Cloud Bandwidth Cost Estimator This tool estimates how much you will pay each month for outbound internet egress on the major cloud providers, using current published list prices for AWS, Google Cloud, Azure, Cloudflare, DigitalOcean, and Backblaze B2. Enter your expected monthly transfer in GB, TB, or PB, pick the provider you currently use, and ...
Try the Tool »IPv4 to IPv6 Converter Convert any IPv4 address into every standard IPv6 representation in one click. The tool generates the IPv4-mapped form used by dual-stack sockets, the 6to4 prefix that delegates a /48 to a public IPv4, the deprecated IPv4-compatible form kept for legacy lookups, and the reverse DNS PTR record under ip6.arpa. Each result ...
Try the Tool »Fake IP Address Generator Generate batches of valid fake IPv4 and IPv6 addresses, filtered by RFC range type — private (RFC 1918), public, loopback, multicast, CGNAT (RFC 6598), link-local, ULA (RFC 4193), and documentation. Useful for seeding test data, populating mock APIs, demoing dashboards, or producing example traffic logs without leaking real addresses. How to ...
Try the Tool »HAR File Formatter & Request Inspector Drop in an HTTP Archive (.har) file exported from your browser’s DevTools and instantly see every request as a sortable, filterable waterfall — with full DNS, connect, SSL, wait, and download timings, plus the raw headers, body, and a ready-to-paste cURL command for any single request. Everything runs locally ...
Try the Tool »WebRTC IP Leak Detector WebRTC is a built-in browser API that powers voice and video calls without plugins. To connect two peers directly, it uses the ICE framework to gather candidate IP addresses — and that list includes the machine’s local LAN IP plus any public address a STUN server can see. When users run ...
Try the Tool »SSH Config File Generator Build a clean, syntactically correct ~/.ssh/config without memorizing directive names or hunting down options in the ssh_config man page. Add each SSH host with a visual form, pick presets for common services like GitHub, AWS EC2, or bastion jump hosts, and copy or download the finished config in one click. How ...
Try the Tool »DNS Zone File Generator The DNS Zone File Generator creates properly formatted BIND-compatible zone files for your domains. Instead of manually writing zone files with strict RFC 1035 syntax, this tool provides a visual interface to configure SOA records, add DNS records of any type, and generate a complete zone file ready for deployment. How ...
Try the Tool »IPv4 Range Expander The IPv4 Range Expander takes a CIDR notation range (like 192.168.1.0/24) and expands it into a complete list of every individual IP address in that range. This is useful for network administrators, security professionals, and anyone who needs a full enumeration of IPs within a subnet for firewall rules, access control lists, ...
Try the Tool »Geo Distance Calculator Calculate the exact great-circle distance between two geographic coordinates using the Haversine or Vincenty formula. Enter locations as decimal degrees or DMS (degrees, minutes, seconds), get results in kilometers, miles, nautical miles, meters, and feet — plus initial bearing and an interactive map. How to Use Select your input mode (decimal degrees ...
Try the Tool »HTTP Request Header Builder Build HTTP request headers visually. Add common headers from a dropdown (Authorization, Content-Type, Accept, Cache-Control, etc.), configure authentication (Bearer token, Basic auth, API key), and add custom headers. The output is a ready-to-copy header block formatted for curl, fetch, or any HTTP client. How to Use Use the Add Common Header ...
Try the Tool »Bandwidth & Download Time Calculator Calculate download time from file size and connection speed, or find the required speed to download a file within a time target. Supports all common file size units and speed presets (3G, 4G, 5G, Wi-Fi, broadband), with configurable protocol overhead percentage. How to Use Enter your file size, select your ...
Try the Tool »IPv6 Subnet Calculator Calculate IPv6 subnet details from a CIDR notation address. Enter any IPv6 address with a prefix length (e.g. 2001:db8::1/48) and instantly see the network address, first and last usable host, subnet mask, total address count, address type classification, and full expanded/compressed forms. How to Use Enter an IPv6 address with its prefix ...
Try the Tool »Network Latency Calculator Paste raw ping output from Linux, macOS, or Windows and instantly get a full statistical breakdown of your network latency. The Network Latency Calculator computes mean, median, min, max, range, and standard deviation, plus jitter and packet loss percentage — giving you a complete picture of your connection quality. How to Use ...
Try the Tool »Data Transfer Time Calculator Instantly calculate how long it will take to transfer a file over any network connection. Enter your file size and bandwidth, adjust for protocol overhead and real-world network efficiency, and get the precise transfer time in days, hours, minutes, or seconds. How to Use Enter your file size (B, KB, MB, ...
Try the Tool »WHOIS Domain Lookup Look up domain registration details using the modern RDAP protocol. Enter any domain to see its registrar, registration and expiry dates, name servers, DNSSEC status, and domain status codes with human-readable explanations. How to Use Type a domain name (e.g., example.com) and click Lookup. The tool queries the RDAP registry to fetch ...
Try the Tool »SSL/TLS Certificate Decoder Decode and analyze SSL/TLS certificates instantly. Paste any PEM-encoded certificate to see its full details — subject, issuer, validity, extensions, and security warnings. How to Use Paste your PEM-encoded certificate (starting with —–BEGIN CERTIFICATE—–) into the input field. The tool instantly decodes and displays all certificate details including subject information, issuer chain, ...
Try the Tool »Robots.txt Tester Paste your robots.txt file and test whether specific URLs are allowed or blocked for any crawler. Validates syntax against RFC 9309, highlights errors, and extracts sitemap references. How to Use Paste your robots.txt content into the input field, enter a URL path to test, and select a User-agent. The tool instantly shows whether ...
Try the Tool »GraphQL Schema Formatter Format and validate your GraphQL Schema Definition Language (SDL) with consistent indentation, proper styling, and syntax highlighting. Paste your schema or upload a .graphql file to instantly clean up type definitions, queries, mutations, and directives. How to Use Paste your GraphQL SDL schema into the input area or upload a .graphql/.gql file. ...
Try the Tool »HTTP Header Analyzer Paste any HTTP request or response headers for instant analysis. Categorizes headers by type, explains each header’s purpose, validates CORS and caching configurations, flags deprecated headers, and provides performance optimization suggestions. How to Use Paste HTTP headers (key: value format, one per line) into the input field. The tool automatically parses, categorizes, ...
Try the Tool »Security Headers Checker Paste HTTP response headers to instantly analyze your site’s security posture. Checks all critical security headers, assigns an overall grade from A+ to F, and provides actionable fix recommendations with server configuration examples. How to Use Paste your HTTP response headers (key: value format, one per line) into the input field. The ...
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Update: Our latest tool was added on May 4, 2026
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