12 free tools
SEO tools built for real work
Technical and on-page SEO utilities for snippets, metadata, crawl directives and content analysis. Every tool is designed to expose its inputs and outputs clearly instead of hiding the logic behind a vague score.
⌕SERP Preview ToolPreview a title, URL and meta description in a Google-style search result layout.→⌕Meta Tag GeneratorGenerate modern SEO, canonical, robots, Open Graph and Twitter metadata.→⌕FAQ Schema GeneratorBuild valid FAQPage JSON-LD from questions and answers you can review on-page.→⌕Robots.txt GeneratorCreate a clear robots.txt file with allow, disallow and sitemap directives.→⌕Keyword Density CheckerAnalyze word, two-word and three-word phrase frequency directly in your browser.→⌕SEO Meta ExtractorInspect a public page for title, description, canonical, robots, headings, Open Graph and Twitter metadata.→⌕Search Console Regex GeneratorBuild RE2-compatible regex filters for Google Search Console queries and page URLs.→⌕Duplicate Content FinderCompare pasted page text to find exact repeated phrases and measure word-set similarity.→⌕Canonical Tag CheckerInspect pasted HTML for canonical link tags and compare the canonical URL with a page URL locally.→⌕Core Web Vitals Budget CheckerCompare measured LCP, INP and CLS values against editable performance budgets.→⌕Redirect Map CheckerAnalyze a pasted redirect map for duplicate sources, self-redirects, chains and loops without crawling the web.→⌕SEO HTTP Header CheckerInspect pasted raw HTTP response headers for SEO-relevant status, robots, redirect and content-type signals.→
Why ToolboxKart SEO tools?
Fast interfaces, plain-language explanations, mobile-friendly layouts and no unnecessary account wall for the utilities in this release.
Tool first
The working interface appears before long-form SEO content, so you can finish the task quickly.
Transparent logic
Calculators disclose formulas or assumptions where they matter, and analyzers avoid pretending subjective checks are scientific facts.
Reusable results
Copyable output and clean formatting are included where they improve the workflow.