GTmetrix is a free tool that analyzes your page's speed performance. Using Page Speed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
- Website Audit Tool
- Freemium • Proprietary
- Online

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

Unified Web Performance that automatically tests your pages and tracks real user experiences. Automatically discovers your busiest pages and scans them weekly, providing actionable recommendations. Integrated Real User Monitoring to track the actual experience of visitors to...

Uptime.com: Real-time availability monitoring & response for preventing website downtime. Your complete website monitoring solution.

Free desktop SEO crawler - open source alternative to Screaming Frog and similar tools. Crawl websites, analyze links, extract SEO data, and export results without subscription fees.

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

A free and paid tool which analyzes both real user and synthetic data, Wattspeed will help you track your performance in time as well as giving you a glimpse about what you should do next.

Screpy is a web analysis tool that can analyze all pages of your websites in one dashboard and monitor them with your team. Powered by Lighthouse.

Get the complete picture of your website. SiteGuru crawls your entire website and shows you the full structure. Sitemaps, internal links, and canonicals: our crawler eats everything. The result: a full overview of your site, including those pages you forgot about.

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.

mod_pagespeed is an open-source Apache module which automatically applies web performance best practices to pages, and associated assets (CSS, JavaScript, images) without requiring that you modify your existing content or workflow.
ngx_pagespeed - Automatic PageSpeed optimization module for Nginx.
Performance monitoring simplified. Never let users see your website down or with bad loading speeds. Receive alerts & insights in real-time on health and performance.

With Gumlet Video, you can swiftly upload, transcode, optimize, host, and analyze videos and stream to millions in minutes. Gumlet Image optimization makes your site faster, responsive and improves UX and SEO.

Robotalp is an all-in-one monitoring solution that ensures your website's uptime and performance with 11 different monitoring functions and a status page.

365andUP's WebAnalytics is a free tool that analyzes your website's performance loading it in real browser, record it and show actionable insights which will help you optimize and be a search engine friendly website.

DebugBear monitors website performance and provides technical insight on how to improve it. The product helps customers deliver a great user experience and rank higher in Google.

Open Source Web Speed Performance Optimization and Monitoring with Lighthouse. Available as a free SaaS or run it yourself to offer a SaaS to your end-users. Simulate an actual user using Chrome to analyze the performance with Websu.

Speedrank monitors the performance of your website in the background. It displays Lighthouse reports over time and delivers recommendations for improvement. Speedrank is a paid product with 14-day-trial.

PageSpeed optimization from Google for Microsoft IIS. Speed up your website by automatically applying best practices and more.
Monitor your Google PageSpeed Insights Score and receive alerts when the score falls. Track your score over time with URL history so you can see when things changed. Scan your entire site instead of just the homepage. PageSpeedPlus.

Don't let your site visitors discover your WordPress site's issues before you do. SiteAlert monitors your site's performance, availability, broken links, broken images, blacklists, and more.

Test your site for performance and security using the SpeedFactor module — unlimited automated page speed monitoring & tracking. Track your website performance over time and keep track of how it’s doing and get tips on what to improve — no coding required.

Magento 2 Lazy Load Extension reduced the page size and improves page speed once enabled on your web-store. Due to the lazy load pictures ar 3epot loaded until being scrolled down to which considerably reduced the time especially when there are quite a lot of pictures on one...
