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20 Best SEO Tools

Comprehensive introduction to the best SEO tools, including all-in-one tools, single-function free tools, Google extensions, local tools, and AI SEO tools to improve SEO work efficiency

Kostja
February 15, 2025
Updated on February 15, 2025
25 min read

What are SEO Tools?

SEO tools, like other marketing channel tools, are used to improve efficiency during the marketing process by automating repetitive tasks, providing data-driven insights, and streamlining complex workflows. SEO tools can help you complete the following tasks: conducting comprehensive keyword research to identify search opportunities and understand search intent, tracking keyword rankings across multiple search engines to monitor performance trends, optimizing on-page elements like titles, meta descriptions, and content structure, building high-quality backlinks through outreach and relationship management, performing technical SEO audits to identify and fix issues, and analyzing competitor strategies to identify opportunities and benchmark performance.

There are many types of SEO tools on the market, mainly divided into two categories: single-point solution SEO tools that focus on solving a specific problem with specialized functionality, ideal for teams with specific needs or budget constraints, and comprehensive SEO tools that are feature-rich, containing multiple integrated tools that can handle various SEO tasks from a single platform, providing better workflow integration and data consistency.

SEO tools can also be classified by platform: local SEO tools that run on your computer, providing privacy and control but requiring installation and updates, SEO websites that offer cloud-based access from any device with internet connectivity, SEO extensions that integrate directly into browsers for quick access and on-the-fly analysis, and AI SEO Agents that leverage artificial intelligence to automate complex tasks and provide intelligent recommendations, representing the cutting edge of SEO technology.

All-in-One SEO Tools

1. Semrush

Semrush is a globally renowned digital marketing tool that provides integrated marketing and analytics services. Founded in 2008, it currently has over 10 million users, including major companies like Tesla and Procter & Gamble. Semrush's main features include keyword research, competitor analysis, website traffic monitoring, backlink analysis, SEO optimization, advertising research, and social media management. Additionally, it provides SEO content optimization tools to help users improve content quality and search engine performance. Semrush offers various paid plans to meet different user needs.

Semrush

2. Ahrefs

Ahrefs is a powerful SEO and digital marketing tool focused on helping users improve website search engine rankings and visibility. Its core features include backlink analysis, keyword research, website auditing, content exploration, and competitor analysis. Ahrefs provides comprehensive SEO data, such as traffic estimates, keyword rankings, and backlink quality, helping users optimize content and develop effective SEO strategies. Additionally, Ahrefs has launched an AI content assistant to improve content quality and search engine rankings. Its massive database and user-friendly interface make it a preferred tool for SEO professionals.

Ahrefs

3. Similarweb

SimilarWeb is a leading website traffic analysis tool focused on providing comprehensive website data and analytics services. It can help users understand website traffic sources, user behavior, competitor situations, and market trends.

Similarweb

4. Small SEO Tools

Small SEO Tools is a platform providing over 145 free online SEO tools aimed at helping users optimize website search engine performance. It covers multiple categories, including text analysis tools (such as plagiarism checker, article rewriter, spell checker, word counter, etc.), keyword tools (such as keyword research, density checker, competition analysis, etc.), backlink tools (such as external link checker, dead link detection, etc.), website management tools (such as website performance analysis, page speed testing, etc.), and image editing tools (such as image compression, size adjustment, etc.).

Additionally, Small SEO Tools also provides website tracking tools, proxy tools, domain tools, meta tag tools, password management tools, PDF tools, development tools, unit conversion tools, binary conversion tools, online calculators, etc. These tools require no download or installation, and users can use them simply by accessing the website through a browser.

Small SEO Tools

5. SEO Review Tools

SEO Review Tools is a platform providing various free online SEO tools aimed at helping users quickly analyze website SEO performance and monitor competitor dynamics. These tools cover multiple SEO dimensions such as technical, content, and authority, and can generate detailed SEO insights and improvement suggestions.

SEO Review Tools

Single-Function Free Tools

2. Content Tools

2.1. Duplicate Content Checker

2.2. AI-Generated Content Checker

3.3. Meta Information Checker

Meta Length Checker by mrs.digital

Results displayed in Google Search after entering Meta information in code, using my blog Alignify as an example, checking if it will be truncated.

Google Extensions

1. AITDK

AITDK is an SEO extension made by independent developer Blank. For beginners, it can meet basic needs. You can view TDK (Title, Description, Keywords), Traffic (Similarweb metrics), SERP (number of indexed pages), Heading (H tags), Links (internal links and Attributes), Structured (structured data), etc.

AITDK SEO extension

These are the items I check most frequently.

2. Detailed SEO Extension

A veteran SEO extension with similar features to AITDK.

Detailed SEO Extension

3. Wappalyzer – Technology Profiler

Wappalyzer

4. MozBar

MozBar

Local SEO Tools

1. Screaming Frog

Screaming Frog is an industry-leading website crawler tool developed by a UK SEO agency, widely used for technical SEO auditing. It can help users quickly crawl website pages, analyze website structure, content, and key elements, and identify common SEO issues such as broken links, duplicate pages, meta tag issues, etc.

Screaming Frog SEO Spider offers both free and paid versions. The free version can crawl up to 500 URLs, while the paid version (annual fee Β£199) has no limits and provides advanced features such as JavaScript rendering, custom data extraction, Google Analytics and Search Console integration, etc.

Screaming Frog

Xenu's Link Sleuth is a powerful free website dead link detection tool, widely used to detect invalid links, broken links, and redirect links on websites. It supports comprehensive detection of local webpage files and online URLs and can generate detailed reports.

AI SEO Tools

1. AirOps: LLM-Driven Content Generation Workflow

AirOps is a platform focused on leveraging AI technology to optimize content creation and SEO, aimed at helping businesses achieve scalable growth through precise content strategies and AI-driven workflows. It provides end-to-end solutions from content planning to distribution, supports multiple content types, and through expert guidance and team empowerment, helps businesses transform from AI users to AI builders, thereby improving content quality and business outcomes.

AirOps

Other Tools

1. Social Media Management

  • Buffer
  • Hootsuite

2. Social Media Monitoring

Conclusion

SEO tools play a crucial role in modern digital marketing. Whether comprehensive tools or single-point solutions, they can help users improve website search engine performance, optimize content quality, analyze competitor dynamics, and achieve higher traffic and conversion rates. Choosing the right SEO tools can significantly improve your marketing efficiency and effectiveness.

Frequently Asked Questions

    Best SEO Tools 2025: Free & Paid Options | Alignify