Developer Tools
Base64 Encoder/Decoder
Encode and decode Base64 and Base64URL with full Unicode support.
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Frequently Asked Questions
- Is Base64 encryption?
- No. Base64 is an encoding scheme, not encryption. It makes binary data safe for text-based systems but provides no security.
- Does this handle Unicode correctly?
- Yes. We use TextEncoder/TextDecoder for proper UTF-8 conversion before encoding, which correctly handles emoji, CJK characters, and all Unicode.
- What is Base64URL?
- Base64URL replaces + with - and / with _, and omits padding (=). It is safe for use in URLs and filenames without escaping.
- Is my data sent to a server?
- No. All encoding and decoding happens locally in your browser. Your data never leaves your device.