Network & Diagnostics
Detect WebRTC IP leaks, inspect client hardware, parse user-agents, test WebSockets, and check HTTP latency.
All Network & Diagnostics
Every tool runs 100% locally in your browser with zero server uploads.
WebRTC IP Leak & Local Network Detector
Detect private LAN IP addresses, public IPv4/IPv6 addresses, and STUN candidate leaks directly through browser WebRTC.
Browser & Device Hardware Capabilities Inspector
Inspect CPU core concurrency, GPU WebGL renderer vendor, device memory RAM, display color gamut, and battery status.
User-Agent & Client Hints Parser
Parse any browser User-Agent string into browser engine, operating system, device model, CPU architecture, and Client Hints.
Interactive WebSocket Client & Echo Tester
Connect to any WebSocket or WSS server, send JSON and text payloads, view live connection states, and inspect timestamped message logs.
HTTP Ping & Network Latency Benchmark
Measure real-time HTTP fetch latency, jitter, round-trip time (RTT), and packet response speed across global CDNs.
CORS Header & Preflight Simulator
Simulate CORS preflight requests, check Access-Control headers, analyze cross-origin security rules, and generate fix instructions.
TLS/SSL Certificate Expiry & Renewal Calculator
Calculate domain SSL certificate validity periods, expiration countdowns, renewal urgency, and security grace windows.
Network Port Lookup & Protocol Reference
Search over 300+ standard TCP/UDP networking ports, services, RFC specifications, and security vulnerability recommendations.
Bandwidth & File Download Time Calculator
Calculate precise transfer times for any file size across internet speeds from dial-up and 4G to gigabit fiber connections.
WHOIS & RDAP Domain Data Formatter
Parse, beautify, and inspect raw WHOIS text records and RDAP JSON responses with structured registrar, DNS, and date fields.
IPv4 Subnet & CIDR Calculator
Calculate network address, broadcast address, netmask, usable host range, and wildcard mask from any CIDR.
IPv6 Address Compressor & Expander
Compress IPv6 addresses to standard RFC 5952 notation, expand to 32 hex digits, and generate reverse DNS.
DNS Record Formatter & Syntax Validator
Parse, validate, and format DNS record syntax for A, AAAA, CNAME, MX, TXT, SPF, DKIM, and DMARC.
MAC Address Generator & OUI Formatter
Generate randomized unicast MAC addresses and format in colon, hyphen, dot, or raw hexadecimal notation.
HTTP Status Code Search & Reference
Searchable encyclopedia of all HTTP status codes (1xx–5xx) with RFC definitions, caching rules, and debugging tips.
cURL to JavaScript Fetch & Python Converter
Convert complex cURL terminal commands into modern JavaScript fetch() and Python requests code snippets.
CIDR to IP Range & IP Aggregator
Convert CIDR blocks to start and end IP addresses, or calculate the minimal CIDR block enclosing an IP range.
IP to Binary, Hex & Decimal Converter
Convert IPv4 addresses between dotted-decimal, 32-bit binary, hexadecimal, and unsigned 32-bit integer formats.
Network MTU & MSS Overhead Calculator
Calculate TCP MSS, UDP payload limits, and header overhead for Ethernet, IPv4, IPv6, PPPoE, IPsec, and WireGuard.
Deep URL Parser & Query String Editor
Break down URLs into protocol, host, port, path, hash, and interactive query parameter editor.
Base64 Data URI Analyzer & Tester
Inspect, test, and measure byte size overhead of inline Base64 data: URIs vs standard HTTP downloads.
HTTP Security Headers Generator
Generate and validate Content-Security-Policy (CSP), HSTS, X-Frame-Options, and Permissions-Policy headers.
DNS Propagation Query Builder & Helper
Generate direct diagnostic lookup commands (dig, nslookup) and links for global resolvers across multiple countries.
VoIP Codec Packet Bandwidth Calculator
Calculate total Ethernet bandwidth consumption for VoIP calls across G.711, G.729, G.722, and Opus codecs.
Punycode & IDN Domain Name Converter
Convert Internationalized Domain Names (IDN) with accents or emojis into DNS-compatible Punycode (xn--) and back.
Public vs Private IP Address Classifier
Identify whether an IP belongs to RFC 1918 Private, Loopback, Carrier-Grade NAT (CGNAT), Link-Local, or Public space.
TCP & UDP Common Ports Directory
Search 300+ standard IANA well-known and registered port numbers by port, protocol, service, or keyword.
HAR File Analyzer & Network Log Viewer
Parse HTTP Archive (.har) files in-browser: inspect request counts, total payload transfer, status codes, and timings.
Bandwidth & Data Rate Unit Converter
Convert data rates between bits/s, Kbps, Mbps, Gbps, Bytes/s, KB/s, MB/s, and binary Kibit/Mibit units.
SSL/TLS Handshake Step-by-Step Simulator
Interactive visual simulator comparing TLS 1.2 (2-RTT) and TLS 1.3 (1-RTT / 0-RTT) handshake packet flows and latency.
WebSocket Connection Tester
Test WebSocket endpoints in real-time — connect, send custom JSON messages, and observe live server responses in a browser-native WS client.
HTTP Request Headers Inspector
View all HTTP request headers your browser sends — User-Agent, Accept-Language, Accept-Encoding, cookies, and more — in a readable formatted table.
Network Speed & Bandwidth Calculator
Convert between network speed units (Mbps, Gbps, MB/s, Kbps) and calculate exact file download/upload times at any connection speed.
CIDR Subnet & IP Range Calculator
Calculate subnet mask, usable hosts, network/broadcast addresses, and full IP range for any IPv4 CIDR notation (e.g. 192.168.1.0/24).
CIDR Subnet & IP Range Calculator
Calculate subnet mask, usable hosts, network/broadcast addresses, and full IP range for any IPv4 CIDR notation (e.g. 192.168.1.0/24).
CORS Policy Explainer & Header Builder
Understand CORS errors, build correct Access-Control-Allow-* response headers, and test cross-origin requests with a visual policy configuration UI.
IDN Punycode Converter Tool
Convert Internationalized Domain Names (IDN) with non-ASCII and Unicode characters to RFC 3492 Punycode (xn--).
DNS Lookup Tool
Query live DNS records including A, AAAA, MX, TXT, NS, CNAME, and SOA records via public DoH.
IP Lookup & Geolocation Tool
Lookup your public IP address or inspect any IPv4/IPv6 address for country, city, ISP, and ASN.
Reverse IP Lookup Tool
Find hostname and PTR reverse DNS records for any IPv4 or IPv6 address.
SSL Certificate Lookup Tool
Inspect domain SSL/TLS certificate transparency logs, issuer, expiration, and SAN domains.
WHOIS / RDAP Domain Lookup
Query official ICANN RDAP/WHOIS registry records for domain creation, expiration, registrar, and nameservers.
HTTP Headers & Security Checker
Analyze critical website HTTP security headers including HSTS, CSP, X-Frame-Options, and Referrer-Policy.
Safe URL & Phishing Checker
Analyze suspicious links and URLs for phishing indicators, malicious TLDs, IP obfuscation, and URL shorteners.
Google Cache & Archive Checker
Instantly view Google Cache, text-only cache, and Wayback Machine historical archives for any URL.
URL Redirect & Canonical Checker
Analyze URL redirect patterns, trailing-slash behavior, HTTPS canonicalization, and query parameter handling.
Password Strength & Entropy Checker
Evaluate password entropy (bits), brute-force crack time, character diversity, and security vulnerabilities.
Meta Tags & Social Preview Checker
Inspect, validate, and generate Open Graph, Twitter Cards, and SEO HTML meta tags with rich card preview.
Website Hosting & Cloud Provider Checker
Detect which cloud infrastructure or hosting provider (AWS, Cloudflare, Google Cloud, Vercel, Netlify) powers any website.