What is the Lumar SEO Tool?
Lumar is an enterprise-grade website optimization platform designed to enhance technical SEO, site speed, and accessibility at scale. Formerly known as Deepcrawl, Lumar is particularly suited for large websites with complex structures, such as e-commerce platforms and media sites.
At its core, Lumar offers an ultra-fast, serverless web crawler capable of processing up to 450 URLs per second. This enables comprehensive audits of websites with thousands or even millions of pages, identifying issues like broken links, redirect chains, duplicate content, and structural problems .
Beyond crawling, Lumar provides real-time monitoring to track site health, including page speed, mobile usability, and security. Its AI-powered tools facilitate quick issue resolution and help prevent recurring problems. The platform also supports accessibility compliance with WCAG 2.2 standards, offering automated testing and actionable insights .
Lumar’s features include customizable dashboards, automated SEO QA testing, and integrations with other platforms. These tools help unify cross-functional teams, streamline workflows, and ensure consistent website performance .
In summary, Lumar serves as a comprehensive “command center” for website intelligence, enabling businesses to optimize their online presence effectively .
At its core, Lumar offers an ultra-fast, serverless web crawler capable of processing up to 450 URLs per second. This enables comprehensive audits of websites with thousands or even millions of pages, identifying issues like broken links, redirect chains, duplicate content, and structural problems .
Beyond crawling, Lumar provides real-time monitoring to track site health, including page speed, mobile usability, and security. Its AI-powered tools facilitate quick issue resolution and help prevent recurring problems. The platform also supports accessibility compliance with WCAG 2.2 standards, offering automated testing and actionable insights .
Lumar’s features include customizable dashboards, automated SEO QA testing, and integrations with other platforms. These tools help unify cross-functional teams, streamline workflows, and ensure consistent website performance .
In summary, Lumar serves as a comprehensive “command center” for website intelligence, enabling businesses to optimize their online presence effectively .
Centralized, Actionable Insights for Website Optimization
Finding issues on your website is important, but it’s not enough to drive meaningful results. The real value comes from taking action to fix those problems and prevent them from recurring. Lumar offers the deep insights you need, quickly and efficiently, to address website issues and optimize performance at scale.
Lumar’s platform provides powerful analytics that allow you to identify critical issues across large and complex websites. Whether you’re dealing with broken links, slow page speeds, or crawl errors, Lumar’s AI-powered tools help you prioritize and fix these problems swiftly. With AI-generated ticket content, you can streamline your workflow and ensure that no issues are overlooked.
Customizable alerts and dashboards allow you to monitor your website’s health continuously, providing real-time insights into potential issues before they escalate. These customizable features give you complete control over what’s tracked and how you are alerted, making it easier for your team to stay on top of changes and take proactive steps. Whether you need detailed reports on site performance or high-level summaries for leadership, Lumar’s clear, concise reporting makes it easy to communicate progress.
Beyond fixing current issues, Lumar helps ensure long-term website health by providing tools to prevent recurring problems. With its in-depth analysis and actionable insights, the platform enables continuous optimization. This means not only fixing issues but also improving site speed, user experience, and overall SEO performance over time.
Lumar empowers teams to tackle website issues efficiently, streamline communication, and ensure that every action taken is backed by solid data. By leveraging Lumar’s insights and AI-driven solutions, businesses can create high-performing websites that deliver better user experiences, increase traffic, and ultimately drive more conversions.
Lumar’s platform provides powerful analytics that allow you to identify critical issues across large and complex websites. Whether you’re dealing with broken links, slow page speeds, or crawl errors, Lumar’s AI-powered tools help you prioritize and fix these problems swiftly. With AI-generated ticket content, you can streamline your workflow and ensure that no issues are overlooked.
Customizable alerts and dashboards allow you to monitor your website’s health continuously, providing real-time insights into potential issues before they escalate. These customizable features give you complete control over what’s tracked and how you are alerted, making it easier for your team to stay on top of changes and take proactive steps. Whether you need detailed reports on site performance or high-level summaries for leadership, Lumar’s clear, concise reporting makes it easy to communicate progress.
Beyond fixing current issues, Lumar helps ensure long-term website health by providing tools to prevent recurring problems. With its in-depth analysis and actionable insights, the platform enables continuous optimization. This means not only fixing issues but also improving site speed, user experience, and overall SEO performance over time.
Lumar empowers teams to tackle website issues efficiently, streamline communication, and ensure that every action taken is backed by solid data. By leveraging Lumar’s insights and AI-driven solutions, businesses can create high-performing websites that deliver better user experiences, increase traffic, and ultimately drive more conversions.
Identify and fix website speed issues to enhance performance and reduce operational costs.
Lumar offers more than just a list of site speed issues—it provides the actionable insights you need to understand and resolve them effectively. Instead of overwhelming you with data, it highlights the most critical problems through clear, aggregated dashboards, helping you prioritize what truly matters for performance and user experience.
With Lumar, you can identify the biggest opportunities to improve site speed and drive better engagement. Its AI-powered workflows simplify the resolution process, allowing your team to fix issues faster and more efficiently. This not only improves website performance but also reduces the time spent on manual troubleshooting.
Beyond fixing current problems, Lumar supports long-term optimization. It helps prevent issues from recurring by continuously monitoring site health and offering proactive guidance. As a result, your site stays fast, reliable, and aligned with both user expectations and business goals.
Whether you’re managing a small team or an enterprise-scale website, Lumar equips you with the tools to enhance performance, boost SEO, and deliver a better digital experience.
With Lumar, you can identify the biggest opportunities to improve site speed and drive better engagement. Its AI-powered workflows simplify the resolution process, allowing your team to fix issues faster and more efficiently. This not only improves website performance but also reduces the time spent on manual troubleshooting.
Beyond fixing current problems, Lumar supports long-term optimization. It helps prevent issues from recurring by continuously monitoring site health and offering proactive guidance. As a result, your site stays fast, reliable, and aligned with both user expectations and business goals.
Whether you’re managing a small team or an enterprise-scale website, Lumar equips you with the tools to enhance performance, boost SEO, and deliver a better digital experience.
Simplify Website Optimization with Scalable Insights, Smarter Prioritization, and Expert Support
Optimizing your website is critical for business growth, but today’s digital landscape presents increasing complexity. Websites are larger, development processes more fragmented, and technical debt can pile up quickly. As new issues are introduced—often without your awareness—prioritizing what to fix becomes a major challenge. Inherited problems and ever-changing demands only make it harder to keep your site performing at its best.
That’s why we’ve built a smarter approach to website optimization. Lumar empowers you to collect the right data at scale, analyze it efficiently, and take immediate, meaningful action—without the guesswork.
Analyze gives you the power to detect and fix issues fast. It helps you identify problems, prioritize the ones that matter most, and take action at scale—so your team can stay focused on driving results.
With Monitor, you’ll reduce the risk of lost traffic, revenue drops, or compliance failures. Real-time insights alert you to critical changes before they become costly.
Protect helps you avoid wasting time and resources on problems that shouldn’t have existed in the first place. By preventing recurring issues, you save money and maintain long-term site health.
Impact is your tool for communicating the value of optimization. It helps you align internal teams, demonstrate ROI, and get stakeholder buy-in more effectively—turning technical improvements into business wins.
And when your internal team needs extra capacity, our professional services experts are here to support you. They extend your team’s capabilities, offering hands-on help with everything from implementation to long-term strategy.
With Lumar, you don’t just optimize your website—you build a sustainable, high-performing digital foundation that supports your business goals.
That’s why we’ve built a smarter approach to website optimization. Lumar empowers you to collect the right data at scale, analyze it efficiently, and take immediate, meaningful action—without the guesswork.
Analyze gives you the power to detect and fix issues fast. It helps you identify problems, prioritize the ones that matter most, and take action at scale—so your team can stay focused on driving results.
With Monitor, you’ll reduce the risk of lost traffic, revenue drops, or compliance failures. Real-time insights alert you to critical changes before they become costly.
Protect helps you avoid wasting time and resources on problems that shouldn’t have existed in the first place. By preventing recurring issues, you save money and maintain long-term site health.
Impact is your tool for communicating the value of optimization. It helps you align internal teams, demonstrate ROI, and get stakeholder buy-in more effectively—turning technical improvements into business wins.
And when your internal team needs extra capacity, our professional services experts are here to support you. They extend your team’s capabilities, offering hands-on help with everything from implementation to long-term strategy.
With Lumar, you don’t just optimize your website—you build a sustainable, high-performing digital foundation that supports your business goals.
The Fastest Website Crawling Solution Available
Built for unmatched speed and scalability, Lumar’s industry-leading website crawler is designed to handle even the most complex websites with ease. Powered by a modern serverless architecture, it delivers ultra-fast performance—crawling up to 450 URLs per second in testing, depending on your site’s infrastructure. Whether you’re working with a small site or managing millions of URLs, Lumar scales to meet your needs without compromising speed or accuracy.
This crawler isn’t just fast—it’s intelligent. Lumar offers comprehensive insights across critical areas of website performance, including technical SEO, site speed, and accessibility. With hundreds of built-in reports, you get a detailed view of your website’s health, helping you identify broken links, crawl errors, duplicate content, poor performance indicators, and compliance gaps—all in one place.
Beyond standard reporting, Lumar also supports custom analytics, enabling teams to dig into the data that matters most to them. You can create tailored views, track specific issues, and measure performance against your own goals. This level of flexibility ensures that insights are always aligned with your business priorities.
Lumar’s crawler helps you go beyond identifying problems—it empowers you to take action. By surfacing the most impactful issues first, your team can prioritize work effectively, saving time and improving efficiency. And with AI-assisted processes and seamless integrations, fixing issues becomes faster and more manageable.
Whether you’re focused on boosting search engine rankings, improving user experience, driving more conversions, or ensuring accessibility compliance, Lumar equips you with the insights and tools to make it happen. The result is a faster, more reliable, and better-performing website that supports your growth goals.
In short, Lumar’s website crawler combines speed, scale, and intelligence—giving you everything you need to optimize your digital presence and stay ahead in a competitive online landscape.
This crawler isn’t just fast—it’s intelligent. Lumar offers comprehensive insights across critical areas of website performance, including technical SEO, site speed, and accessibility. With hundreds of built-in reports, you get a detailed view of your website’s health, helping you identify broken links, crawl errors, duplicate content, poor performance indicators, and compliance gaps—all in one place.
Beyond standard reporting, Lumar also supports custom analytics, enabling teams to dig into the data that matters most to them. You can create tailored views, track specific issues, and measure performance against your own goals. This level of flexibility ensures that insights are always aligned with your business priorities.
Lumar’s crawler helps you go beyond identifying problems—it empowers you to take action. By surfacing the most impactful issues first, your team can prioritize work effectively, saving time and improving efficiency. And with AI-assisted processes and seamless integrations, fixing issues becomes faster and more manageable.
Whether you’re focused on boosting search engine rankings, improving user experience, driving more conversions, or ensuring accessibility compliance, Lumar equips you with the insights and tools to make it happen. The result is a faster, more reliable, and better-performing website that supports your growth goals.
In short, Lumar’s website crawler combines speed, scale, and intelligence—giving you everything you need to optimize your digital presence and stay ahead in a competitive online landscape.
The Website Optimization Platform Built to Fuel Business Growth
It’s no secret—high-performing websites play a vital role in driving business growth. They improve user experience, boost organic visibility, and convert more visitors into customers. But for many marketing and digital leaders, turning that potential into measurable results is easier said than done.
That’s where Lumar comes in. It’s the website optimization platform built to give you full visibility into your website’s technical performance and show you exactly what to improve—and how. Think of it as your digital “lightbulb moment,” helping you uncover and fix issues that could be holding your site back.
With Lumar, you can continuously monitor and benchmark your website’s technical health, from SEO performance and site speed to accessibility and structural integrity. This ongoing insight empowers you to stay ahead of problems, reduce the risk of traffic drops, and protect your online presence from compliance or performance-related setbacks.
Lumar’s robust analytics allow you to dive deep into the data. You’ll gain a clear understanding of what’s working, what’s not, and where untapped growth opportunities exist. Whether you’re trying to improve search engine rankings, optimize for Core Web Vitals, or ensure your site is accessible to all users, Lumar provides the information and tools you need to act quickly and strategically.
And it doesn’t stop at insights. Lumar helps you prioritize and fix the most impactful issues, fast. With AI-generated tickets, customizable alerts, and clear reporting, your teams can work smarter and communicate more effectively with stakeholders.
Ultimately, Lumar helps you turn your website into a true growth engine—backed by data, optimized for performance, and aligned with your business goals. It’s more than just a technical SEO tool—it’s a platform for unlocking long-term success in a competitive digital world.
That’s where Lumar comes in. It’s the website optimization platform built to give you full visibility into your website’s technical performance and show you exactly what to improve—and how. Think of it as your digital “lightbulb moment,” helping you uncover and fix issues that could be holding your site back.
With Lumar, you can continuously monitor and benchmark your website’s technical health, from SEO performance and site speed to accessibility and structural integrity. This ongoing insight empowers you to stay ahead of problems, reduce the risk of traffic drops, and protect your online presence from compliance or performance-related setbacks.
Lumar’s robust analytics allow you to dive deep into the data. You’ll gain a clear understanding of what’s working, what’s not, and where untapped growth opportunities exist. Whether you’re trying to improve search engine rankings, optimize for Core Web Vitals, or ensure your site is accessible to all users, Lumar provides the information and tools you need to act quickly and strategically.
And it doesn’t stop at insights. Lumar helps you prioritize and fix the most impactful issues, fast. With AI-generated tickets, customizable alerts, and clear reporting, your teams can work smarter and communicate more effectively with stakeholders.
Ultimately, Lumar helps you turn your website into a true growth engine—backed by data, optimized for performance, and aligned with your business goals. It’s more than just a technical SEO tool—it’s a platform for unlocking long-term success in a competitive digital world.
Identify and fix website speed issues to enhance performance and reduce operational costs.
The GTmetrix Grade is a composite score that reflects your website’s overall performance, combining insights from both the Performance and Structure scores. This grading system replaces the older PageSpeed and YSlow scores used in legacy GTmetrix reports.
Here’s how it’s calculated:
- Performance Score – Accounts for 70% of the total grade
- Structure Score – Makes up the remaining 30%
This weighted average offers a more balanced view of how your site performs (speed and responsiveness) and how well it is built (structure and best practices).
GTmetrix introduced this scoring model in November 2020, and it continues to evolve as web standards and performance metrics improve. While the current formula uses a 70/30 split, GTmetrix may update this weighting over time to better reflect real-world user experience and technical benchmarks.