实用工具

免费在线开发者工具，支持编码、解码与数据转换

Available Tools

Base64 Encoder/Decoder
Most Popular

Encode text to Base64 and decode Base64 to text with real-time conversion and validation.

Real-time conversion
UTF-8 support
URL Encoder/Decoder
New

Encode URLs for safe transmission and decode URL-encoded strings back to readable format.

Instant encoding/decoding
RFC 3986 compliant
JSON Viewer
Existing

Parse, validate, format, and visualize JSON data with syntax highlighting.

Syntax highlighting
Format & minify

Why Choose Our Developer Tools?

Lightning Fast

All processing happens instantly in your browser. No server requests, no delays - just immediate results.

Privacy First

Your data never leaves your browser. All encoding and decoding happens locally, ensuring complete privacy.

Developer Focused

Built by developers for developers. Clean interface, robust error handling, and comprehensive validation.

Common Use Cases

Base64 Encoding

  • • API authentication tokens
  • • Email attachment encoding
  • • Data URL images (HTML/CSS)
  • • JWT token handling
  • • Basic HTTP authentication

URL Encoding

  • • Query parameter encoding
  • • Form data submission
  • • API endpoint construction
  • • Browser URL handling
  • • International character support

🚀 Pro Tips

  • • Base64 is encoding, not encryption - use it for data transmission, not security
  • • URL encoding ensures safe transmission of special characters in URLs
  • • All tools support UTF-8 characters including emojis and international text
  • • Use the copy buttons to quickly transfer results between tools
  • • Real-time validation helps catch errors before you use the encoded data