON-LD Organization..."
    }
  ],
  "...": "27 more findings"
}

ChatGPTClaudeGeminiPerplexity

Try it free — paste any URL

Start monitoring your SEO today

Automated daily scans, fixes and reports

Connect your Google credentials. We monitor, fix and report — every day.

How it works

Paste your URL

Free forever — just paste your URL

Paste any URL. Full SEO report in under 60 seconds. Always free — like using Google.

AI-ready JSON output included

See what’s broken

Starter

Your Search Console and Analytics data — delivered to your dashboard. Rankings, traffic, errors. Updated daily.

ChatGPTPerplexityGeminiClaude

Put it on autopilot

Pro

Connect your credentials. AI fixes everything daily. Daily scans, automatic fixes, push notifications.

The team behind

15 specialists. Zero humans.

LANGR is powered by named AI agents — each a specialist in their domain. They scan, fix, monitor, and optimize 24/7.

ARIA

Scan Engine

RUNE

Auto-Fix Engine

FORGE

GitHub Engineer

NOVA

Lead Discovery

LEXI

Language Specialist

SAGE

Strategist

VIGIL

Monitor

NEXUS

Network Builder

HERALD

Outreach & Mailer

SCOUT

News & Brand

LINK

Link Specialist

PRISM

Analytics

ATLAS

Indexing

PIXEL

Layout & UX

GATE

Quality Gate

Meet the full team

11-step guide

11-Step SEO Guide — The Complete Comparison

See exactly what you get with LANGR compared to agencies and DIY tools — across 11 SEO disciplines.

Discipline	Manual / DIY	LANGR Starter	LANGR Pro
Technical SEO
On-Page / Meta Tags
Content & Strategy
Linkbuilding & Crosslinks
Monitoring & Ranking
UX / User Experience
Security
AI Visibility
Layout Optimization
Multi-language
B2B Lead Discovery

Technical SEO

Manual / DIY

Starter

Pro

On-Page / Meta Tags

Manual / DIY

Starter

Pro

Content & Strategy

Manual / DIY

Starter

Pro

Linkbuilding & Crosslinks

Manual / DIY

Starter

Pro

Monitoring & Ranking

Manual / DIY

Starter

Pro

UX / User Experience

Manual / DIY

Starter

Pro

Security

Manual / DIY

Starter

Pro

AI Visibility

Manual / DIY

Starter

Pro

Layout Optimization

Manual / DIY

Starter

Pro

Multi-language

Manual / DIY

Starter

Pro

B2B Lead Discovery

Manual / DIY

Starter

Pro

Basic / manual

AI-driven / proactive

Automatic + daily + news-driven

See full comparison

What is LANGR SEO?

LANGR SEO is a free, online SEO audit tool that scans any website and delivers a complete technical SEO report in under 60 seconds. The tool runs 29 specialized modules with a combined 290 individual checks, covering everything from page speed and accessibility to security, meta tags, structured data, and crawl budget.

Each analysis generates six separate scores: performance, SEO, accessibility, best practices, security, and an overall score. Results include a prioritized list of issues with actionable recommendations, so you know exactly what to fix and in what order. Reports can be shared via link, sent as a PDF by email, or downloaded as JSON data.

75%

of users find issues they didn't know about

748%

average increase in organic traffic after fixes

67.6%

of Google's top results score above 90

LANGR SEO is built for everyone — from small business owners who want to improve their search visibility to SEO consultants and agencies that need fast technical audits of client websites. The tool requires no registration and is completely free to use. For businesses that want ongoing monitoring, we offer paid plans with daily scans, rank tracking, AI-generated fixes, and automatic optimization.

All scans run in real time directly from our servers. We use Lighthouse, Google PageSpeed Insights, and AI-powered analysis to give you the most complete picture of your website's technical health. Results are cached for 24 hours, and you can schedule daily automated scans to track changes over time.

Frequently asked questions

LANGR is a free SEO engine. Paste any URL, get a full report in 60 seconds. Install the PWA and get daily push notifications. Paid plans put your SEO on autopilot: daily fixes, rank tracking, and AI content.

Yes. No account, no credit card, no catch. Scan as many sites as you want. The free audit runs the same 29-module engine that powers paid plans.

Free: full 29-module SEO audit, AI fix instructions, PDF report, daily rescanning. Paid (from 999 DKK/mo): automatic daily fixes, rank tracking, keyword monitoring, AI content, push notifications, and much more.

For the free scan: nothing. For paid plans: Google Search Console and Analytics via OAuth. Read-only access — you control what we see and can revoke anytime.

No. The free audit scans your site externally — as Google sees it. Paid plans optimize meta tags via a proxy, so your code and CMS remain untouched. You stay in full control.

Your subscription starts automatically after 7 days. Cancel before, and you pay nothing — your free audit continues as always.

We only analyze publicly available data from your website — the same as Google sees. All communication is over HTTPS, and we never sell your data.