🛠️ Developer Tools
Essential utilities for coding and web development.
JSON Formatter & Validator
Beautify, minify and validate JSON data with syntax highlighting and error detection.
Base64 Encode / Decode
Encode text to Base64 or decode Base64 strings back to plain text instantly.
URL Encode / Decode
Encode special characters for URLs or decode percent-encoded strings.
HTML Entity Encode / Decode
Convert special characters to HTML entities and back. Prevent XSS safely.
Lorem Ipsum Generator
Generate placeholder text — paragraphs, sentences, or words for your designs and mockups.
✍️ Text & Writing Tools
Helpful utilities for writers, students, and content creators.
🎨 Design & Utility Tools
Color tools, password generators, and everyday converters.
Color Picker & Converter
Pick colors visually and convert between HEX, RGB, and HSL formats instantly.
Password Generator
Generate strong, secure random passwords. Customize length, symbols and complexity.
Unit Converter
Convert between metric and imperial units — length, weight, temperature, speed and more.
Why Guangmings Tools?
Lightning Fast
All tools run entirely in your browser — no server round-trips. Results are instant, even on slow connections.
100% Private
Your data never leaves your device. We don't send, store, or log any of the content you process with our tools.
Always Free
No sign-up, no paywall, no hidden limits. Every tool is completely free to use, forever.