Alternatives to GTmetrix

Compare GTmetrix alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to GTmetrix in 2026. Compare features, ratings, user reviews, pricing, and more from GTmetrix competitors and alternatives in order to make an informed decision for your business.

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    Uptime.com

    Uptime.com

    Uptime.com

    Uptime.com provides comprehensive, unified visibility into the availability and performance of critical services. Monitoring tools empower engineering, operations and SRE teams to maintain oversight of their web stack and respond to outages through customizable alerting channels. Uptime.com offers a broad set of monitoring capabilities, including web, network, and email. API and transaction checks offer synthetic monitoring to perform multi-step validations of critical flows and services. Monitor public and private resources through a unified interface that streamlines configuration and alerting. Set up and customize Status Pages with your company branding to communicate incidents and maintenance to both customers and internal teams. Provide a single-page overview that shows your overall service health at a glance. Robust and customizable SLA reporting allows stakeholders to stay informed on incidents and downtime.
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  • 2
    Imagify

    Imagify

    Imagify

    Imagify is a powerful and easy-to-use WordPress plugin designed to optimize images and speed up your website. It automatically compresses, resizes, and converts images to modern formats like WebP and Avif with just one click. Created by the team behind WP Rocket, Imagify guarantees improved website loading times without sacrificing image quality. It enhances key performance metrics such as Google PageSpeed scores and Core Web Vitals. Imagify is ideal for users who want a quick and efficient way to compress large image files in bulk without any technical knowledge. Overall, it helps businesses improve SEO, user experience, and conversions by making images lighter and faster to load.
    Starting Price: $4.99 per month
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    Google PageSpeed Insights
    Make your web pages fast on all devices. PageSpeed Insights analyzes the content of a web page, then generates suggestions to make that page faster.
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    SolarWinds Pingdom
    SolarWinds® Pingdom® is a powerful and affordable SaaS-based web app performance monitoring solution. It’s one product providing comprehensive web app performance and user experience monitoring consisting of four major capabilities: 1. Uptime monitoring for webpages and other critical components like APIs, CDNs, DNS, networks, email, and more 2. Page speed performance monitoring and page rankings 3. Synthetic transaction monitoring from the simplest to the most complex transactions 4. Real user monitoring (RUM), enabling a deeper and wider understanding of the user’s digital experience, and web application availability and performance
    Starting Price: $164.45/year
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    Rigor Monitoring & Optimization
    The Rigor Digital Experience Monitoring platform combines the power of synthetic monitoring with an intelligent optimization engine to help you find, fix and prevent website performance and user experience issues.
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    Request Metrics

    Request Metrics

    Request Metrics

    Request Metrics makes web performance easy with real-user monitoring and automated Lighthouse testing—helping you boost Core Web Vitals, SEO, and user experience. Track real visitors, not just lab tests, with automatic noise cancellation, actionable insights, and detailed element attribution. Our scheduled Lighthouse tests detect regressions before they hurt rankings, while real-user data keeps you informed on how your site performs in the wild. Filter by page, device, region, or vendor to uncover performance bottlenecks, and get instant alerts when something slows down. With built-in vendor tracking, you’ll know exactly which third-party scripts are hurting your load times. No complicated setup, no code changes—just fast, reliable performance monitoring designed for modern websites. Get started for free today!
    Starting Price: $34 per month
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    WebPageTest

    WebPageTest

    WebPageTest

    Test your user’s real experience with global locations, modern devices, and the latest browser versions. Correlate your user’s visual experience to the technical measurements of your site. Dive into the anatomy of your webpage with components like DNS, TCP, TLS, and more. The WebPageTest code is free to use under the Polyform Shield license, a source-available license. As long as you are not creating a product or service that competes with Catchpoint’s offerings then you are free to do whatever you like with the WebPageTest code, including using it for your own internal use or creating non-competing commercial products from it. In fact, we encourage using the WebPageTest code to build your own value-added applications.
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    Auditzy

    Auditzy

    Auditzy

    Auditzy brings you reports in a few clicks, while most page speed tools require detailed setup and supervision. With Auditzy, businesses understand their web page performance, accessibility, and Technical SEO insights across multiple technical parameters to enhance visitor interactivity experience for websites. These checks highlight opportunities to improve the performance of your web app. Auditzy offers a free web page speed test through a simple and user-friendly graphical interface to provide a quality performance report. With Auditzy, gain insights and suggestions about your performance metrics and how to improve them in business terms. Auditzy insights are not just limited to your website. You can also deep dive into competitive analysis and compete in a smarter way with your competitors. Auditzy™ provides comparative analysis across multiple portfolios to understand and overcome your shortcomings.
    Starting Price: $5 per month
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    Blocksy

    Blocksy

    Blocksy

    Build your next web project visually in minutes, without coding skills. Blocksy is lighter and faster than most similar WordPress themes. Feels fast and numbers confirm that, it is ranked at the top in most speed testing tools. Built from scratch to be 100% compatible with the Gutenberg editor and blocks. Load JavaScript behavior when you really need it using web pack’s support for dynamic imports. Easily build and customize your online store in minutes and start selling like a pro. Blocksy is ready to be translated into any language and doesn’t contain hardcoded strings. Every single line of code is thoughtfully written and is open to changes and new features. Customizer changes are synced in real-time in the preview window without slowing your work flow. Surprise your mobile users by giving them a unique experience while they navigate. Blocksy was built and designed to work with the best WordPress page builders out there, just start creating your most ambitious designs.
    Starting Price: $49 per year
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    DebugBear

    DebugBear

    DebugBear

    DebugBear is a web performance monitoring tools that helps companies keep their website fast and pass Google's Core Web Vitals assessment. Find out how to optimize your website and get alerted when there's a problem. Run scheduled synthetic tests, monitor data from Google's Chrome User Experience Report (CrUX), and collect real user analytics directly on your website. Track Google Lighthouse scores over time and benchmark against your competition. Get custom performance recommendations with detailed analysis, and quickly try out performance optimizations with page speed experiments – without deploying any code!
    Starting Price: $125/mo
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    WP Rocket

    WP Rocket

    WP Rocket

    WP Rocket is much more than just a WordPress caching plugin. It’s the most powerful solution to boost your loading time, improve your PageSpeed score, and optimize your Core Web Vitals. WordPress experts recommend WP Rocket as the best WordPress caching plugin to achieve incredible speed results and optimize your website for the Core Web Vitals. Let’s see why. Discover high performance like never before. Thanks to WP Rocket, you can instantly see a great improvement in your website performance and Google PageSpeed Insights score — including Core Web Vitals. Designed for WordPress and constantly updated to keep up with the latest web performance requirements, WP Rocket not only speeds up your loading time, it also dramatically improves your overall website performance to help you address the most important PageSpeed Insights recommendations.
    Starting Price: $49 per year
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    RabbitLoader

    RabbitLoader

    RabbitLoader

    RabbitLoader is a WordPress Plugin that helps improve PageSpeed Score. Slow Websites are the worst thing and we have the perfect plugin for your WordPress website. Optimize your Website’s Google PageSpeed Score with RabbitLoader’s CDN, CLS and Lazy Loading. Improve your Page Speed Score with RabbitLoader.
    Starting Price: $9.99 per month
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    HTMeLd

    HTMeLd

    Gammadyne Corporation

    HTMeLd accelerates your website by eliminating references to external files. It scans your HTML pages to determine what images, style sheets, and scripts that each page depends on. Then it loads those resources and embeds them directly into the page. When a visitor downloads the page, their browser will not need to make additional downloads, the page will display almost instantly. This also improves your Google "Page Experience" score, and therefore your Google rank. There is no easier way to gain competitive advantage in Google search results. We recommend installing the free trial, and performing a before and after test using Google's PageSpeed Insights. Look past the "Discover what your real users are experiencing" section as this is data accumulated for the last month from Chrome users, and will not improve instantly. In the "Diagnose performance issues" section, you should see a large improvement with all speed metrics.
    Starting Price: $30/month/user
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    Monitor.us

    Monitor.us

    Monitor.us

    Monitor.Us is a free, cloud-based IT systems monitoring service that provides comprehensive visibility into your website, server, network, and application performance. Its all-in-one dashboard allows you to monitor website uptime and response times, server health, network performance, and custom metrics from anywhere, facilitating quick identification and resolution of issues affecting your online presence. The platform offers features such as full-page load monitoring, which assesses how long it takes to load a complete HTML page in real browsers, and mobile monitoring, enabling you to stay informed on the go with alerts sent to your Android and iOS devices, as well as via text and email. Monitor.Us supports various protocols, including HTTP, HTTPS, PING, DNS, SMTP, POP3, IMAP, TCP, UDP, and ICMP, ensuring comprehensive monitoring capabilities. It provides instant failure alerts through email, instant messaging, SMS, or live voice, and offers detailed reporting.
    Starting Price: Free
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    VeloPress

    VeloPress

    UnitedOver, LLC

    VeloPress is a powerful WordPress performance optimization plugin built to improve website speed, Core Web Vitals, and overall user experience without complicated setup. Unlike traditional caching plugins, VeloPress gives you granular control over plugin CSS and JavaScript loading on a page-by-page basis, helping eliminate unnecessary bloat and improve load times. Features include smart image optimization, JS bundling, Redis database caching support, CDN integration with fail-safe protection, heartbeat control, XML-RPC security hardening, and a real-time PageSpeed dashboard inside WordPress. VeloPress also uses cloud-powered optimization to offload heavy processing tasks from your server, keeping sites fast and stable even on shared hosting. Ideal for developers, agencies, WooCommerce stores, and businesses focused on performance.
    Starting Price: $59/year/site
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    ShortPixel

    ShortPixel

    ShortPixel

    A faster loading page means a more pleasant user experience, better search ranking and as a result, more page views. ShortPixel uses advanced compression technology that reduces image size without affecting the quality, thus making your pages load faster.
    Starting Price: $9.99 per month
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    Plerdy

    Plerdy

    Plerdy

    Plerdy - Multifunctional SaaS solution for an improvement of conversion on websites. - Heatmaps - we see exactly where the clicks were on the website. All clicks on the website are recorded and displayed in real time. Which helps to understand how users behave on the website. - Popup smart forms - you can quickly create and show on the website different pop-up forms without developers and designer. Examples: The pop-up form for collecting leads from the website. Offer to the users when they abandon their shopping cart. - SEO-alerts - tool that continuously analyzes your website SEO factors to provide regular notifications on changes. Checks keywords, titles, tags and attributes to define what can be optimized. Provides both aggregated and on-page statistics to evaluate your web resource.
    Starting Price: 29$/month
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    StatusCake

    StatusCake

    StatusCake

    StatusCake.com is a free website monitoring service ensuring that website owners are alerted the moment their website goes down or is experiencing problems. StatusCake premium plans allow multiple websites to be monitored (300 on the Business plan), as well as selecting the global location from where uptime is tested from. Additional features include page-speed testing, domain monitoring, server monitoring, SSL monitoring, as well as virus and malware scanning. We'll keep an eye on your website performance for you in the background. Website downtime happens. We'll send you a notification letting you know when it does. Sit back. Relax. Focus on your business. Let us worry about your uptime. Website monitoring that does all the hard work for you. We’ll alert you when your website goes down. With 30 second check rates and 30 different countries to monitor from, you’re in safe hands.
    Starting Price: $24.99 per month
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    redirection.io

    redirection.io

    redirection.io

    redirection.io is a complete suite for optimizing your website traffic, user experience and SEO efficiency. It logs all the HTTP traffic of your website, displays nice dashboards to find errors and fix them in minutes. It is really fast and resilient, and can be installed on your infrastructure, without the need to target your DNS to the service. It also features a website crawler for paid plans, which allows to find and fix issues in a matter of minutes. Setup HTTP redirections The "redirection assistant" helps building simple or complex redirection rules, which won't break your legitimate traffic. It is possible to test the impacts of newly created rules before they are published and applied to any production website. Advanced SEO rules: redirection.io allows more than just redirections. The "actions" allow to override meta tags for a given page or a set of pages, add structured data, or completely manage the response headers!
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    PageSpeedPlus

    PageSpeedPlus

    PageSpeedPlus

    PageSpeedPlus is a real-time website performance monitoring tool that tracks Core Web Vitals, runs automated Lighthouse audits, and sends instant alerts when metrics fall below target. Designed for agencies, developers, and site owners, it helps identify performance issues before they impact SEO, conversions, or user experience. Tests run frequently using real browser conditions across desktop, mobile, or custom devices, with alerts delivered via Slack, Microsoft Teams, email, or webhook. PageSpeedPlus stores unlimited test history, making it easy to visualize long-term trends, pinpoint regressions, and generate white-label reports. Integrations with Zapier, REST API, and CI/CD pipelines enable seamless workflow automation—automatically blocking slow deployments or triggering rollbacks when site speed drops. With global testing locations, detailed diagnostics, and customizable thresholds, PageSpeedPlus makes it easy to stay compliant with Google's Core Web Vitals and deliver a
    Starting Price: $20/month
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    PageRadar

    PageRadar

    PageRadar

    PageRadar is a comprehensive SaaS platform for automated website monitoring and SEO health tracking, combining multiple monitoring tools into a unified dashboard. Core Features: Performance Monitoring: Track Google Core Web Vitals (LCP, CLS, FCP, TTFB, INP) with custom threshold alerts powered by Google PageSpeed Insights API. SEO Change Detection: Monitor HTML elements including title tags, meta descriptions, headings, Schema.org markup, and Open Graph tags. Detects Product schema changes (pricing, availability) with intelligent diff analysis and email alerts. Search Rank Tracker: Monitor keyword positions across Google, Bing, and Yandex in 167+ countries. Track SERP features (Featured Snippets, AI Overview) with position threshold alerts. Uptime Monitoring: Track HTTP status codes, SSL certificates, and detect downtime with instant notifications. Affiliate Link Validator: Test affiliate links across 167 countries using geo-targeted proxies.
    Starting Price: 29$/month
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    SiteOps

    SiteOps

    SiteOps

    SiteOps monitors your Joomla, WordPress and PrestaShop sites 24/7: downtime, SSL certificates, DNS, WHOIS/domain expiry, SEO score, security, backups and server metrics. Key features: - Uptime checks every 30 seconds from 8 worldwide locations - SSL/DNS/WHOIS monitoring with expiry alerts - Security: HTTP headers, Safe Browsing, brute-force detection - SEO score, Core Web Vitals, PageSpeed - Backups: Akeeba (Joomla) & UpdraftPlus (WordPress) - Server metrics: PHP, MySQL, load, TCP ports, IP reputation - Native agents for Joomla 4/5/6, WordPress, PrestaShop Alerts via Email, SMS, Slack, Telegram, Discord, Teams, Webhook. Multi-site dashboard for agencies. White-label available. GDPR-compliant, European hosting. Plans from €10 to €79/month — 10-day free trial.
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    Speedrank

    Speedrank

    Speedrank

    Say goodbye to slow websites with website optimization powered by Speedrank. Our ongoing web performance monitoring analyzes your sites loading times and creates actionable to‑do lists that increase your page speed. Speedrank helps you identify potential for improvement by automatically creating audits, reporting and sending it to you regularly via email. Speedrank helps you to formulate and prioritize tasks by simply marking them in the dashboard and exporting a meaningful to-do list. Speedrank helps you to document successes by comparing the new reports to the old one after implementing an improvement. Speedrank uses Google's own technology and sees your page as Google sees it. The basis of the Speedrank analyzes is Google Lighthouse, an analysis tool for developers. Lighthouse analyzes web pages on request once and gives extensive, detailed reports. Speedrank analyzes web pages automatically and continuously and translates the technical findings into clear tasks.
    Starting Price: €9 per month
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    TwicPics

    TwicPics

    TwicPics

    TwicPics delivers perfectly sized media in real-time to your websites and apps to provide the best possible experience to all your end users. Your web pages load super-fast, no matter the device and the connection. Easy to set up, up, and fast to deploy, TwicPics makes image processing a breeze with its low-code responsive image solution. Your data transfers reduce by up to 94% while your images load 3x faster. Stop compromising visual quality and web performance. With TwicPics, your website is fast and beautiful, always. Perfectly sized images for any device, any connection in real-time. Images are resized, cropped & compressed in milliseconds. Reduce image size by up to 75%, with no loss of quality. Intuitive API and efficient front-end library, with a minimal footprint. Images load faster with worldwide CDN proximity. Stop managing multiple versions of the same picture anymore. With TwicPics, you just need the largest, most detailed master.
    Starting Price: €99 per month
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    ManageWP

    ManageWP

    GoDaddy

    A better way to manage WordPress websites. In minutes set up ManageWP and add your first website. With one click run all updates and create your first backup for FREE. Automate your workflow and start saving time. Automate your daily tasks with our one click login and bulk updates for all of your websites. Secure your data with reliable backups and protect your website with regular security checks. Stay on top of things and monitor your websites with Uptime Monitor, SEO and Google Analytics. Use collaborate tool for your teams and clients. One click switch between the accounts. Take your client care to a new level with our Client Reports and White Label tool. Optimize your website performance and speed with our Performance Check. Optimize your website performance and speed with our Performance Check. Take your client care to a new level with our Client Reports and White Label tool.
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    WebYes

    WebYes

    WebYes

    Increase your team’s efficiency by eliminating dependencies on multiple tools. Uncover all critical issues with just a click. Manage it all from a simple, unified platform, cutting down hundreds of hours of repetitive work. High-performing websites make clients happy, boost engagement, and build trust in your agency’s expertise. Strong accessibility ensures inclusivity, expands audience reach, and enhances client satisfaction for web agencies. High-quality web development builds trust, reduces issues, and elevates client confidence in agency services. Effective SEO drives visibility increases traffic, and delivers measurable results for web agency clients. Optimize your website management process with our all-in-one audit and monitoring tool for improved efficiency. WebYes is a free audit and monitoring tool that scans your website and identifies issues. It provides a detailed report highlighting key areas of improvement after the scan.
    Starting Price: $59 per month
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    Revalin

    Revalin

    Revalin

    Revalin is an AI-powered tool designed for comprehensive website analysis and optimization. It automatically scans your site for technical issues, evaluates keyword performance, analyzes backlinks, and compares your site to competitors. Revalin also delivers weekly reports with actionable insights and recommendations to help improve your site's visibility and performance.
    Starting Price: $20 per month
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    LoadFocus

    LoadFocus

    LoadFocus

    All-In-One cloud testing platform for load testing and performance testing, website speed testing, website UI testing, mobile applications and API endpoints. Easy upload and run JMeter tests from multiple cloud locations with thousands of users. Inspect real-time performance metrics for your Website and APIs with Apache JMeter from the cloud. Monitor changes over time and get advice on how to reduce page load times. We run your tests from cloud instances at scheduled times and notify you if something goes wrong. Load your websites and web pages in mobile emulators and inspect screenshots to find potential rendering issues, invalid HTML, missing images, wrong CSS. Schedule runs and inspect rendered images on all devices in just seconds. Emulate your site across different screen sizes and resolutions. Generate screenshots of two websites in just seconds and compare the generated screenshots by a threshold to check differences.
    Starting Price: $24 per month
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    Modular DS

    Modular DS

    Modular DS

    Modular DS makes it easy to manage and monitor multiple WordPress websites, helping freelancers and agencies save time, avoid repetitive work, and focus on growing their business. Instead of relying on multiple plugins and tools, it allows you to automate your maintenance tasks from a single, intuitive dashboard. Key features include bulk and safe updates, backups, restores, performance checks, uptime monitoring, vulnerability scans, and database optimization. Modular DS also lets you generate automated maintenance reports that clearly show clients the work you do. It integrates with Google Analytics, Search Console, WooCommerce, and PageSpeed, giving you an overview of your sites in one place and letting you include the data your clients care most about in your reports. The platform offers a 14-day free trial, transparent subscription plans, and regular new features based on user feedback.
    Starting Price: $16/month
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    Magic Toolbox

    Magic Toolbox

    Magic Toolbox

    Enjoy responsive image zoom by default. No need for complex configuration, it fits every page perfectly. Magic Zoom Plus is 100% compatible with all websites. It works beautifully with or without jQuery or other 3rd party libraries. Control how Magic Zoom Plus initializes & loads images. Choose to activate on page load or on request (lazy load). Vital for high ranking in search engines, Magic Zoom Plus supports SEO friendly URLs. Do you have plenty of product images but don't know how to fit them all in? Magic Scroll lets you display all your product images in an elegant and intuitive way. Our responsive slider will make the experience effortless for both mobile and desktop users. Magic Slideshow is responsive out of the box. Essential for multi-device adaptation.
    Starting Price: $39.78 one-time payment
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    Jetpack for Wordpress
    Security, performance, and marketing tools made for WordPress sites by the WordPress experts. Always-on Security. Real-time backups save every change, while instant downtime alerts and one-click restores get you back online quickly. Malware scanning and one-click fixes keep your site ahead of security threats. Automatically block spam from comments and forms. Built-in Performance. Load pages faster, and serve your images and static files from our global network of servers. Improve your site speed and take control of your SEO with Jetpack’s site accelerator. Shorter load times can lead to happier readers, more page views, and, if you’re running a store, improved sales. Code-free Customization. Jetpack Search helps your visitors instantly find the right content, so they buy more products and stay on your site longer. Seamlessly embed rich content and videos, deliver them all at high speed, with an ad-free experience.
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    Ghostery Insights
    Validate tracking scripts, ensure pages are optimized before launching your campaign and improve ROI. Test, troubleshoot and optimize how tags and scripts are implemented on a website. Gather intelligence and analytics about the tags and trackers on your website or others. Identify privacy risks that may impact user security, page performance and violate compliance law. Real-time visualization of each tracker’s behavior as page loads. The tracker list provides a deep dive into what trackers and scripts are operating on a website. Privacy-related statistics and usage trends for specific trackers and websites.
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    Borlabs Cache
    Just activate Borlabs Cache and the speed of your website will increase immediately. Choose from our cache templates e.g. E-Commerce, and Borlabs Cache is automatically optimized for your online store. All your pages will be cached and saved in milliseconds. Fast loading pages are essential for improving your search engine optimization. Our cache preloader ensures that your content is always up to date and your website is loaded super fast. Merges JavaScript and CSS to single files and sends them compressed to your visitors. Removes the unnecessary whitespace and HTML comments in your page and optimizes the embedding of Google Fonts. This reduces the size and loading time of your website. Allows you to execute PHP code or dynamic content in cached pages. Useful when displaying banners, shopping baskets or other information that is constantly changing.
    Starting Price: €29 per 1 website
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    Hyperping

    Hyperping

    Hyperping

    Combining reliable uptime and performance monitoring, hosted status pages & incident management all in one tool. Receive instant alerts when downtime occurs and collect performance metrics. Communicate incidents and maintenances to your users in beautifully simple status pages. Collaborate with developers and customer support to resolve issues together. Create incidents, add real-time updates and change your services status to keep your users in the loop. Instantly alert your team and communicate incidents with the integrations you love. Publish updates about incidents or maintenances and send notifications to your users. Set a password to share an internal status page with your teammates and collaborators. Arrange your monitors, status pages and teammates into specific projects. Change the method, parameters or headers of your HTTP monitors. Setup internal status pages and protect them with a password.
    Starting Price: $79 per month
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    UpTimeTools

    UpTimeTools

    UpTimeTools

    UpTimeTools.net is a comprehensive website monitoring service trusted by thousands to ensure unmatched uptime, speed, and reliability for websites and APIs. The platform offers real-time monitoring of website availability, API performance, and user experience through features like synthetic monitoring, real user monitoring (RUM), and private location monitoring. It provides instant multi-channel alerts via phone, email, SMS, and Slack to enable rapid response to downtime incidents. Users can create custom status pages to communicate incident updates and maintenance schedules transparently. UpTimeTools.net supports over 80 global monitoring locations and offers unlimited integrations and user accounts on premium plans. With detailed reporting and customizable dashboards, businesses gain critical insights to optimize website performance and customer experience.
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    eSIMo

    eSIMo

    eSIMo

    eSIMo.io – The Ultimate eSIM Solution for Global Connectivity eSIMo.io is a leading provider of digital eSIM solutions that enable travelers, businesses, and remote workers to stay connected without the need for physical SIM cards. Our platform offers instant activation, affordable data plans, and seamless global coverage across 200+ countries. 🌍 Key Features & Functionality of eSIMo.io 1️⃣ Instant eSIM Activation Purchase an eSIM online and receive a QR code instantly via email. No need to wait for shipping or visit a store. Activate your eSIM in minutes by scanning the QR code on a compatible device. 2️⃣ Wide Device Compatibility Works with iPhones (iPhone 15, 14, 13, 12, XS, XR, SE 2nd Gen & newer). Supports Samsung Galaxy S24, S23, S22, Z Flip, Fold, and Note 20 Ultra. Compatible with Google Pixel (Pixel 4 and newer), iPads, laptops, and smartwatches.
    Starting Price: $3.90
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    Lighthouse
    You can run it against any web page, be it public or require authentication. It has audits of performance, accessibility, progressive web apps, SEO and more. You can run Lighthouse in Chrome Devtools, from the command line, or as a Node. You simply give Lighthouse a URL to audit, it will run a series of audits against the page, and then generate a report on how good the page was. From there, use the audits that have failed as pointers on how to improvise the page. Each audit has a reference doc explaining why the audit is important, as well as how to fix it. Lighthouse Viewer requires the JSON output of a Lighthouse report. The following list explains how to get the output in JSON format depending on which Lighthouse stream you are using.
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    Uptimia

    Uptimia

    Uptimia

    Website performance monitoring service from 171 worldwide checkpoints, on six continents. Monitor the uptime of HTTP, HTTPS, DNS, UDP, TCP, email and more. Checks are performed as often as every 30 seconds, from 171 checkpoints! Monitor full website performance by loading it with a real Chrome browser. Receive reports on loading speeds or alerts if something goes wrong. Monitor web transactions (login forms, check-out forms, etc.) and be notified if something goes wrong. Find out where the problem has occurred precisely! Monitor the speed of user experience for visitors to your website. Receive detailed reports on loading speeds by country, browser, OS and more.
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    Downtime Monkey

    Downtime Monkey

    Big Toe Web Design

    Downtime Monkey monitors your web pages and checks whether they are up or down. Set up monitors in seconds - simply add the URL (web address) of the webpage and start monitoring. Free accounts enable monitoring of up to 60 web pages. Pro accounts enable the monitoring of up to 1000 web pages. If your website goes down an email is sent to alert you. Email alerts can be turned on or off individually for each monitor. With Free accounts, all emails are sent to the email address of the account holder. Pro users can register multiple email addresses and select a different email address for each monitor. SMS alerts are an optional extra for Free account users while Pro accounts include free SMS credits with annual subscriptions. Custom alert scheduling is available to Pro users for both SMS and email alerts.
    Starting Price: $0.73 per month
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    Loado

    Loado

    Loado

    Loado tracks and analyzes the performance of your websites. We use Core Web Vitals and User Timings to do this, and we alert you on time if there are any problems. This allows you to keep your website running smoothly and efficiently. Analytics are collected from real users using Web Vitals, this is real data that you get instantly. By using granular analytics from Loado, developers could optimize application performance for specific pages, device types, or even geographic regions. The page performance becomes an important ranking signal for Google. A faster site means a higher ranking position which tends to lower marketing costs. Core Web Vitals are a set of website metrics that consider speed, responsiveness, and visual stability. Just add one script tag to the Head section and start collecting the data.
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    wao.io

    wao.io

    wao.io

    wao.io works like a CDN and continuously optimizes the loading time and security of your shop. No plugins and no developers are necessary. At wao.io, we host all data in Germany and guarantee full GDPR compliance. wao.io makes sure that every newly added landing page and every new image is automatically optimized on the fly. By using wao.io you will continuously reduce efforts as well as costs and keep your website up to date now and long-term. wao.io is the platform that continuously optimizes the security and performance of your website. Watch your successes and configure the optimization features in your personal control panel. wao.io optimizes page size, images, and code structure of your website. Download and render times improve immediately. And all of that without any code changes. wao.io adds a layer of security to your website to avoid vulnerabilities. You and your users will benefit from the additional protection from attacks.
    Starting Price: €29 per month
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    SiteTrak

    SiteTrak

    SiteTrak

    SiteTrak is website monitoring that actually helps you fix things. Point it at your sites and it keeps watch around the clock - uptime, page speed, SSL certificates, domain and DNS, SEO, and security - all in one place. The moment something breaks, you get an alert by email or webhook. But where most monitors stop at it down SiteTrak goes further: every alert comes with a plain diagnosis of what changed and a copy-paste fix, so you are not left guessing at 3am. Multi-region checks mean you only get pinged for real outages, not false alarms. Add a one-line beacon to any site and you ll see real visitor performance - load times, errors, and slow pages - not just lab numbers. Everything rolls up into a single 0-100 health score per site so you always know where you stand. Whether you run one site or manage two hundred for clients, SiteTrak gives you one dashboard to know your sites are healthy.
    Starting Price: $9.95/month
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    Hexometer

    Hexometer

    Hexact, Inc

    Based on AI technology the Hexometer™ monitoring service periodically scans over 2800 data points on your website to make sure your digital assets are in pristine condition. The monitoring service continuously checks your website and informs you in case of any erosion to its health. It will also give you tips and tricks on how to improve your website’s hygiene, ultimately improving your online visibility and performance. Your website is how the world sees your business. But If that first impression is a slow or broken website, that first visit will be their last. Unlike traditional uptime monitoring platforms that just tell you when your website is down, Hexometer is like having your very own QA team, continuously monitoring your website across six core areas including availability, performance, user experience, health, SEO, and security. Get real-time notifications when issues are detected via email, SMS, Slack, Telegram & Trello.
    Starting Price: $8.25 per month
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    Site Qwality

    Site Qwality

    Site Qwality

    Site Qwality is a website monitoring service that helps businesses track their online infrastructure. Site Qwality provides comprehensive monitoring tools including uptime tracking, multi-location performance checks, error code diagnostics, and real-time alerts through various channels like email, SMS, Slack, and webhooks. Site Qwality covers critical aspects such as website availability, cron job execution, page speed, SSL/TLS status, and API performance. By offering instant notifications and detailed error reports, Site Qwality enables businesses to quickly identify and address technical issues, minimize downtime, and maintain consistent online operations. Site Qwality is designed for developers, system administrators, DevOps teams, and business owners who need reliable, detailed insights into their digital infrastructure's health and performance.
    Starting Price: $6.99/month
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    Speedchecker CloudPerf
    Every online business should already be using a selection of network monitoring tools that monitor uptime and performance. Traditional synthetic monitoring tools rely on testing your endpoints from agents run in the data centers. Only CloudPerf, which runs on our global network of real-user devices, gives full end-to-end visibility into performance issues. Performance analysis does not stop with just a page load time. You can drill down to individual resources using waterfall charts or export the HAR file to your favorite analyzer tool. Monitoring full page load is invaluable to test 3rd party dependencies and their impact on your performance in different locations. Every destination that is monitored by CloudPerf can have multiple alerts with different uptime and performance thresholds. Once those thresholds are breached CloudPerf will alert your contacts for further escalation.
    Starting Price: $114 per month
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    CheqUptime

    CheqUptime

    CheqUptime

    CheqUptime helps you monitor your website or software, notifies you on emergencies, and allows you to build confidence in your product via a beautiful status page. We check your monitors from multiple locations around the world. Request method, request body, basic auth & custom request headers. Set & expect a certain response from your monitors. Receive weekly email reports on uptime and performance. Every status page you create gets useful and ready-to-go analytics – Views, countries, devices, operating systems and more.
    Starting Price: $14.99 per month
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    WP Smush
    Optimize your images, turn on lazy load, resize, compress and improve your Google Page Speed with the incredibly powerful and 100% free WordPress image smusher/compressor, brought to you by the superteam at WPMU DEV! And whether you spell it ‘optimize’ or ‘optimize’, Smush will compress all your images without a visible drop in quality and optimize your page speed using its unique compression algorithm.
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    Simology

    Simology

    Simology

    Simology is a global eSIM marketplace that makes it easy for travellers to stay connected anywhere in the world. We offer instant data plans for over 200 countries and regions, with no physical SIM card required.How it works: purchase a plan on our website or app, receive a QR code instantly via email, scan it with your phone, and you're connected to reliable local networks within minutes. No need to visit a shop, swap SIM cards, or pay expensive roaming charges.Our plans start from just $1.50, with options ranging from 1GB to unlimited data across flexible durations. We support all major eSIM-compatible devices including iPhone, Samsung Galaxy, Google Pixel, and more.Founded in 2024, Simology serves travellers, digital nomads, and business professionals worldwide.
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    Watchman Tower

    Watchman Tower

    Watchman Tower

    Watchman Tower is an all-in-one platform for real-time website monitoring, server monitoring, and status page management. Instantly detect downtime, SSL certificate issues, and domain status changes to ensure your digital assets are always online and secure. With seamless integrations to Slack, Email, SMS, and Webhooks, you’ll never miss a critical alert. Our intuitive dashboard provides advanced uptime graphs, performance analytics, response time tracking, and fully customizable public status pages. Designed for website owners, developers, IT teams, and businesses of all sizes, Watchman Tower scales with you — offering a powerful free plan and feature-rich premium options.
    Starting Price: $5.99/month
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    Siteimprove

    Siteimprove

    Siteimprove

    Turn your website into an asset as it was meant to be with Siteimprove. Siteimprove is an all-in-one website management software designed to help businesses solve today's most demanding website challenges. With Siteimprove, businesses get access to tools that allow them to optimize content quality and design, boost search engine traffic, comply with data privacy requirements, and track website performance--all from a single platform.