Hex Validator
Validate hexadecimal strings, check padding, and preview decoded byte length with UTF-8 preview when applicable.
When to validate hex strings
Hexadecimal payloads appear in firmware dumps, Ethereum calldata, color channels, and binary-to-text interchange. Validating length and alphabet before decoding prevents subtle off-by-one nibble bugs in scripts and smart contracts.
After validation, convert values with the Hex Binary Converter or inspect encodings using the Base64 Validator.
Frequently Asked Questions
Are spaces allowed?
Yes. Whitespace is ignored before validation and decoding.
Can I include a 0x prefix?
Yes. An optional 0x or 0X prefix is stripped before checks run.
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