Free Online SEO Tools — Meta Tags, Schema, Audit & More
16 free tools — fast, secure, and completely free.
Hashtag Generator
Generate relevant, competitive hashtags for Instagram, Twitter, LinkedIn, YouTube and TikTok — scored by reach, competition, and opportunity, with AI-suggested ideas rated through the same honest engine.
Try it nowSEO Content Score Analyzer
Paste your article or page content and get a deterministic SEO score out of 100 — readability, keyword usage, structure, and meta-tag checks with actionable fixes, just like Surfer SEO or SEMrush's on-page checker.
Try it nowMeta Tag Generator & Scorer
Get AI-suggested meta title and description ideas plus your own drafts — all scored honestly by a deterministic engine on length, keyword placement, power words, and CTA strength. A free alternative to SEMrush's SEO Writing Assistant.
Try it nowSchema Markup Generator
Create ready-to-paste JSON-LD schema markup for Articles, Products, FAQs, Local Businesses, How-To guides, and Breadcrumbs — validated locally against schema.org requirements for rich-result eligibility.
Try it nowBroken Link Checker
Crawl any page and check every link's live HTTP status concurrently — get a link health score plus a categorized list of broken (4xx/5xx), redirected, and unreachable links. Like Ahrefs' broken link checker, free and instant.
Try it nowInternal Linking Suggester
Paste your content and a list of pages on your site — get deterministically-scored internal-linking suggestions with the best anchor text and surrounding context for each, helping you build topical authority like the pros.
Try it nowKeyword Gap Analyzer
Compare your keyword list against competitors' and surface gap, shared, and unique keywords — each scored with a deterministic difficulty and estimated-volume model. A free alternative to SEMrush's Keyword Gap tool.
Try it nowRobots.txt & Sitemap Analyzer
Fetches and analyzes your robots.txt and sitemap.xml for SEO misconfigurations — global crawl blocks, missing sitemap declarations, malformed entries — with a crawlability score out of 100, just like a technical SEO audit tool.
Try it nowRedirect Chain Checker
Follows every redirect hop from a URL to its final destination, flagging redirect loops, long chains, and broken redirects — a free alternative to Ahrefs' redirect tracer, with an instant crawl-efficiency score.
Try it nowCanonical & Indexability Checker
Checks any page for canonical tags, noindex/meta robots issues, title and H1 structure, and Open Graph consistency in one pass — like SEMrush's on-page SEO checker, free and instant, with a clear indexability score.
Try it nowSERP Snippet Preview
Simulates exactly how your title and meta description will appear in Google search results, with pixel-accurate truncation estimates and a CTR-potential score — just like SEMrush's SERP Simulator, completely free.
Try it nowContent Brief Generator
Generates a complete content brief for any keyword — word count target, search intent, difficulty, AI-suggested "People Also Ask" questions, subtopics, and a ready-to-write outline. A free alternative to Surfer SEO and Frase content briefs.
Try it nowE-E-A-T Trust Signal Checker
Analyzes any page for the trust and authority signals Google's E-E-A-T guidance rewards — author attribution, authoritative citations, About/Contact transparency, HTTPS, content depth, and freshness — with a clear Trust Score, just like an advanced agency-level content audit.
Try it nowFeatured Snippet Optimizer
Tells you exactly which Featured Snippet format (paragraph, list, table, or steps) Google is likely to show for your target query, then scores your draft answer against it — a free alternative to SEMrush's Featured Snippet research, built to help you win position zero.
Try it nowHreflang Validator
Validates hreflang tags on any page — checking language code formats, self-referencing tags, duplicates, and x-default fallback — like Ahrefs' international SEO audit, free and instant, with a clear Hreflang Score.
Try it nowJS Rendering Checker
Compares your page's raw server HTML against what a JavaScript-blind crawler sees, flagging content that only appears after client-side rendering — an advanced technical SEO check agencies run with Screaming Frog, free and instant here.
Try it nowAbout SEO Tools
GMC Tools' SEO toolkit gives you the most-used on-page SEO utilities in one free, no-account platform. Generate perfectly formatted meta title and description tags, create JSON-LD schema markup without writing code, score your content for SEO quality, find broken links before they hurt your rankings, get internal linking suggestions for your blog, and more. Every tool in this category is designed for content creators, bloggers, and web developers who want to improve their search visibility without paying for an enterprise SEO platform. All tools are free, run instantly in your browser, and require no registration.
SEO Tools Guides & Tips
How Do Search Engines Actually Find and Rank Billions of Web Pages?
Typing a question into Google feels instant — but behind that single search box is one of the most complex systems ever built.
What Is Schema Markup and Why Do Search Engines Care About It?
Search engines are smart, but they still need help understanding what a page is really about. That's what schema markup provides.
How Do Meta Tags Influence What You See in Google Search Results?
That blue title and grey description under every Google result aren't random — they're carefully written meta tags.
What Is a Redirect and Why Do Some Links Take a Detour Before Loading?
Ever clicked a link and noticed the address bar briefly showed a different URL before loading? That's a redirect.
What Makes a Link 'Broken' and Why It Quietly Hurts Websites
A single broken link seems small — but across a website, broken links can damage trust and search rankings.
What Is a Canonical Tag and How Does It Prevent Search Engine Confusion?
Sometimes the same content can be reached through several web addresses. A small HTML tag tells search engines which one truly matters.
Frequently Asked Questions about SEO Tools
Is the Meta Tag Generator really free?
Yes — generate as many meta title and description tags as you need, for any number of pages, completely free.
What schema types does the Schema Markup Generator support?
The generator supports Article, FAQPage, Product, LocalBusiness, BreadcrumbList, and more — covering the most common structured data types.
How does the SEO Content Score tool work?
It analyses your content for key on-page SEO signals including keyword density, heading structure, meta tag completeness, and content length, then returns a score with specific recommendations.
Can these tools replace a paid SEO platform?
For individual pages and small sites, yes — these tools cover the most important on-page SEO tasks for free. For large-scale audits or keyword research, a dedicated SEO platform adds value.