01. Grammarly
Best for: Writing clean, readable SEO content for beginners to experts
Grammarly isn’t an SEO tool, but it is essential for content marketers or content writers. It helps avoid content grammar and writing tone mistakes that could harm user experience(UX) and readability signals — two crucial elements of SEO copywriting.
Key Features:
- Grammar, spelling, sentence and tone corrections
- Tone consistency tools
- Works across platforms: Google Docs, CMS like WordPress, Shopify, Wix, and Emails
Why is it great?
Improve on-page SEO content quality and user engagement metrics.
02. Keywords Everywhere
Best for: In-depth SEO keyword and trend research across platforms
This premium extension adds detailed search volume, trend graphs, and long-tail keyword suggestions on various search engines like Google, Baidu, Bing, Yandex and social media platforms like Facebook, X, Instagram, Pinterest and LinkedIn.
Key Features:
- Works with Google, YouTube, Amazon, Pinterest, and more
- Shows traffic metrics and ranking keywords for pages
- Exportable keyword research data
Why is it great?
High-powered multi-platform keyword research tool — excellent value for free.
03. MozBar
Best for: Domain, Page Authority and Spam Score(SS) checks,
MozBar is a staple for link building(Off Page SEO) and search engine result pages(SERPS) analysis. It displays DA/PA scores, Spam Score(SS) and page elements for any website you visit.
Key Features:
- Highlight dofollow and nofollow links
- Show On-page SEO elements summary
- Export data results to CSV
- Link metrics on Google SERP
Why it’s great?
Helps priorities link-building targets based on authority.
04. SEOQuake
Best for: SERP overlays and quick audits
Developed by the Semrush Company, SEOQuake provides the fastest way to analyze any website’s SEO health. It has multiple features for technical audits, keyword density, and SERP data exports.
Key Features:
- Complete SEO audit with one click
- Robots.txt, sitemap, and canonical detection
- Keyword density analysis
- Exportable Google SERP metrics
- Meta Title and Description
- Heading Tags, XML Sitemap and Google Analytics
Why it’s great?
SEO diagnostics, Internal and external linking on autopilot.
05. Browsec VPN
Best for: Private searching and accessing globally restricted content
Browsec is a free VPN (Virtual Private Network) that allows users to browse the web securely and anonymously. While not a direct SEO tool, it is very useful for SEO professionals and digital marketers who need to simulate searches from different regions or protect their browsing during research.
Key Features:
- Change IP location to various countries (e.g., USA, UK, Netherlands, France and Singapore are available for the free version), and others are in the premium version.
- Encrypts your browser traffic to protect privacy
- Bypasses worldwide/specific country-blocked websites and content
- Fast servers for free of cost, with additional locations and speed on the paid plan
How SEO Professionals Use Browsec?
- Simulate Google searches in different countries to analyse international search engine result pages(SERPS)
- Check how your competitors rank in various regions.
- Access tools and web-based content that may be geo-restricted
- Avoid personalized search results by using an anonymous IP
Why it’s great?
If you’re working on international and WordPress SEO, he helps you understand how search engines behave in other regions, without needing a proxy or costly VPN.
06. NoFollow
Best for: Identifying nofollow links for backlink audits and SEO analysis
The nofollow Chrome extension highlights all nofollow links on a webpage, making it an essential tool for technical SEO audits and link-building (Off Page SEO) analysis. It visually outlines which links are tagged with the rel=”nofollow” attribute, helping you understand a page’s link profile at a glance.
Key Features:
- Show dotted outlines of all nofollow links in red boxes
- Works on any webpage, including your internal links and competitor pages
- Helps identify external nofollow links during outreach and guest post review
- Helpful for auditing your own site’s link policies
How SEO Use It?
- Link building campaigns: Make sure backlinks are dofollow when suitable
- Internal linking audits: Spot unnecessary nofollow tags on internal links
- Content analysis: Review nofollow policies on sponsored or affiliate links
- Competitor research: Analyze the outbound link strategies of competitors
Why It’s Great?
It provides immediate visual feedback on backlink types without needing to inspect the HTML section — perfect for fast audits and manual reviews.
07. Copyleaks
Best for: Detecting plagiarism content, duplicate content, and AI-generated text, and showing the percentage of humanized content
He is a powerful Chrome extension designed to identify plagiarized content, AI-generated text, and duplicate material across the web. It’s especially useful for Digital Marketers, SEO professionals, content creators, educators, and website owners who need to ensure content is humanized or not and maintain high EEAT (Experience, Expertise, Authoritativeness, and Trustworthiness) standards.
Key Features:
- Detects free of cost plagiarism and content duplication in real-time
- Identifies AI-generated content with high accuracy (including Deepseek, Chatgpt, GPT-3, GPT-4, etc)
- Offers side-by-side comparison of the original and matched sources where the content has been copied
- Supports multi languages
- Can check the content directly within your browser area without opening a new tab
How SEOS and Content Teams Use It?
- Verify the originality of outsourced or freelance-written content
- Avoid duplicate content sanctions by checking webpages before publishing
- Audit existing pages for content copied from other sites
- Ensure the quality and trustworthiness of web copy for better search engine rankings
Why It’s Great?
Copyleaks helps protect your website’s SEO health by ensuring your content is 100% original, humanised and not flagged by Google for duplication or low quality.
08. Wappalyzer
Best for: Told about the website on which CMS has been used
Wappalyzer is a free Chrome extension that reveals the web design and development technologies used on any website — including CMS platforms, analytics tools, marketing software, Databases, ecommerce systems, JavaScript, web frameworks and libraries, and more. It’s a go-to tool for SEO, web, mobile app and software developers, marketers, and digital strategists looking to understand how websites are built and optimized.
Key Features:
Detects over 2.5K technologies, including:
- Content Management Systems(WordPress, Shopify, and Drupal)
- Analytics tools (Google Analytics, Hotjar to monitor user activity, which pages he has visited.
- Marketing tech (HubSpot, Mailchimp for email marketing)
- JavaScript libraries and frameworks (React, Vue, jQuery)
- SEO tools and tag managers (Google Tag Manager, Yoast SEO, Rankmath and All in One SEO)
- Provides technology version numbers (when available)
- Offers data on site categories, traffic rankings, and hosting providers
- Instant analysis with zero cost on one click in your browser
How SEOS Use Wappalyzer?
- Competitor analysis: See what tools and CMS top-ranking competitors are using
- Tech audits: Identify potential technical SEO issues related to CMS or frameworks
- Outreach strategy: Tailor outreach based on the tech stack (e.g., suggesting Shopify-specific apps)
- Sales enablement: Agencies use Wappalyzer to qualify prospects based on tech usage
Why It’s Great?
Wappalyzer saves time by offering a detailed tech snapshot of any website, without needing to view the source code or use developer tools.
09. GoFullPage
Best for: Capturing full-page screenshots of web pages
GoFullPage is a highly rated chrome extension that lets you take full-page screenshots of any website with a one click. It’s especially useful for SEO, designers, developers, and content creators who need to document pages for audit purposes, presentations, or their valuable client reports.
Key Features:
- Captures the whole web page, including areas outside the viewport
- Works on virtually any website, even those with infinite scroll or dynamic content
- Saves screenshots in the following PNG, JPEG, or PDF formats
- Allows editing before download
- No login or account registration required
- Check the previous downloads history
How do individuals, SEO, and Digital Marketing Agency Professionals Use It?
- Create graphical SEO audits for clients and company internal teams
- Take a Document screenshot before and after changes to site layouts or content
- Capture search engine result pages(SERP) results for ranking documentation
- Archive competitor landing pages or ad creatives for analysis
- Share full-page examples in training, reports, presentations, or tutorials
Why It’s great?
GoFullPage is a lightweight, fast, and reliable tool that simplifies documentation and makes professional reporting much easier — no need to manually scroll down and stitch screenshots.
10. Image Downloader
Best for: Bulk downloading images from web pages for analysis or reuse for your business or store
Image Downloader is a very simple, powerful Chrome extension that allows you to view and download all your selected images on a webpage. It’s especially helpful for SEOS, content marketers, web designers, and mobile app/Software developers who need to audit, reuse, or store image assets instantly.
Key Features:
- Detects and displays all images on the same page
- Allows bulky downloads or selection of individual images
- Shows image dimensions, file size, and alt text
- Filters all your selected images by width, height, and file type
- Straightforward interface with single-click download feature
How SEOS Use It?
- Audit images for missing or weak alt text
- Download your business competitor images for research purposes or benchmarking
- Check image formats and file sizes(not more than 100kb) to improve webpage speed and performance
Why is it great?
Image Downloader helps streamline comprehensive technical SEO audits and content workflows involving media, especially when you need to quickly gather visual assets.