About ComUtil

Our Mission

ComUtil.com provides free, fast, and secure developer tools for everyday tasks. We believe that essential utilities like encoding, decoding, formatting, and data conversion should be accessible to everyone without registration, downloads, or hidden fees.

Our tools are designed with developers in mind: clean interfaces, keyboard shortcuts, and no unnecessary clutter. Whether you're debugging an API response, encoding data for transmission, or looking up IP information, ComUtil has you covered.

Privacy & Security

Your privacy matters. Some ComUtil workflows run directly in your browser, while others send request data to ComUtil for processing or lookup depending on the tool and the job.

  • No registration required
  • Clear boundaries between browser tools and lookup tools
  • Client-side processing whenever possible
  • HTTPS encryption for all connections
Browser-first privacy guide

Need the practical trust boundary first? Open the guide that separates browser-local workflows, server-handled text tools, and lookup tools.

Open browser-first guide Privacy Policy
Available Tools

Encoding & Decoding

  • Base64 Encoder/Decoder
  • URL Encoder/Decoder
  • Unicode Converter

Data Formatting

  • JSON Editor & Formatter
  • HTML Preview
  • Diff Checker

Generators

  • Hash Generator (MD5, SHA)
  • UUID Generator
  • QR Code Generator

Network Tools

  • IP Address Lookup
  • Domain WHOIS
  • SSL Certificate Info

Time & Date

  • Unix Timestamp Converter
  • Cron Expression Parser

Other Tools

  • JWT Decoder
  • Regex Tester
  • Color Converter
  • String Length Calculator
Keyboard Shortcuts

We support keyboard shortcuts for power users. Common shortcuts across tools:

Ctrl + Enter Execute primary action (Encode, Generate, etc.)
Ctrl + Shift + C Copy output to clipboard
Ctrl + Shift + F Format (in JSON Editor)
Contact

Have suggestions or found a bug? We'd love to hear from you.

Email: hwanico@gmail.com