Which is the best free SEO tool?


Search Engine Optimization (SEO) can feel like navigating a labyrinth. From keyword research to technical audits, numerous tools promise SEO mastery. But with limited budgets, free options become incredibly attractive. Fear not, SEO warriors! An arsenal of powerful free SEO tools awaits.

Google Keyword Planner:

Google Keyword Planner stands out with its unique ability to seamlessly integrate into the Google Ads ecosystem, providing a comprehensive toolkit for both novice and seasoned marketers. Its unparalleled feature set includes not only keyword discovery and search volume insights but also competitive analysis and bid estimates, which are crucial for crafting effective pay-per-click (PPC) campaigns.

What makes Google Keyword Planner particularly exceptional is its capacity to offer real-time, data-driven insights derived from Google’s vast search data repository, ensuring that marketers are always equipped with the most current and relevant information. This integration allows for a more streamlined and efficient process of planning, executing, and optimizing advertising strategies, ultimately leading to better-targeted campaigns and higher ROI.

Free PPC Campaign Forecasting: While many free SEO tools focus on keyword research, Google Keyword Planner goes a step further. It allows you to create forecasts for potential pay-per-click (PPC) campaigns. You can estimate clicks, impressions, and cost based on your keyword choices and budget. This can be incredibly valuable for planning and strategizing paid advertising efforts alongside your SEO strategy.

Integration with Google Ads:
Since Google Keyword Planner is part of the Google Ads platform, it offers a seamless integration with ad creation. Keywords discovered through research can be easily added to new or existing Google Ads campaigns, saving you time and streamlining your workflow.

Answer the Public:

“Answer the Public” is a search listening tool that visualizes search queries and autocomplete data from search engines like Google. By entering a keyword or phrase, users can see a comprehensive array of questions, prepositions, comparisons, and related searches that people are typing into search engines. This tool is particularly valuable for understanding user intent, discovering content ideas, and optimizing for long-tail keywords.

Unique Features of Answer the Public

Visual Data Representation

One of the most distinctive aspects of “Answer the Public” is its visual representation of data. The tool generates “search clouds” that categorize search queries into questions (who, what, where, when, why, how), prepositions (for, can, is, near, with, without), comparisons (like, versus, vs, or, and), and alphabetical listings of related searches. This intuitive visualization helps users quickly grasp the breadth of search interest around a particular keyword.

User Intent Insights

“Answer the Public” excels in revealing user intent by showcasing the specific questions and phrases that users are searching for. This insight allows content creators to address the exact needs and curiosities of their audience, leading to more targeted and effective content. By understanding what questions are being asked, businesses can tailor their content to provide clear, valuable answers.

Comprehensive Data Coverage

The tool aggregates data from multiple languages and regions, making it a versatile resource for global and local SEO strategies. Whether you’re targeting a local market or an international audience, “Answer the Public” provides insights relevant to your specific focus.

Keyword Expansion

“Answer the Public” helps users expand their keyword list by presenting a wide range of related searches and queries. This feature is particularly useful for identifying long-tail keywords, which are often less competitive and more specific, leading to higher conversion rates. By incorporating these keywords into your content, you can improve your chances of ranking higher in search engine results pages (SERPs).

Content Ideation

Generating fresh and engaging content ideas can be challenging, but “Answer the Public” simplifies this process. By displaying a wide array of questions and topics related to your keyword, it inspires new content ideas that align with what your audience is actively searching for. This feature is invaluable for maintaining a consistent content schedule and ensuring that your content remains relevant and engaging.

Competitive Analysis

Understanding what your competitors might be overlooking can give you a significant edge. “Answer the Public” allows you to identify gaps in your competitors’ content strategies by revealing search queries they might not be addressing. By filling these gaps with high-quality content, you can attract a broader audience and improve your authority in your niche.


Historical Keyword Data Tracking: Unlike many free tools that only offer current search volume data, Ubersuggest’s free plan allows you to track historical keyword trends. This lets you see how search popularity for specific keywords has fluctuated over time. This valuable insight can help you identify rising trends and target keywords with increasing search volume, potentially putting you ahead of the curve.

Free Content Ideas Generation: Ubersuggest goes beyond just keywords. It analyzes top-ranking content for your target keywords and generates content ideas. This can be a goldmine for bloggers and content creators, sparking inspiration for new topics and angles to tackle within your niche.

Limited Competition in Free Plan: Compared to some free SEO tools that restrict features heavily, Ubersuggest offers a more generous free plan. You can access a decent amount of keyword suggestions, search volume data, and competitor analysis without needing to upgrade. This makes it a strong option for those starting their SEO journey.

Google Search Console:

Get a direct line to how your site performs in search results. Identify crawl errors, monitor mobile-friendliness, and submit sitemaps for optimal indexing.

Google Lighthouse:

Conduct a comprehensive SEO audit with Lighthouse, integrated within Chrome DevTools. It assesses page speed, performance, best practices, and offers actionable steps for improvement.

Screaming Frog SEO Spider:

Screaming Frog SEO Spider is a unique tool in the realm of SEO due to its robust capabilities and versatility. Unlike many other SEO tools that operate from the cloud, Screaming Frog is a desktop application, allowing for more extensive and customizable crawls. One of its standout features is the ability to render JavaScript, which is crucial for crawling and analyzing modern, dynamic websites that rely heavily on client-side scripts.

Additionally, Screaming Frog can integrate with Google Analytics, Google Search Console, and PageSpeed Insights, offering a comprehensive view of website performance from multiple angles. The tool also supports custom extraction using XPath and regex, enabling users to pull specific data from their websites, such as JSON-LD structured data or meta tags with particular attributes. Furthermore, Screaming Frog’s log file analyzer helps users understand how search engines are crawling their site, providing insights that are critical for resolving crawl budget issues and optimizing site structure.

Yoast SEO (WordPress Plugin):

Yoast SEO is one of the most widely used WordPress plugins for search engine optimization, known for its comprehensive feature set and user-friendly interface. A unique aspect of Yoast SEO is its real-time content analysis tool, which provides immediate feedback on both readability and SEO elements as you write or edit your posts. This includes suggestions for keyword density, meta descriptions, and even sentence structure, ensuring that content is both user-friendly and optimized for search engines.

Another standout feature is its integration with Schema.org, which helps improve your website’s rich snippet display in search results by automatically adding structured data. Additionally, Yoast SEO offers advanced XML sitemap functionality, allowing users to generate and customize sitemaps to enhance search engine crawling. The plugin also supports multiple focus keywords in its premium version, which helps users target several key phrases simultaneously. Lastly, Yoast SEO’s readability analysis uses Flesch Reading Ease scores to ensure content is accessible and engaging to a wide audience, which is crucial for user experience and SEO performance.

Ahrefs Backlink Checker:

Ahrefs Backlink Checker is a powerful free tool that goes beyond just showing you a list of websites linking to another. Here’s what makes it unique:

  • Unmatched Backlink Data: Ahrefs boasts the second-largest active web crawler after Google, giving them a massive database of backlinks. This translates to the most comprehensive backlink profile you’ll find anywhere for free, uncovering links many other checkers might miss.
  • Freshness is Key: Ahrefs updates its backlink data every 15 minutes, ensuring you’re looking at the most current information. This is crucial for understanding the ever-changing SEO landscape.
  • Go Granular: Ahrefs doesn’t just show you backlinks; it dissects them. You’ll see details like the specific page linking to your target, the anchor text used (the clickable text in the link), and whether the link is “dofollow” or “nofollow” (dofollow passes on SEO value, nofollow does not).
  • Powerful Filtering: Analyze backlinks by various criteria like link type, domain rating (DR – Ahrefs’ score for a website’s overall authority), URL rating (UR – Ahrefs’ score for a specific page’s authority), and more. This allows you to prioritize high-quality backlinks that can significantly impact your SEO efforts.
  • Free vs Paid Perspective: The free Ahrefs Backlink Checker offers a fantastic glimpse into a website’s backlink profile. Upgrading to a paid Ahrefs plan unlocks features like historical backlink data, competitor comparisons, and the ability to track your own backlinks over time, providing a much more comprehensive understanding of your SEO strategy.

While the free version is a great starting point, the paid plans truly unlock the power of Ahrefs’ backlink analysis, making it a favorite tool for serious SEO professionals.


Semrush offers a freemium model, including a limited free plan that gives you a taste of their powerful SEO toolkit. You can explore essential features like:

  • Keyword research: Uncover search volume, keyword difficulty, and relevant keywords to target for your website.
  • Competitor analysis: See what your competitors are ranking for, analyze their backlink profile, and identify opportunities to outrank them.
  • Website audits: Get a technical SEO health check of your website, identifying crawl errors, broken links, and areas for improvement.

Semrush’s data comes from its massive database of over 21 billion keywords and 836 million domains, giving you unparalleled insights into the competitive landscape. This vast dataset allows for highly accurate keyword research and competitor analysis, making it a favorite tool among SEO professionals.

While the free plan is a great starting point, it has limitations on the number of searches you can perform and projects you can manage. Upgrading to a paid plan unlocks higher limits, historical data, and additional features like social media tracking and content marketing tools.


MozBar is a free browser extension that does more than just display SEO metrics on the fly. Here’s what makes it unique and a valuable companion for any SEO enthusiast:

  • Effortless SERP Analysis: MozBar integrates seamlessly with Search Engine Results Pages (SERPs). You can instantly see Domain Authority (DA) and Page Authority (PA) scores for every listed website, helping you gauge their potential ranking power at a glance. No more jumping back and forth between tabs or tools.
  • Highlight Like a Pro: MozBar’s On-Page Highlighter goes beyond simply displaying SEO recommendations. It visually highlights keywords on the page you’re browsing, allowing you to see their placement and density within the content. Additionally, you can differentiate links by type (followed/nofollow, internal/external) for a deeper understanding of a website’s linking structure.
  • Custom Search Power: Conduct more relevant SEO research directly from your browser. MozBar lets you create custom searches by search engine, country, region, or city. This allows you to see how websites rank and what metrics matter in specific locations, crucial for localized SEO strategies.
  • Quick Page Overlays: Need a deeper dive into a specific page’s technical SEO health? MozBar’s Page Overlay provides a wealth of information with a single click. See exposed page elements, meta tags, internal/external links, and even HTTP status codes, helping you identify potential technical SEO issues that could be hindering performance.
  • Free vs Paid Advantage: While MozBar offers a robust set of features for free, upgrading to Moz Pro unlocks even more powerful tools. Gain access to Keyword Difficulty scores, comprehensive on-page optimization reports for specific keywords, and the ability to export your SERP analysis data for further investigation.

MozBar goes beyond just being an SEO toolbar; it’s a real-time companion that empowers you to make informed SEO decisions while you browse and analyze the web. The free version provides valuable insights, and the paid option unlocks a whole new level of SEO analysis within your workflow.

Remember: Free SEO tools are a fantastic starting point, but they may have limitations. As your SEO prowess grows, consider premium options for a more robust feature set. The key is to leverage these free resources strategically to build a strong SEO foundation and watch your website climb the search engine rankings!