Audit, Optimize &
Rank Higher Free
40 professional SEO tools that run entirely in your browser. Generate meta tags, validate schema markup, check redirects, preview SERP results — all free, all private.
All 40 SEO Tools
Click any tool to start using it instantly. Generate optimized code, validate markup, and audit your SEO in seconds.
Meta Tag Generator
Import metadata from a URL or edit SEO and social tags, preview them, and copy the generated HTML.
Meta Tag Analyzer
Inspect page metadata, social tags, response directives and actionable fixes from a URL.
Open Graph Tag Generator
Generate Open Graph meta tags with live Facebook and LinkedIn preview.
Open Graph Checker
Check any URL's Open Graph tags and preview how links appear on social media.
Twitter Card Generator
Generate Twitter Card meta tags with live preview for summary and large image cards.
Robots.txt Generator
Build a robots.txt file with a visual editor. Add rules for any user agent.
Robots.txt Tester
Paste your robots.txt and test if a URL is crawlable by any user agent.
Schema Markup Generator
Generate JSON-LD structured data for 15+ schema types with a visual form builder.
Schema Markup Validator
Validate JSON-LD structured data and check required fields per @type.
SERP Snippet Preview
See exactly how your page appears in Google search. Desktop + mobile views.
Keyword Density Checker
Analyze keyword frequency, density percentage and distribution in any text or URL.
Heading Tag Checker
Analyze the H1-H6 heading hierarchy of any URL. Detect missing or duplicate headings.
Hreflang Tag Generator
Generate hreflang link tags for multilingual and multi-regional websites.
Hreflang Checker
Validate language + region codes against ISO 639-1 / ISO 3166-1.
UTM Link Builder
Build UTM-tagged campaign URLs with presets for Google Ads, Facebook, email and more.
Title Tag Checker
Check a page title for length, truncation in Google, repeated words and separator clutter.
Meta Description Checker
Check a meta description for length, truncation and whether Google is likely to rewrite it.
H1 Tag Checker
Find a missing H1, several H1s, an empty one, or a heading level skipped in the outline.
Image Alt Text Checker
Find images with no alt attribute, and tell a missing one apart from a deliberate alt="".
Viewport Meta Tag Checker
Check the viewport tag, including the zoom-blocking that fails WCAG on mobile.
Noindex Checker
Find out if a page is blocked from Google — including by an X-Robots-Tag header that never shows in view-source.
Redirect Checker
Follow a URL through every hop — chain length, 302s used for permanent moves, loops, and the final destination.
HTML Lang Attribute Checker
Check the lang attribute on <html> — present, valid BCP 47, and consistent with xml:lang.
Internal Link Checker
Count internal against external links, and catch nofollowed internal links and unsafe new-tab links.
Anchor Text Checker
Find links with no text, generic anchors like "click here", or a raw URL used as link text.
Image Optimization Checker
Check images for missing dimensions, lazy-loading mistakes, legacy formats and missing srcset.
SEO Friendly URL Checker
Check a URL for capitals, underscores, depth, parameters and exposed file extensions.
Core Web Vitals Test
Test LCP, CLS and INP against Google’s thresholds, on mobile and desktop, with the metrics that explain them.
Largest Contentful Paint Test
Measure LCP against the 2.5-second threshold, with the TTFB that usually explains a slow one.
Cumulative Layout Shift Test
Measure CLS against the 0.1 threshold — how much the page jumps around while it loads.
INP Test
Check Interaction to Next Paint against the 200ms threshold, and why a lab test alone cannot give you one.
Search Engines Blocked Checker
See which of ten search crawlers your robots.txt lets in, with correct wildcard matching and the AdsBot exemption.
Website Crawlability Test
Nine checks along the path a crawler takes: response, redirects, robots.txt, robots tag and canonical.
HTTPS Redirect Checker
Check http:// upgrades to https:// in one permanent hop, and read the HSTS policy that closes the plaintext window.
AI Crawler Checker
See which AI crawlers your robots.txt allows. Separates training crawlers from the live-answer crawlers that quote you today.
llms.txt Generator
Build a valid llms.txt that tells AI assistants what your site is and which pages to read. Validated as you type.
llms.txt Validator
Check an llms.txt against the llmstxt.org format — structure, link syntax, and the mistakes that make it useless to a crawler.
Sitemap Validator
Validate XML sitemaps against the sitemaps.org spec. Catches duplicates.
XML Sitemap Generator
Generate a valid XML sitemap from a list of URLs. Set priority, changefreq and lastmod per URL.
Canonical Tag Checker
Check canonical tags on any URL. Detect self-referencing, missing or conflicting canonical URLs.
Why Free SEO Tools Matter for Every Website
Technical SEO is the foundation of search visibility. Without proper meta tags, structured data, and crawl directives, even great content can remain invisible to search engines. Google processes over 8.5 billion searches daily — and the top 3 results capture 75% of all clicks.
Structured data is increasingly critical. Pages with valid schema markup are 2.7x more likely to appear as rich results in Google. Our Schema Markup Generator creates valid JSON-LD for articles, products, FAQs, and local businesses, while the Schema Markup Validator checks your existing markup against Google's requirements.
Meta tag optimization remains one of the highest-ROI SEO activities. A well-crafted title tag and meta description can increase click-through rates by 20-30%. Our Meta Tag Generator creates pixel-perfect tags with character count validation, while the SERP Preview shows exactly how your page will appear in Google search results.
For technical auditing, proper robots.txt configuration controls which pages Google can crawl, and a valid XML sitemap ensures every important page gets discovered. These foundational elements are easy to get wrong — and the consequences are invisible until you check.
Built For Every SEO Task
On-Page SEO Optimization
Generate pixel-perfect meta tags, Open Graph tags and Twitter Cards for every page. Ensure your titles and descriptions display correctly across Google, Facebook and X.
Technical SEO Auditing
Validate your robots.txt rules, check XML sitemaps for errors, test schema markup, and trace redirect chains. Catch crawl issues before Google does.
Content SEO
Preview how your pages appear in Google search results, analyze keyword density for on-page optimization, and check content readability scores.
Local & Structured Data
Generate valid JSON-LD schema markup for articles, products, FAQs and local businesses. Preview how your rich results will appear in Google.
SlapMyWeb vs SmallSEOTools & Others
Why use 5 different websites when one does it all?
How Our SEO Tools Work
- 1
Pick a tool
Choose from 40 specialized SEO tools above — meta tags, schema markup, robots.txt, sitemap validation, and more.
- 2
Enter your URL or content
Paste a URL to analyze, enter your page details for tag generation, or drop your schema markup for validation. Each tool guides you step by step.
- 3
Get instant analysis
Results appear in real-time. See validation errors, preview how your page looks in Google, and get actionable recommendations to fix issues.
- 4
Copy optimized code
Copy generated HTML, JSON-LD, or configuration files with one click. Paste directly into your site's source code or CMS.
SEO tools are just the start
These tools fix one thing each. Our scanner checks SEO, performance, content and other signals available on your plan, then ranks issues by impact.
Run a free scanFrequently Asked Questions
Are these SEO tools free?+
How accurate is the schema markup validator?+
Can I generate meta tags for multiple pages?+
Do you check robots.txt for errors?+
Is data sent to your server?+
How do these compare to Yoast or RankMath?+
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