UTF-8 Validator Tool
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Try ConvertersUTF-8 Byte Sequence Validator
Check if your byte sequence is valid UTF-8 encoding. Enter bytes in hexadecimal format (e.g., "48 65 6C 6C 6F" for "Hello") or paste your text to analyze its UTF-8 encoding.
What is UTF-8 Encoding?
UTF-8 is the most widely used character encoding on the web, capable of representing all Unicode characters while maintaining backward compatibility with ASCII. Our UTF-8 validator helps developers ensure their byte sequences comply with the UTF-8 standard.
Why Validate UTF-8?
Valid UTF-8 encoding is crucial for:
- Proper text display in web applications
- Data integrity when transferring text between systems
- Preventing security vulnerabilities from malformed sequences
- Ensuring database compatibility with multilingual content
How Our UTF-8 Validator Works
Our tool checks byte sequences against the UTF-8 specification (RFC 3629) by:
- Analyzing the leading bits of each byte to determine the character length
- Verifying continuation bytes have the correct format (10xxxxxx)
- Checking for overlong encodings (invalid representations)
- Validating code point ranges (U+0000 to U+10FFFF)
- Ensuring proper surrogate pair handling
Common UTF-8 Validation Scenarios
This tool helps identify:
- Incomplete multi-byte sequences
- Invalid byte sequences
- Overlong encodings
- Surrogate pairs in UTF-8
- Non-character code points
