A free SEO tool to help find the best Meta Description & Title for click through rates in the SERPs.

Check status code, response headers, redirect location and redirect chain of a HTTP connection.

Lighthouse is an open-source, automated tool for improving the quality of your web apps.

Use this free Website Speed Test to analyze the load speed of your websites, and learn how to make them faster.

The Screaming Frog SEO Spider is a desktop program (PC or Mac) which crawls websites’ links, images, CSS, script and apps from an SEO perspective.

GTmetrix is a free tool that analyzes your page’s speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.

We offer advanced analytics that measures the structure, performance and implementation quality of your website.

The world’s most comprehensive website crawler. Analyse your website architecture to understand and monitor technical issues to improve SEO performance.

Wir finden SEO soll keine Geheimwissenschaft sein. Wir wollen die Rankings bei Google transparent und verständlich machen. Das Ergebnis ist die SISTRIX Toolbox. Sie liefert alle wichtigen SEO-Kennzahlen zu jeder gewünschten Domain.

Die weltweit führende Software zur OnPage-Optimierung von Webseiten überwacht Deine Webseite auf Fehler, Ladegeschwindigkeit, und Platzierungen in den Suchmaschinen.

Die Searchmetrics Enterprise Search- und Content-Marketing-Plattform bietet Unternehmen Analysen, Empfehlungen und Prognosen zu Markt & Wettbewerbern.

Not-provided ade! Schnelle & nützliche SEO-Langzeitanalysen! Der serplorer nutzt die Google Search Console API um Dir völlig neue SEO-Insights zu geben.

Sitespeed.io is an open source tool that helps you analyze and optimize your website speed and performance, based on performance best practices. Run it locally or use it in your continuous integration.

Pingdom makes it easy to monitor your websites and servers. Get alerts when your website is down and insights to its performance and functionality.

Testomato monitors your website for problems that make your business vulnerable

This generator can be used to create, build, or generate (call it what you will) structured data markup in the form of JSON-LD that can be injected into the head or footer of your site to improve visibility to the search engines.

Allow your AngularJS, BackboneJS, or EmberJS apps to be crawled perfectly by search engines. View on Github.

Highly scalable Machine Learning API for developers building text analysis aplications.

Online HTTP/2 test – Quickly test if the URL is delivered via the new HTTP/2.0 protocol.

This extension shows a lightning icon in the address bar that’s blue if the page is HTTP/2 enabled, green if the page is SPDY enabled, and gray if neither is available.

Kraken.io is a robust, ultra-fast image optimizer and compressor with best-in-class algorithms. We’ll save you bandwidth and storage space and will dramatically improve your website’s load times.

Query search analytics, list your verified sites, manage your sitemaps, and view crawl errors for your site.

The URL Testing Tools API provides tools for running validation tests against single URLs.

Test different variations of your website and then tailor it to deliver a personalized experience that works best for each customer and for your business.

Mit BIDOX ermittelst du dich Sichtbarkeit deiner Domain innerhalb der Google Bildersuche.

A powerful GUI platform to make your API development faster & easier, from building API requests through testing, documentation and sharing.

PhantomJS is a headless WebKit scriptable with a JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas, and SVG.

SEO.js makes your AngularJS, BackboneJS or EmberJS apps crawlable by Google to make them appear in search results.

A Webpack plugin for wiring up `` (and prefetch) – supports async chunks

Easy-to-use Web Crawler and Log Analyzer for Enterprise SEO Audits and Daily Monitoring. Improve your crawlability and your rankings.

Copyscape is a free plagiarism checker. The software lets you detect duplicate content and check if your articles are original.

Crawl your website and discover valuable opportunities for SEO success.

Bing Webmaster bietet intuitive, öffentliche Tools, die Ihnen zahlreiche Möglichkeiten für die Arbeit mit Ihrer Website eröffnen.

Use Yandex.Webmaster to track statistics for queries that showed your site in search results.

Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.

Free Website Uptime Monitoring

Excel plugin for working with online marketing. Create SEO reports and dashboards. More than 100 functions for growth hacking your company to the top.

Die Seoratio-Tools nehmen die Struktur Ihrer Webseite genau unter die Lupe und verraten Ihnen alles über die Probleme und das Potenzial Ihrer Webseite.

Das W-Fragen Tool findet interessante Fragestellungen und Aspekte, die echte Nutzer tatsächlich zu deinem Keyword / Begriff bei Google suchen!

The AMP Validator will check the current page to see if it is an AMP page and then run it through the AMP validator and report if the page passes (green) or fails (red) via the extension icon.

Find out what is slowing down your site with our page speed tool.