The Ultimate Free SEO Tool
Stop paying for expensive subscriptions. DevFlow is a 100% free SEO tool suite providing high-performance search engine diagnostics. Analyze canonical elements, crawl structures, and meta tags instantly.
SEO CONSOLE SUITES
Choose a specialized tool module from the system index below to audit indexing, metadata configuration, link profiles, or simulated engine rankings.
Keyword Research Tool
Generate keyword suggestions with search volume, CPC, difficulty, and trends.
Keyword Density Checker
Analyze webpage content or raw text to measure keyword frequency, density, and readability.
Top Search Queries
Find high-traffic search queries and keywords by topic or competitor domain.
Meta Tags Extractor
Extract, analyze, and preview meta tags, Open Graph tags, and Twitter Cards from any URL.
Sitemap Finder
Locate and validate XML sitemaps and view robots.txt files for any website.
Index Checker
Perform bulk checks to see if URLs are indexed in Google and Bing search engines.
Crawlability Test
Test if search engine spiders can access, crawl, and render a webpage.
Link Analyzer
Scan a webpage to extract internal, external, and nofollow links, showing HTTP status codes.
Domain Authority Checker
Calculate authority scores, spam scores, and referring domains for multiple domains.
Page Authority Checker
Verify page-level authority scores, title tags, and meta tag status for URLs.
Backlink Checker
Discover external backlinks pointing to your domain, showing anchor text and link types.
Top Referrers Checker
Identify top referral traffic sources and domains backlinking to a site.
Competitor SEO Checker
Audit a competitor's website for keywords, backlinks, page speed, and index coverage.
Google SERP Checker
Analyze search rankings for keyword queries in simulated Google Search Results.
Bing SERP Checker
Analyze search rankings for keyword queries in simulated Bing Search Results.
Redirect Chain Tracer
Trace redirect paths (301/302) to verify final canonical URL statuses.
WHOIS & DNS Inspector
Retrieve domain WHOIS registrar info and check DNS server records (NS, MX, TXT, A).
CSS Selector Scraper
Parse a webpage's HTML structure and extract content using custom CSS selectors.
Automatic SEO Audit
Run a comprehensive automated SEO audit to get actionable improvement suggestions.
Schema Markup Generator
Generate structured JSON-LD schema markup for Google Rich Snippets.
XML Sitemap Builder
Crawl domains up to 30 pages to dynamically generate optimized sitemap files.
Robots.txt Builder & Tester
Create standard robots.txt files and validate crawler directives against URLs.
Keyword Gap Analyzer
Compare two domains side-by-side to identify missing keyword opportunities.
SYSTEM WORKFLOW
Verify website SEO performance through three precise steps.
Initialize Query
Provide target URLs, keyword strings, or domain values into the modular input console.
Server Crawl & Parse
DevFlow crawlers scrape page headers, canonicals, robots limits, and resolve active DNS latency.
Analyze Logs
Review diagnostic checklists, copy calculated parameters, or export reports directly as CSV files.
FREQUENTLY ASKED QUESTIONS
Technical documentation regarding the DevFlow core diagnostic logic.
> What is DevFlow SEO Tool?
DevFlow SEO Tool is an open, high-performance, developer-first search engine diagnostics suite. It contains 18 modular tools (including redirect chain tracers, DNS record inspectors, and HTML scrapers) to audit indexing parameters, meta tags, and referring link profiles instantly.
> How is DevFlow different from Semrush or Ahrefs?
Unlike commercial platforms, DevFlow has zero subscription gates, requires no account logins, and operates 100% in-memory without cookies or search history databases. In addition to the UI, it provides a standalone NPM Command Line Interface (CLI) to trigger diagnostic checks directly from local terminals or automated CI/CD pipelines.
> Does DevFlow store domain audit search histories?
No. All audits are executed in-memory. DevFlow does not maintain databases of queried URLs or scraped metadata. Optional session tracking is processed strictly inside the user's browser `localStorage` and never leaves their machine.
> How do I run the DevFlow CLI on my local system?
You can run diagnostics directly from your command line using `npx devflow-seo-tool analyze <domain-name>` or verify DNS records using `npx devflow-seo-tool dns <domain-name>`. The CLI includes automatic host sensing to fall back between local development servers and the live API workspace.