Unicode Character Analyzer

Analyze any character's Unicode properties: code point, UTF-8/UTF-16 bytes, HTML entity, URL encoding. Free, instant, 100% private.

About Unicode Character Analyzer

Inspect any character or text to see its full Unicode details. Understand how characters are encoded in UTF-8 and UTF-16, find HTML entities, and get URL-encoded forms. Essential for web developers, content creators, and anyone working with international text. All processing happens in your browser — nothing is sent to any server.

Code Point Lookup

Shows Unicode U+XXXX code point, decimal value, and character category for any input. Instantly identify any character.

UTF-8 & UTF-16 Bytes

See exact byte representation in both encodings. Understand how Unicode encodes characters from 1 to 4 bytes.

HTML & URL Forms

Get decimal/hex HTML entities and percent-encoded URL form for each character. Essential for web development.

Surrogate Pair Aware

Correctly handles emoji and astral plane characters properly. Works with 4+ byte code points using ES6 iteration.

📋 Common Use Cases

Development Workflow

Speed up common dev tasks — encoding, formatting, validation — without writing throwaway scripts.

Debugging & Testing

Isolate and verify code, data, or encoding issues during development and debugging.

Learning & Reference

Experiment with encoding, hashing, and transformation concepts interactively.

Production Optimization

Minify, validate, and optimize code and assets before deployment.

🪜 How to Use This Tool

  1. Enter your input
    Paste code, JSON, encoded strings, or other input. File uploads also supported where relevant.
  2. Configure tool options
    Set parameters like indentation, encoding type, hash algorithm, or validation rules.
  3. Process and view results
    Click to encode, decode, format, minify, or validate. Results appear with appropriate highlighting.
  4. Copy and use
    Copy output to clipboard for immediate use in your project, config, or debugging session.

📚 Related Guides

Frequently Asked Questions

Are these dev tools free?▼
Yes. All dev tools are completely free. No signup, no account.
Is my data sent to a server?▼
No. Base64 encoding, URL encoding, JWT decoding, hash generation, and regex testing all happen in your browser. Your tokens and secrets stay on your device.
Can I decode JWTs safely?▼
Yes. JWT decoding happens entirely in your browser. The token never leaves your device. Only the header and payload are decoded — signatures are not verified server-side.