PageSpeed Insights is described as '(PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved' and is a Website Audit tool in the development category. There are more than 50 alternatives to PageSpeed Insights for a variety of platforms, including Web-based, SaaS, Windows, Mac and Linux apps. The best PageSpeed Insights alternative is Web Check, which is both free and Open Source. Other great apps like PageSpeed Insights are Fiddler, Google Lighthouse, Pingdom and Screaming Frog SEO Spider.
YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow is a Firefox add-on integrated with the Firebug web development tool.
Get the web's modern capabilities on your own sites and apps with useful guidance and analysis from web.dev.
United States
Domsignal is an all-in-one platform dedicated to empowering developers, SEO experts, sysadmins, and security researchers in their quest for website excellence. We provide a comprehensive suite of tools to help you analyze and optimize your website's performance, security...
United Kingdom
Free open-source website monitoring software, easy to set up and use for monitoring web sites. You can monitor single web pages, multiple web pages, pages in sitemap and even your whole web site using spider. You can check HTTP result codes and even contents of the checked pages.
Boost your SEO, speed and security: Checkbot for Chrome crawls your site to test you’re following over 50+ best practices. Test 1,000s of pages in minutes for broken links, duplicate content, invalid HTML, insecure forms, redirect chains and more.
Australia
Guardius is a Software as a Service (SaaS) company designed to streamline and automate various IT needs for companies that operate their own websites or manage their own infrastructure. It is crucial for companies to safeguard their websites and infrastructure against potential...
Singapore
The bulk version of Google's URL Inspection tool — official GSC indexation statuses for your entire site, not one URL at a time.
France
EU
Real-time uptime monitoring for Shopify stores. Get instant alerts when Stripe, Klaviyo, ShipStation, or any of your 80+ e-commerce services goes down.
WEBO Software is an innovative company focused on providing website performance solutions. Its product, WEBO Site SpeedUp, is a world leader in accelerating PHP based websites and has thousands of real installations.
