28 Free Tools

Free Website Tools

Analyze, optimize, and debug your website with our growing collection of free tools.

Er dit site klar til AI-agenter?

ChatGPT, Claude og Perplexity læser allerede dit site — eller bliver blokeret fra det. Tjek om AI-crawlere kan nå dig, om dit indhold kan læses uden JavaScript, og hvilke agent-protokoller du understøtter. Du får en karakter og rettelser, du kan kopiere direkte ind.

Tjek dit site

On-Page SEO

Meta Title & Description

Check meta tag lengths and preview search result appearance.

H1 Header Checker

Analyze H1 tags for SEO best practices.

Canonical Tag Checker

Verify canonical tags and detect indexing conflicts.

Image Alt Text Checker

Find images missing alt text for accessibility and SEO.

Schema Markup Checker

Detect structured data types and rich result opportunities.

Redirect Checker

Inspect redirect chains and HTTPS behavior.

Meta Tag Generator

Generate meta, OG, and Twitter Card markup.

hreflang Checker

Verify language alternate versions.

Content

Heading Structure Checker

Visualize full H1–H6 heading hierarchy.

Keyword Density Analyzer

Find top keywords with frequency and density.

Readability Checker

Measure Flesch Reading Ease score.

Website Word Counter

Count words, reading time, and top keywords.

Technical

Robots.txt Tester

Validate crawl directives for search engines.

llms.txt Validator

Check AI agent discoverability via llmstxt.org spec.

Sitemap Checker

Validate sitemap XML and count URLs.

Broken Link Checker

Find broken links that hurt UX and SEO.

Favicon Checker

Verify favicon and icon format coverage.

Website Down Checker

Check if a website is up or down right now.

CMS Detector

Identify WordPress, Shopify, Wix, and more.

Social & Analytics

Open Graph Checker

Preview social sharing cards for Facebook, X, LinkedIn.

Tracking Tools Checker

Detect analytics scripts, ad pixels, and tag managers.

Security

SSL Certificate Checker

Verify SSL/TLS certificate validity and expiry.

HTTP Header Checker

Inspect response and security headers.

Performance

GZIP Compression Test

Check if compression is enabled on a website.

HTML Minifier

Compress HTML for faster page loads.

JS Minifier

Minify JavaScript for smaller bundles.

CSS Minifier

Compress CSS for faster rendering.

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