Tools

Browser-based tools for networking, security, and web development

Client-side tools and utilities that run entirely in your browser. No data is sent to servers - everything stays on your device.

VLAN planning tool with IPv4 and IPv6 addressing guidance

Calculate network addresses, broadcast addresses, and host ranges

Identify hash types by analyzing format and length

Encode and decode HTML entities for XSS prevention

Encode and decode URLs for safe transmission

Encode and decode Base64 strings

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes

Generate optimized email preheader text with preview and HTML code

Generate campaign tracking URLs with UTM parameters

Parse and inspect SSL/TLS certificates (X.509)

Decode and inspect JSON Web Tokens (JWT)

Generate QR codes from text, URLs, or contact information

Convert between Unix timestamps and human-readable dates

All tools run entirely in your browser. No data is sent to any server or stored remotely.