# PromoPilot > Cascading link building platform with 75+ free SEO, network, and text tools. Three-tier backlink architecture (5→50→5000) for safe, natural Domain Rating growth. PromoPilot builds high-quality backlink profiles using a three-level cascade approach: - **Level 1**: 5 premium Web 2.0 backlinks (DR 50+) directly to your website - **Level 2**: 50 thematic articles (10 per L1 link) for amplification - **Level 3**: 5,000 crowd signals (100 per L2 article) for natural link velocity ## Free SEO Tools All 75+ tools are free, require no registration, and work instantly. ### SEO Analysis - [Site Audit](https://promopilot.link/tools/site-audit.php): Comprehensive 30+ point website SEO check - [Meta Analyzer](https://promopilot.link/tools/meta-analyzer.php): Title, description, Open Graph, and Twitter Cards analysis - [Meta Generator](https://promopilot.link/tools/meta-generator.php): Generate perfect meta tags for any page - [SERP Preview](https://promopilot.link/tools/serp-preview.php): Preview how your page appears in Google search results - [On-Page Checker](https://promopilot.link/tools/onpage-checker.php): Complete on-page SEO optimization analysis - [Schema Generator](https://promopilot.link/tools/schema-generator.php): JSON-LD structured data generator - [Image SEO](https://promopilot.link/tools/image-seo.php): Image optimization and alt text analysis - [OG Debugger](https://promopilot.link/tools/og-debugger.php): Open Graph and social media card debugger - [Page Speed](https://promopilot.link/tools/page-speed.php): Page load performance analysis - [Robots.txt Checker](https://promopilot.link/tools/robots-checker.php): Validate and analyze robots.txt - [Sitemap Analyzer](https://promopilot.link/tools/sitemap-analyzer.php): XML sitemap validation and analysis - [Index Checker](https://promopilot.link/tools/index-checker.php): Check page indexation status across search engines - [Competitor Compare](https://promopilot.link/tools/competitor-compare.php): Compare 22 on-page SEO metrics across websites - [Robots.txt Generator](https://promopilot.link/tools/robots-generator.php): Visual robots.txt builder with presets for WordPress, Laravel, Next.js - [Sitemap Generator](https://promopilot.link/tools/sitemap-generator.php): Crawl site and generate sitemap.xml automatically (up to 100 pages) - [Favicon Checker](https://promopilot.link/tools/favicon-checker.php): Check and preview website favicons (ICO, PNG, SVG, manifest) - [Keyword Research](https://promopilot.link/tools/keyword-research.php): Google Suggest keyword ideas with categorization (questions, comparisons) - [Website Screenshot](https://promopilot.link/tools/website-screenshot.php): Desktop/Mobile screenshots with performance metrics ### Link Analysis - [Link Analyzer](https://promopilot.link/tools/link-analyzer.php): Internal/external link profile analysis with anchor breakdown - [Broken Links](https://promopilot.link/tools/broken-links.php): Find broken links on any webpage (up to 50 links) - [Domain Trust](https://promopilot.link/tools/domain-trust.php): 15-point domain security and trust assessment - [Redirect Checker](https://promopilot.link/tools/redirect-checker.php): Follow and analyze HTTP redirect chains - [Backlink Checker](https://promopilot.link/tools/backlink-checker.php): Crawl site and analyze link profile — internal/external links, anchors, broken links ### Text & Content - [Humanizer](https://promopilot.link/tools/humanizer.php): AI text humanization with 11-stage processing and 9 style profiles - [Paraphraser](https://promopilot.link/tools/paraphraser.php): Syntactic text rephrasing - [Content Spinner](https://promopilot.link/tools/content-spinner.php): Generate up to 10 unique text variants - [AI Detector](https://promopilot.link/tools/ai-detector-pro.php): Detect AI-generated text using 13 metrics - [Plagiarism Checker](https://promopilot.link/tools/plagiarism-checker.php): Check text originality - [Grammar Checker](https://promopilot.link/tools/grammar-checker.php): Grammar and spelling analysis - [Keyword Density](https://promopilot.link/tools/keyword-density.php): Keyword frequency analysis (1-, 2-, 3-gram) - [Readability](https://promopilot.link/tools/readability.php): Readability score analysis (6 indices) - [Word Counter](https://promopilot.link/tools/word-counter.php): Word, character, sentence, and paragraph counter - [Tone Analyzer](https://promopilot.link/tools/tone-analyzer.php): Text tone and formality analysis - [Coherence](https://promopilot.link/tools/coherence.php): Text coherence and lexical cohesion analyzer - [Watermark Detector](https://promopilot.link/tools/watermark-detector.php): Detect hidden AI watermarks in text ### Network & DNS - [DNS Lookup](https://promopilot.link/tools/dns-lookup.php): Complete DNS record lookup (A, AAAA, MX, NS, TXT, CNAME) - [WHOIS Lookup](https://promopilot.link/tools/whois-lookup.php): Domain registration and ownership information - [SSL Checker](https://promopilot.link/tools/ssl-checker.php): SSL/TLS certificate validation and analysis - [Headers Checker](https://promopilot.link/tools/headers-checker.php): HTTP response headers analysis - [Security Headers](https://promopilot.link/tools/security-headers.php): Security headers audit (CSP, HSTS, X-Frame-Options) - [My IP](https://promopilot.link/tools/my-ip.php): Your public IP address and connection details - [IP Geolocation](https://promopilot.link/tools/ip-geolocation.php): IP address geographical location lookup - [Reverse DNS](https://promopilot.link/tools/reverse-dns.php): Reverse DNS (PTR) record lookup - [MX Lookup](https://promopilot.link/tools/mx-lookup.php): Mail server (MX) record lookup - [SPF Checker](https://promopilot.link/tools/spf-checker.php): SPF record validation - [DMARC Checker](https://promopilot.link/tools/dmarc-checker.php): DMARC policy analysis - [Hosting Checker](https://promopilot.link/tools/hosting-checker.php): Detect hosting provider - [Domain Age](https://promopilot.link/tools/domain-age.php): Domain registration age lookup - [CMS Detector](https://promopilot.link/tools/cms-detector.php): Content management system detection - [Tech Stack](https://promopilot.link/tools/tech-stack.php): Website technology stack detection - [Website Status](https://promopilot.link/tools/website-status.php): Website uptime and availability check - [HTTP/2 Checker](https://promopilot.link/tools/http2-checker.php): HTTP/2 protocol support check - [Server Info](https://promopilot.link/tools/server-info.php): Server software and configuration details - [Response Time](https://promopilot.link/tools/response-time.php): Server response time measurement - [Port Checker](https://promopilot.link/tools/port-checker.php): Open port scanner - [Domain IP](https://promopilot.link/tools/domain-ip.php): Domain to IP address resolution - [IP Blacklist](https://promopilot.link/tools/ip-blacklist.php): Check IP against DNSBL blacklists - [Reverse IP](https://promopilot.link/tools/reverse-ip.php): Find domains hosted on the same IP - [ASN Lookup](https://promopilot.link/tools/asn-lookup.php): Autonomous System Number lookup - [HTTP Status Checker](https://promopilot.link/tools/http-status-checker.php): Check HTTP status codes for URLs - [Cookie Checker](https://promopilot.link/tools/cookie-checker.php): Website cookie analysis - [Compression Checker](https://promopilot.link/tools/compression-checker.php): Check gzip/brotli compression ### Utilities - [URL Encoder](https://promopilot.link/tools/url-encoder.php): URL encode/decode tool - [Hash Generator](https://promopilot.link/tools/hash-generator.php): MD5, SHA-256, SHA-512 hash generator - [Password Generator](https://promopilot.link/tools/password-generator.php): Secure random password generator - [User Agent Parser](https://promopilot.link/tools/user-agent-parser.php): Parse and analyze User-Agent strings - [Base64 Tool](https://promopilot.link/tools/base64-tool.php): Base64 encode/decode - [JSON Formatter](https://promopilot.link/tools/json-formatter.php): JSON format, validate, and prettify - [IP Converter](https://promopilot.link/tools/ip-converter.php): IP address format conversion - [CIDR Calculator](https://promopilot.link/tools/cidr-calculator.php): CIDR notation subnet calculator - [.htaccess Generator](https://promopilot.link/tools/htaccess-generator.php): Apache .htaccess rule generator - [Color Converter](https://promopilot.link/tools/color-converter.php): Color format converter (HEX, RGB, HSL) - [QR Code Generator](https://promopilot.link/tools/qr-generator.php): Generate QR codes for URL, text, email, Wi-Fi, phone (PNG/SVG) - [Image Compressor](https://promopilot.link/tools/image-compressor.php): Compress JPEG, PNG, WebP in browser — files never leave your computer - [Fingerprint](https://promopilot.link/tools/fingerprint.php): Browser fingerprint analysis - [Subnet Calculator](https://promopilot.link/tools/subnet-calculator.php): IPv4/IPv6 subnet calculator ## Pages - [Home](https://promopilot.link/): Main page — cascading link building service overview - [Pricing](https://promopilot.link/public/pricing.php): Service pricing and tariff plans - [Networks](https://promopilot.link/public/networks.php): Supported Web 2.0 publishing platforms - [Case Studies](https://promopilot.link/public/cases.php): Real client results and success stories - [FAQ](https://promopilot.link/public/faq.php): Frequently asked questions - [About](https://promopilot.link/public/about.php): About PromoPilot and our mission - [Contact](https://promopilot.link/public/contact.php): Contact information - [Changelog](https://promopilot.link/public/changelog.php): Platform updates and version history ## Multilingual PromoPilot is available in 4 languages: - Russian (default): https://promopilot.link/ - English: https://promopilot.link/en/ - Ukrainian: https://promopilot.link/uk/ - Polish: https://promopilot.link/pl/ ## Optional - [Full documentation](https://promopilot.link/llms-full.txt)