# Geekflare API > A suite of APIs for website performance testing, security scanning, DNS lookups, and various utility functions for developers. Geekflare API provides a comprehensive collection of APIs designed to help developers test, monitor, and optimize websites and applications. The platform offers tools for performance testing, security scanning, DNS lookups, and various utility functions that can be integrated into existing workflows and applications. **Key Features:** - **Performance Testing APIs** - Test website loading speed, Core Web Vitals, and overall performance metrics to identify bottlenecks and optimization opportunities. - **Security Scanning** - Scan websites for vulnerabilities, SSL certificate issues, and security misconfigurations to ensure your applications are protected. - **DNS Lookup Tools** - Perform comprehensive DNS queries including A, AAAA, MX, TXT, NS, and other record types for domain analysis and troubleshooting. - **Screenshot API** - Capture full-page screenshots of websites programmatically for monitoring, archiving, or visual testing purposes. - **Broken Link Checker** - Identify broken links on websites to maintain SEO health and improve user experience. - **Tech Stack Detection** - Discover the technologies, frameworks, and tools used by any website for competitive analysis or research. - **IP Geolocation** - Get detailed geographic information about IP addresses including country, city, and ISP data. - **PDF Generation** - Convert web pages to PDF documents programmatically for documentation or archiving needs. - **QR Code Generator** - Create QR codes dynamically through API calls for various use cases. To get started with Geekflare API, sign up for an account on their website to receive an API key. The API uses RESTful endpoints with JSON responses, making integration straightforward with any programming language. Documentation provides code examples and detailed parameter descriptions for each endpoint. The platform offers both free and paid tiers to accommodate different usage levels and requirements. ## Features - Website performance testing - Security vulnerability scanning - DNS lookup and analysis - Screenshot capture API - Broken link detection - Technology stack detection - IP geolocation - PDF generation from URLs - QR code generation - SSL certificate checking - Core Web Vitals testing - RESTful API with JSON responses ## Platforms WEB, API ## Pricing Freemium — Free tier available with paid upgrades ## Links - Website: https://geekflare.com/api/ - Documentation: https://geekflare.com/api/ - EveryDev.ai: https://www.everydev.ai/tools/geekflare-api