Guides, tutorials, and documentation for 17+ productivity tools
Generate barcodes in Code 128, EAN-13, UPC-A, Code 39, and more formats. Download as PNG or SVG. Free online barcode maker for products, inventory, an...
Check real-time status of major blockchains including Bitcoin, Ethereum, Solana, and Polygon. Monitor block height, gas fees, and network health. Free...
Look up DNS records for any domain. Query A, AAAA, MX, CNAME, TXT, NS, and SOA records with our free online DNS lookup tool....
Validate email addresses for correct syntax, domain existence, and deliverability. Clean your email list to reduce bounces and protect sender reputati...
Generate favicons in ICO, PNG, and SVG formats for all browsers and devices. Upload any image and download a complete favicon package with sizes from ...
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly. Hash text strings or files for integrity verification, password storage, and checksums....
Compress JPG, PNG, and WebP images online for free. Reduce file size by up to 90% without visible quality loss. Batch compress multiple images. No upl...
Resize images online for free. Set exact dimensions, scale by percentage, or crop to common aspect ratios. Supports PNG, JPG, WebP, and GIF formats....
Quickly convert any image file to a Base64 data URI string. Drag and drop your image for instant conversion with copy-ready HTML and CSS code....
Look up any IP address to find its geolocation, ISP, organization, ASN, and network information. Identify your own public IP or investigate any addres...
Merge multiple PDF files into a single document. Drag and drop to reorder pages, select specific page ranges, and combine PDFs of any size without ins...
Test network connectivity and measure latency to any server or website. Get ping response times, packet loss statistics, and traceroute data to diagno...
Check if specific network ports are open or closed on any server. Test single ports or scan ranges to verify firewall rules, server configurations, an...
Generate free QR codes for URLs, WiFi, vCards, email, and more. Add custom colors, logos, and branding. Download as PNG or SVG. Bulk generation availa...
Professional Sitemap Generator...
Professional SSL Certificate Checker...
Look up domain registration details with our free WHOIS tool. Find registrar, creation date, expiry date, nameservers, and contact info for any domain...