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Mobile-First Indexing: What It Means & Best Practices
Mobile-First Indexing

Table of Contents

When searching online, you might notice something. Websites look different on your phone compared to a computer. This change isn’t just for looks; it’s about making phone sites easier to use.

There’s a big reason behind this shift—Google’s mobile-first indexing.

Google uses the mobile version of content for ranking and indexing. This is mobile-first indexing. This move makes sense since most people now surf the web on their phones. This blog will guide you through mobile-first indexing. It will explain how to make your website shine in this new era.

We’ll cover best practices. They ensure your site thrives, not just survives, with Google’s focus on mobile.

Get ready—you’re about to make your site awesome for every phone user!

Understanding Google’s Mobile-First Indexing

Google’s Mobile-First Indexing is changing the game. It puts mobile pages in the spotlight for search results. Websites are finally catching up. They are making their mobile versions as good as the desktop ones.

What is Mobile-First Indexing?

Search engines, Google, use Mobile-First Indexing. They prioritize the mobile version of content over its desktop version to decide rankings. This approach means that Google’s crawlers use the mobile page first. They use it for information and indexing.

Since July 1, 2019, this has been the standard for all new websites published.

This shift recognizes that smartphones are now dominant. They are how people access the web today. More users are using mobile devices for browsing and searching. So, search engines should focus on improving these experiences.

Mobile-first indexing encourages websites to make sure their content is accessible. They should also optimize it for small screens. This is to maintain or boost their search engine rankings.

How Mobile-First Indexing Works

Google has shifted focus. It now works on indexing and ranking mobile websites. This big change means the search engine scans the mobile version first, evaluating and ranking it before considering desktop sites.

This way ensures that mobile users get high-quality content. It is tailored to their browsing habits. Websites with responsive design or a separate mobile site will likely see their mobile URLs in search results. This happens when the site is accessed from smartphones or tablets.

Content consistency across both versions is critical under this new setup. A website’s mobile version offers less content than its desktop. It could lose traffic since Google prioritizes what shows up on smaller screens.

This shows the importance of site owners. They must make text, images, videos, and data the same on all platforms. Google’s bots crawl web pages using a mobile user agent. They seek out these elements to understand and rank content well.

Making your site friendly for these bots can boost your search result visibility. You can do this by managing robot meta tags and adding accessibility features.

Mobile-first indexing timeline

Understanding mobile-first indexing sets the stage. It prepares for a deeper dive into its history. The timeline reveals the gradual steps taken by Google to prioritize mobile content. This journey has been crucial in shaping today’s web browsing experience. Let’s explore the key milestones:


  1. November 2016: Google announces the testing of mobile-first indexing. This was a turning point. It showed that Google recognized a shift to mobile browsing.
  2. July 2018: The rollout of mobile-first indexing begins. The initial phases were cautious. They affected a few sites. Google deemed these sites ready.
  3. In March 2018, a big update happened. Google is expanding mobile-first indexing to more sites. They follow best practices for mobile-first design.
  4. In December 2018, updates continued. They moved more websites to mobile-first indexing. This stressed the need for responsive web design and mobile usability.
  5. May 2019 was a turning point. Mobile-first indexing became the default for new websites. Google now assesses new websites mainly on their mobile version, not desktop.
  6. July 1, 2019, was an important date. After this date, sites first published or seen by Googlebot are put in the mobile-first index.
  7. In September 2020, an announcement confirmed that all websites will be switched. They will be switched to mobile-first indexing. The switch will happen by March 2021. This aims at making the internet more mobile-friendly and reflects changing user preferences.
  8. March 2021: The planned shift to mobile-first indexing gets delayed. This shows the challenges of implementation. It ensures a better transition for website owners.
  9. In July 2021, Google gave more updates. They show that they are working to ensure a smooth move for all sites to the new indexing system.
  10. October 31, 2023 (Important Fact): A milestone is reached. All websites are now mobile-first indexed except for a few that don’t work on any mobile device.

The Impact of Mobile-First Indexing on Websites

Google’s shift to mobile-first indexing changes the game for website rankings. Sites now need a strong mobile presence or catch up in search results.

Mobile Pages Prioritized for Indexing

Google has shifted its focus to mobile-first indexing. It mainly looks at the mobile version of a website when deciding how high to rank it. This change came because more people use their phones to browse the internet. They use them more than computers.

Websites need their mobile pages ready for Google’s crawls. They must be fast, accessible, and have the same content as the desktop version.

Web admins should ensure their mobile sites offer a great user experience. This is needed to stay on top in search rankings. This includes quick loading timesreadable texts without zooming, and easy-to-click links.

Making your mobile site friendly is more than just being nice to visitors. It directly affects your position in Google searches. Keeping up with these practices helps websites maintain or improve their visibility online.

The Shift to the Mobile-First Index

We now know that mobile pages are leading in indexing. It’s crucial to dive into the shift to a mobile-first index. This shift signifies a major change in how content is evaluated and ranked online.

Before, desktop sites were Google’s main source for indexing and ranking. With most users accessing information via smartphones, Google has flipped this approach.

Mobile versions of sites come first in line for evaluation and ranking.

This move by Google shows the importance of mobile-friendly design and accessible content across devices. Sites not set up for mobile use face challenges. They cannot maintain or improve their search rankings.

This shift means website owners and SEOs must adapt. They must ensure their mobile sites have as much content as desktops. They must also focus on core web vitals: speed, responsiveness, and visual stability. These are needed to meet users’ expectations on mobile.

Mobile-First Indexing as the Default for New Websites

Google set a new standard. Sites now appear on its search engine due to the shift to mobile-first indexing. If you launch a new site, it automatically lands in the mobile-first index.

This means Google evaluates your site based on its performance on mobile devices. It does this right from the start. Since July 1, 2019, every new site recognized by Googlebot follows this rule.

This change ensures that users get relevant content, which will be accessible on any device they use. For website owners and SEO experts, it’s crucial to understand that there’s no separate index for mobile and desktop.

All web pages are judged by their performance on mobile screens. It highlights the need to optimize sites for mobile users. This is to stay visible in Google searches.

Best Practices for Mobile-First Indexing

You must adopt many best practices to thrive in Google’s mobile-first landscape. These include streamlining content and improving mobile usability. They are your ticket to better rankings and happier users.

Keep reading for key strategies that will set you up for success.

Ensuring Content Consistency Across Mobile and Desktop Versions

Make sure the content on your mobile site matches the desktop version. Google indexes mobile content first, so if your website has different material on each platform, you could lose traffic.

You aim to have the same texts, images, and videos on both versions. This consistency helps users and improves SEO.

Keep structured data identical, too. Structured data is crucial for search engines to understand page content better. Whether someone visits from a phone or computer, they should find the same links and sections.

Next, focus on allowing Googlebot full access to render your site’s content effectively.

Allowing Google to Access and Render Your Content

Googlebot needs to access your site’s content freely. It needs to do this for successful mobile-first indexing. This involves making sure web crawlers can go through your pages. They should not hit roadblocks like paywalls or need user login.

Use the robots.txt file wisely. Don’t block key resources that affect how Google sees your page. Implementing structured data helps Google understand what your content represents, enhancing search results.

Next, check that the structured data on your site’s mobile and desktop versions is correct. This step ensures that information appears correctly in search results and gives a clear path for improving visibility in Google’s mobile-first index.

Verifying Structured Data

Having the right structured data on mobile is crucial. It plays a big role in mobile-first indexing. This means checking that the HTML code has the right tags and metadata. They help search engines understand your content.

Tools like Google’s Search Console can be incredibly useful here. They let you test and check your data. You make sure everything from product listings to articles appears as intended.

Fixing errors in structured data ensures that rich snippets appear right in search results. This boosts visibility and clicks rates. Always watch for warnings or errors in the Search Console dashboard. Address them quickly to keep top performance.

First, verify the structured data. Then, work on improving mobile page speed. It is another key factor for ranking well under Google’s mobile-first approach.

Improving Mobile Page Speed

Speeding up a mobile site is crucial. Use PageSpeed Insights to check your site’s speed. It gives suggestions for improvement. This includes enabling lazy loading for images. It delays loading pictures until they’re needed on-screen.

Such tweaks lower load times significantly.

Compression plays a big part, too. Minifying your CSS, HTML, and JavaScript files makes them smaller. Smaller files load faster. Also, consider converting images to formats like SVG. SVG offers high-quality graphics with small files.

Smaller files mean faster load times. Mobile users are eager to access content without delay.

Monitoring Mobile Errors

Keeping an eye on mobile errors is crucial for maintaining a good user experience. Continuous tracking helps identify and fix problems quickly. Here’s how to stay on top of mobile issues:


  1. Use Site Audit tools. Schedule weekly crawls to check for mobile issues. This proactive step ensures you’re always one step ahead.
  2. Check for crawlability issues. Make sure Googlebot can access your mobile site without problems. If it can’t crawl your pages, they won’t appear in search results.
  3. Check structured data. Errors in it can mess up how your content appears in search results. Regular checks help you catch and correct these errors.
  4. Optimize visual content. Make sure images and videos load fast and display well on mobiles. Slow-loading visuals turn users away.
  5. Monitor loading speed – Use Google PageSpeed Insights to see how fast your mobile pages load. Aim for the fastest speed possible to keep users happy.
  6. Watch for mobile usability issues. Google’s Mobile-Friendly Test tool shows problems. For example, it points out text that’s too small or clickable elements that are too close.
  7. Review Your Content Consistency. Always ensure the content is the same on your site’s desktop and mobile versions. This prevents confusion or missing info for mobile users.
  8. Keep an eye on redirects. Bad redirects make endless loops. These loops frustrate and can block access to content.

Mobile Usability vs Mobile-First Indexing

Mobile usability makes your site easy to use on a phone. Mobile-first indexing means Google uses the mobile version for ranking. Dive deeper to master both.

The Difference Between Mobile Usability and Mobile-First Indexing

Mobile-first indexing and usability tackle different parts of a website’s online presence. The former is about how Google sees your site. It chooses to crawl and index its mobile version. It does this as a primary resource for ranking.

This approach reflects the increasing use of smartphones for web searches. On the other hand, mobile usability focuses on how visitors use your site on their devices. It ensures easy navigation, fast loading, and readable content.

Improving both areas is vital but requires distinct actions. To be indexed, your site’s mobile version needs all the critical content from the desktop version.

This prevents traffic loss. Google considers this content when ranking your site. In contrast, usability involves making sure users have a great experience. This is done by making pages load fast. Also, by simplifying menus and buttons for small screens. And by making text easy to read without zooming or scrolling.

Use strategies like AMP to boost speed. They keep Googlebot happy by enabling efficient crawling and users happy with fast access to the information they seek.

The Importance of the Same Mobile and Desktop Experience

Google says websites must show the same content on mobile and desktop versions. This strategy ensures that users enjoy a seamless experience. It works no matter what device they use.

A site risks losing traffic if its mobile version has less content than its desktop version. Consistency means having the same meta robot tags, headings, and data on all platforms.

Users today expect quick and easy access to information. They switch between devices without wanting to miss out on any details. A consistent experience meets these user expectations and boosts SEO rankings.

Google’s mobile-first indexing prioritizes mobile-optimized sites in search results. This makes it crucial for web admins. They must ensure their site’s mobile and desktop versions match.

The Page Experience Update and Its Relation to Mobile-First Indexing

The Page Experience Update focuses on mobile pages. It emphasizes speed, stability, and interactivity. This update emphasizes the need for websites to perform well, keep users engaged, and be mobile-friendly.

These factors are crucial because they directly impact how high a website ranks in search results.

Mobile-First Indexing ties closely with this update. Websites must ensure their mobile versions prioritize user experience. They must be fast, stable, and easy to use. Making your site mobile-first is about more than just shrinking content. It’s about creating a place where users can easily find what they need on small screens.

This approach boosts rankings and improves web presence. More searches happen on mobile devices than ever before.

Tips for Improving Performance in Google’s Mobile-First Index

Improving your website’s performance in Google’s Mobile-First Index starts with a few smart moves. Focusing on mobile optimization and content consistency can set you up for success.

Providing the Same Primary Content on Mobile and Desktop

Showing the same main content on your website’s mobile and desktop versions is key for good SEO. Google advises this practice to maintain consistency across platforms.

Users expect a seamless experience, whether browsing on a phone or a computer. This approach helps avoid confusion. It ensures all visitors, on any device, can access the full range of information.

Sites must align their structured data, metarobot tags, and headings. This is key for success with mobile-first indexing. Consistency is crucial. It affects how well search engines can crawl, understand, and index content.

It directly impacts rankings and traffic from searches. Aligning mobile web pages with their desktop counterparts helps search engine bots. It makes pages more accessible and easier for visitors to find.

Using the Same Titles and Headings

Consistent titles and headings are key for SEO. Keep them the same on mobile and desktop. This ensures Googlebot understands your content’s structure well on mobiles. It does so as well as on desktops.

Clear, meaningful headlines help users and search engines grasp the main themes of your pages quickly.

Using the same titles and headings makes your site more crawlable. It also helps keep a consistent user experience. This is true no matter what device is used to access your website.

This practice supports content consistency, which is crucial for mobile-first indexing and helps websites rank better in search.

Optimizing Images and Videos for Mobile

Titles and headings are crucial. Optimizing images and videos for mobile is also key. It improves your site’s performance on Google. Make sure important content, like images, is on your website’s mobile and desktop versions.

This helps avoid traffic loss. Use formats like SVG for graphics to ensure they load quickly without losing quality. For videos, consider compression tools that reduce file size without sacrificing clarity.

Reducing image size can significantly speed up page loading times for users on the go. Remember to add alt attributes to all images. This will improve SEO and meet accessibility standards.

When embedding videos, choose responsive design options so they adapt smoothly to various screen sizes. These steps improve user experience. They also tell search engines that your site is well-optimized for mobile viewing. This boosts its rankings.

Challenges in Mobile-First Indexing

Switching to mobile-first indexing brings its own set of hurdles. Websites face the task of tweaking content and design. They must do this to ensure smooth performance on smartphones.

Identifying Main Mobile Crawling Issues

Spotting key mobile crawling issues is vital. They ensure your site shows up well in searches. Google prioritizes mobile versions of content, meaning that websites need to be up to par on mobile devices.


  1. Blocked Resources: Sometimes, web developers block certain resources from crawlers. If Googlebot can’t access crucial resources like CSS, JavaScript, or images, it won’t render your mobile site correctly. Ensure all essential elements are accessible.
  2. Unplayable Content: Mobile users detest finding unplayable content. Your site uses media formats not supported by mobile devices. Or it relies heavily on Flash. You’re in for trouble. Shift to using HTML5. Make sure all multimedia can play on mobiles.
  3. Faulty Redirects are a problem. Websites have separate URLs for desktop and mobile versions. They can misdirect Googlebot-mobile if they need to be set up correctly. Make sure that redirects send users and Googlebot to the right version of your site. Redirect mobile users to the mobile site and desktop users to the desktop site.
  4. Slow Loading Speed: A slow page is a no-go for mobile and Google users. Use tools like Google’s PageSpeed Insights. They analyze and improve load times for your pages.
  5. Mobile-Only 404s: Some sites show content fine on desktop but hit a 404 error on mobile. This discrepancy can mess with indexing big time. Check your mobile links to make sure they work. Do this by regularly checking in the Search Console.
  6. Intrusive Interstitials are pop-ups. They play well on desktops but ruin the mobile user experience. They cover critical content or are hard to close. This leads to higher bounce rates and lower rankings.
  7. Content that’s too big won’t fit on small screens. It forces users to pinch or zoom without a responsive design or dynamic serving. That’s not good for usability.
  8. Missing Structured Data is a big problem. Both versions of your site must have it. Your pages may not dish as well in search results. The mobile version lacks it.

Addressing Mobile Page Content Issues

First, you must find the main mobile crawling issues. Then, it would help if you focused on fixing content problems on mobile pages. This ensures that both users and search engines find your site valuable and easy to navigate.


  1. Make sure all important content is visible on mobile. Users and Googlebot should see the same key information. This includes text, images, and videos.
  2. Optimize your website for responsive design. A site should adjust to fit any screen. This makes it accessible and user-friendly.
  3. Verify that clickable elements are not too close together. This prevents accidental clicks and makes navigation easier for users on smaller screens.
  4. Use large, readable fonts to improve readability on mobile devices. Small text can be hard to read, which might push visitors away.
  5. Ensure fast loading times for mobile pages. Users expect quick access to information. Making images smaller and cutting code can help reduce wait times.
  6. Check that all internal links work correctly on mobile versions. Broken links can harm your site’s usability and SEO performance.
  7. Streamline navigation to make it simple and intuitive for mobile users. Complex menus can be frustrating on small screens, so consider a simplified layout.
  8. Regularly test your mobile site with tools like Google’s Mobile-Friendly Test. Use it to find issues from a user’s perspective.
  9. Include structured data in both desktop and mobile versions of your site. This helps Google understand your content better, boosting visibility in search results.
  10. Check for duplicate content on desktop and mobile sites. This avoids Google penalties for showing the same information under different URLs.

Technical checks, robots.txt, navigation

You must ensure your mobile site is ready for Google’s mobile-first indexing. This takes some work. You need to check technical aspects, make sure robots.txt files are set up correctly, and make navigation easy.

 Perform Technical Checks:

  • Make sure all links on the mobile site work as they should. Broken links can hurt your ranking.
  • Check that the mobile version of your site loads quickly. Slow sites turn users away.
  • Use the URL inspection tool in Google Search Console. Use it to see if Google can properly crawl and index your mobile pages
Review Your robots.txt Files:
  • Robots.txt files tell Googlebot which pages to crawl and which to ignore. To avoid indexing issues, ensure these files on your mobile site match those on your desktop.
  • Test your robots.txt file with Google’s robots.txt Tester tool. This ensures Googlebot can access your important content.
Simplify Navigation:
  • Design the mobile site with easy navigation in mind. Users should find what they need in a few taps.
  • Dropdown menus should be easy to use on a touch screen. You should not need to zoom or scroll sideways.
Check for Mobile Usability Issues:
  • Use Google’s Mobile-Friendly Test tool to spot any usability problems.
  • Ensure buttons are big enough to tap easily and text is readable without zooming.
Allow Full Access for Googlebot:
  • Avoid using robots meta tags. They would block Googlebot – mobile from specific content or pages on the mobile site.
  • Don’t block CSS, JavaScript, or images. Today’s smartphones can handle these elements. Blocking them could harm your rankings.
Optimize Content Layout:
  • Prioritize key information at the top of pages since users might not scroll down far.
  • Avoid pop-ups. They cover content and interrupt browsing. This frustrates users and can lead to penalties by Google.
Streamline Forms:
  • Keep forms short and simple. Too many fields may scare off users.

How does it affect desktop ranking?

Google now uses mobile-first indexing. Your website’s mobile version affects its search position, and this applies to desktop searches, too. This shift shows the importance of having a mobile-friendly site—not just for smartphone users but for everyone searching on Google.

If your site does well on mobile and offers a great user experience, it has a better chance of ranking high on desktop searches.

SEO specialists must, therefore, focus on optimizing websites to be mobile-friendly. This includes fast loading times, responsive design, and accessible content on both platforms.

A site that’s hard to navigate or slow on a phone can hurt its rankings across all devices. The key is giving all users—regardless of how they access your site—a top-notch experience.


Making websites mobile-first is more than just a trend. It’s now the core of SEO’s future. Embracing these changes means staying ahead in the digital game. Keep your sites responsive. Could you make sure they are crawlable? And always optimize for the mobile user experience.

Dive deep into best practices and watch as your site climbs. After all, mastering mobile-first indexing sets you up for success today. It’s key in today’s internet landscape.


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Expired domains for SEO are old domains that someone still needs to renew. People buy them because they can have good Google rankings and existing backlinks, which help with SEO.

You can find expired domains by using auction sites or specialized tools that search for these types of domains. Look for ones with high domain authority relevant to your SEO needs.

If the expired domain has strong authority and relevant backlinks, it can boost your site’s SEO. It does this by using its established credibility.

Some cons include potential Google penalties if the domain was used for spam or involved in a link farm. Always check the history before purchasing an expired domain.

After a Google core update, sites on chosen and maintained expired domains might keep their ranking. They can do so if they follow updated guidelines and avoid abuse.


Consider the expired domain’s authority, relevance to your business, and any existing backlinks. Also, ensure it hasn’t been penalized by Google in past updates or involved in spam activities.

AL Gomez
AL Gomez

He is an SEO strategist with 16 years of experience, including a pivotal role as an SEO Consultant. He also has significant expertise in Google Ads. Outside of SEO, he enjoys spending time with his children, cooking, and indulging in his love for coffee.

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