10 Must-Have SEO Tools for Agencies to Improve Core Web Vitals

You’re an agency and you want to get your clients’ sites up-to-date with the latest core web vitals. You know how important it is, but don’t have the tools or resources available to tackle this complex task. Fortunately, there are a few must-have SEO tools that can help bring your website into compliance with Google’s new requirements.

Here’s an overview of 20 essential technical SEO tools for agencies looking to improve their Core Web Vitals scores and give users a better online experience. From crawlers that identify issues early on in development, to browser extensions that allow developers to test accuracy quickly; these powerful optimization solutions offer everything necessary for improving load times and other performance metrics required by modern websites today!

Web Vitals Metrics Overview

To enhance your understanding of Core Web Vitals and effectively optimize websites, it’s crucial to focus on vital metrics. These consist of Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). LCP measures loading performance by tracking when the main content is displayed on-screen for users.

FID assesses interactivity by calculating how quickly a website processes user input events like clicks or taps. Finally, CLS evaluates visual stability by quantifying unexpected layout shifts occurring during page rendering. By carefully monitoring these key indicators with SEO tools designed specifically for agencies, you can optimize user experience, and provide better-performing sites to clients, ultimately resulting in higher search engine rankings that drive more organic traffic to their online presence.

1. Google Analytics

Google Analytics is a vital tool for understanding user engagement and behavior on your clients’ websites. As an SEO agency, you can utilize this platform to gain valuable insights into traffic sources, demographics of visitors, and popular content that is attracting the most audience. Analyzing these factors helps in identifying trends or issues that require attention while crafting targeted strategies for improvement.

core web vitals

Google Analytics allows tracking of conversions via goal-setting features, which is essential when evaluating the success of specific campaigns or website improvements. Utilizing advanced segmentation tools within the platform enables agencies to dissect data more effectively and make informed decisions based on individual client needs. Overall, incorporating Google Analytics as part of your must-have SEO toolbox ensures effective optimization efforts tailored towards enhancing core web vitals across all aspects holistically.

2. Screaming Frog

As you continue to explore the benefits of Screaming Frog, bear in mind that this powerful tool goes beyond just basic website auditing. The feature-rich software allows agencies to efficiently analyze XML sitemaps and discover orphaned pages, ensuring full indexing coverage by search engines. Furthermore, visualizing your site’s internal linking structure becomes a breeze with its unique crawl path report, enabling you to uncover potential issues related to link depth or inefficient navigation on your client’s websites.

Screaming Frog unique crawl path report

Additionally, Screaming Frog offers seamless integration with Google Analytics and Search Console. This provides deeper insights into organic traffic and user behavior data correlation. This invaluable information can be used to inform strategic SEO decisions that are designed to improve core web vital scores across various sites managed by an agency.

3. Google Search Console

Incorporating Google Search Console into your agency’s SEO toolkit helps identify and monitor critical aspects of a website, such as crawl errors, structured data implementation, search appearance issues, or indexing status. The Performance report provides valuable insight into clicks, impressions, click-through rates (CTR), and average positioning for various search queries. GSC also allows you to submit sitemaps to improve indexation efficiency by informing the search engines about new pages on your site quickly.

This free tool offers the ability to compare Core Web Vitals scores over different time ranges. This helps users measure the progress they have made towards enhancing their website performance following content or infrastructure changes. It also allows for efficient communication with clients regarding success stories of ongoing campaigns based on tangible results showcased within Google Search Console reports sourced directly from Google itself.

4. Web Developer Toolbar

The Web Developer Toolbar is a powerful Google Chrome extension that is indispensable for analyzing and fine-tuning your clients’ websites. As an agency, you can use this versatile tool to uncover underlying issues with HTML, CSS, or JavaScript code, ultimately enhancing overall site health and performance. The toolbar allows you to disable various elements of a webpage, highlighting errors in real time while offering easy navigation through the source code.

Web Developer Toolbar

Furthermore, it helps assess the accessibility of content. It does this by checking color contrast ratios between text and background colors, which is an essential feature that complies with WCAG guidelines. This ensures optimal user experience across all devices and sizes, as well as mobile-responsive compatibility, ensuring seamless display on smartphones or tablets alike.

Overall, incorporating the Web Developer Toolbar into your technical SEO arsenal elevates website optimization efforts significantly, thus bolstering rankings within search engine results pages (SERPs).

5. WebPageTest

WebPageTest is an indispensable tool that enables agencies to delve into their website’s page speed, offering detailed performance metrics and improvement suggestions. This versatile testing platform supports multiple browsers, locations, and devices for a comprehensive analysis of your site’s usability across various scenarios. In addition to providing insights on load time breakdowns by content type or domain, it also displays visual progressions such as filmstrips and video captures showcasing how a webpage loads over time.


WebPageTest offers advanced features like custom scripting support that allows you to simulate user interactions during tests effectively. Armed with actionable information from this powerful diagnostic tool at your disposal not only ensures optimal UX but can also translate into improved search engine rankings, ultimately leading to increased organic traffic for clients’ websites.

6. Google PageSpeed Insights

Google PageSpeed Insights plays a crucial role in identifying and improving your website’s loading performance. This invaluable tool evaluates both the desktop and mobile versions of your site, offering separate scores for each platform out of 100. Equipped with detailed optimization recommendations such as image compression or eliminating render-blocking resources, you can quickly address identified problems to improve overall user experience.

In addition to providing real-world field data from Chrome User Experience Reports (CrUX) dataset, it also supplies metrics like First Contentful Paint (FCP), Cumulative Layout Shift (CLS), and Largest Contentful Paint (LCP). For agencies aiming to boost their clients’ search engine rankings while ensuring an optimal browsing experience, incorporating Google PageSpeed Insights into their SEO strategy is essential in achieving those objectives effectively.

7. Google Mobile-Friendly Testing Tool

The Google Mobile-Friendly Testing Tool is a crucial addition to any agency’s SEO toolkit, especially as mobile browsing continues to outpace desktop use. This valuable tool ensures that your client’s websites are accessible and conducive for efficient navigation on smaller screens. Analyzing essential factors such as readability and touch target sizes helps identify potential usability issues that may negatively impact user experience and search rankings.

Moreover, the tool highlights specific areas of improvement while providing actionable recommendations, allowing you to optimize websites effortlessly for both mobile traffic and search engine crawlers alike. Embracing this versatile testing solution contributes significantly to creating an engaging online presence across all devices, an indispensable aspect of modern digital marketing strategies.

8. Google’s Rich Results Testing Tool

Google’s Rich Results Testing Tool evaluates the accuracy and effectiveness of structured data markup, a crucial aspect in driving greater search engine visibility via rich snippets or enhanced search results. By presenting previews of your client’s potential appearance in Google’s SERPs (search engine result pages), this innovative solution ensures that your implementation meets current best practices while maximizing click-through rates.

The powerful testing capabilities encompass JSON-LD, RDFa, and microdata formats with detailed diagnostics regarding errors or warnings detected within the markup code.

Agencies can use these actionable insights to optimize the Schema structure of their websites according to the ever-evolving guidelines. They can also make use of rich-results-enhancing features like event listings, FAQ sections, and product review summaries that boost user engagement as well as overall SEO performance.

9. GTmetrix Page Speed Report

GTMetrix Page Speed Report offers an easy-to-comprehend breakdown of the factors affecting loading speed while suggesting actionable recommendations to enhance site efficiency. By measuring critical components like Time to First Byte (TTFB), load time, page size, and request count for both desktop and mobile devices, GTMetrix provides useful insights into areas that require improvement.

GTmetrix Page Speed Report

Moreover, it enables benchmarking against competitors’ websites or industry-specific standards with its vast array of configuration options, empowering agencies not only in identifying existing bottlenecks but also in preemptively addressing potential issues before they escalate. Harness the power of GTMetrix Page Speed Report to ensure optimal user experience on client websites while achieving higher search engine rankings through efficient technical optimization efforts.

10. W3C Validator

The W3C Validator is a valuable addition to your agency’s SEO toolbox, helping you maintain top-quality websites by ensuring the code behind them meets web standards. By executing comprehensive HTML and CSS checks, this tool detects coding errors that may impede optimal page performance or hinder accessibility for users with disabilities. Catching these issues early on helps avoid negative impacts on both user experience and search engine ranking factors like Core Web Vitals.

Ensure your clients’ sites are built upon a solid foundation of clean code by utilizing the W3C Validator as an integral part of your routine website audits and maintenance processes.

11. Ahrefs

Ahrefs is a powerful resource for SEO agencies seeking to optimize Core Web Vitals. This versatile tool offers valuable insights into backlinks, organic keywords, and competitor analysis.

Its comprehensive Site Audit feature can easily detect issues that affect the performance of your website. These include elements such as LCP, FID, CLS, and page speed. It is important to address these elements in order to ensure a good user experience and achieve high search engine rankings.

Ahrefs site audit

Moreover, Ahrefs’ dashboard provides detailed reporting on web vitals data which can be leveraged to optimize page speed and remove unused JavaScript code. This will enable one to make significant changes that can help improve website performance drastically.

12. Majestic

Majestic is a powerful SEO tool that agencies can use to gain deep insights into their clients’ backlink profiles. With its extensive data on link quality and quantity, Majestic helps reveal the website’s trustworthiness and relevance in search engine rankings. This comprehensive analysis allows you to identify potential threats from toxic links or spot opportunities for new web partnerships.

Furthermore, Majestic’s unique visualization features like “Clique Hunter” help uncover prominent competitors’ strategies by examining their linking patterns, giving you an advantage when crafting your own campaigns. By leveraging this essential tool alongside other top-performing SEO resources, your agency will be well-equipped to enhance Core Web Vitals effectively and increase overall online visibility for clients.

13. Moz Bar

Moz Bar serves as an efficient companion for SEO professionals by displaying valuable on-the-go insights. As a part of your agency’s essential toolkit, Moz Bar offers real-time data such as Domain Authority, Page Authority, and backlink profiles to help you quickly assess website strength in search results. Moreover, it aids in identifying potential issues with metadata or schema markup that could impact visibility.

With its user-friendly interface directly within the browser toolbar, this tool enables seamless analysis without disrupting workflow, making Moz Bar undeniably crucial for optimizing client websites and effectively boosting their Core Web Vitals scores.

14. Semrush

Semrush’s Site Audit Tool is indispensable for evaluating Core Web Vitals, which are crucial user experience metrics affecting search rankings. This comprehensive tool examines site performance on desktop and mobile devices, offering insights into loading time, interactivity speed, and visual stability.

Semrush offers detailed diagnostics and actionable recommendations to optimize aspects of website design or content strategy. With this help, you will be able to meet Google’s standards for optimal web experiences. Additionally, customer satisfaction rates will increase and there will be better organic traffic results toward the client’s website. These results make Semrush an essential addition to any agency toolbox focused on improving SEO outcomes.

15. Google Search Console XML Sitemap Report

The Google Search Console XML Sitemap Report is a vital component of your SEO arsenal. This indispensable feature enables you to submit and monitor sitemaps, ensuring that Google accurately crawls and indexes your website’s essential pages. The report provides valuable insights into indexing issues, helping you pinpoint broken links or orphaned content that may be hindering search engine performance.

Agencies can optimize their clients’ websites for organic growth by regularly analyzing the XML Sitemap Report. Furthermore, it also helps to improve Core Web Vitals scores. To achieve this, other tools such as Screaming Frog should be used in conjunction with the report.

16. BrightLocal

BrightLocal is an all-in-one local SEO tool that offers agencies invaluable insights into their clients’ online presence. With features such as citation tracking, review management, and Google My Business optimization, BrightLocal helps improve local search visibility for businesses. The comprehensive reporting system enables easy monitoring of progress while identifying areas that need enhancement in clients’ websites.

By leveraging BrightLocal’s extensive suite of functionalities, you can effectively streamline your agency’s workflow. These functionalities include rank tracking and competitor analysis. With these tools, you can deliver impressive results for local business clientele. This includes higher rankings on search engines like Google Maps or improving overall organic traffic performance.

17. Whitespark

Whitespark, a powerful local SEO tool, aids agencies in optimizing their clients’ websites for dominating local search results. With its Local Citation Finder feature, Whitespark efficiently identifies valuable citation opportunities and helps track the progress of citations over time. Additionally, it offers an exceptional Rank Tracker that monitors localized keyword rankings with precision.

Furthermore, the Reputation Builder facilitates review management by gathering customer feedback effortlessly while maintaining control over online reviews across various platforms. Overall, incorporating Whitespark into your array of SEO tools will significantly enhance your agency’s presence within targeted geographical regions and help drive more traffic to client websites through boosted rankings on Google Maps and other popular directories.

18. Botify

Botify, a powerful SEO tool designed for large-scale enterprise websites, addresses many technical factors that affect Core Web Vitals. The platform provides comprehensive crawling capabilities to identify on-site issues and opportunities across millions of pages. Its easy-to-navigate dashboard offers actionable insights into areas like indexability, site architecture optimization, and content quality improvements.

Moreover, Botify delivers a detailed report on website performance metrics such as First Contentful Paint (FCP) and Time To Interactive (TTI), enabling agencies to tackle speed-related challenges effectively. By incorporating this all-in-one solution into your agency’s toolkit, you’ll amplify your ability to enhance user experience and search engine ranking potential for clients’ sites successfully.

19. Barracuda Panguin

Barracuda Panguin is a vital tool for agencies aiming to decipher how Google algorithm updates impact website performance. Matching your analytics data with known update events assists in identifying potential penalties or ranking changes caused by these updates. With Barracuda Panguin’s clear visualizations and user-friendly interface, you can quickly assess the effects of past and present algorithm fluctuations on organic search traffic.

Equipped with this valuable information, SEO professionals can make strategic adjustments to enhance their clients’ websites in alignment with Google’s guidelines, optimizing site performance while keeping up-to-date with ever-evolving algorithms that shape online visibility.

20. Excel

Microsoft Excel is an indispensable tool in your SEO toolbox, allowing you to analyze and manage large data sets with ease. Whether it’s keyword research, backlink analysis, or tracking Core Web Vitals metrics across multiple client websites, organizing this information in a structured format using spreadsheets saves time and aids decision-making. With powerful functions like filters, pivot tables, and custom formulas at your disposal, optimizing websites becomes more efficient by identifying trends or uncovering opportunities quickly through data-driven insights that can positively impact search engine rankings for clients’ sites.

SEO Vendor can help agencies optimize their websites with effective SEO tools. If you want to maximize website performance and stay ahead of competitors, there are must-have SEO technical tools that every agency should use. These include Google PageSpeed Insights, Screaming Frog, and Sitebulb for crawling your site, a SERP simulator to test potential changes in organic rankings, and Varvy for quickly checking Core Web Vitals.

Additionally, make sure you monitor backlinks regularly, as it’s a big factor influencing rank placement on search engine result pages.

Sonu Yadav

by Sonu Yadav

Sonu Yadav is Editor-in-Chief at SEO Vendor. He has over eight years of experience in the field of digital marketing and has helped numerous businesses grow online. He is passionate about helping businesses succeed and enjoys seeing the results of his work.