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Base64 Encode/Decode

Online Base64 encoder/decoder with full UTF-8 (Chinese) support.

使い方

Paste text, choose encode or decode, and copy the result.

関連ツール

Cookie FormatterParse Cookie strings to JSON/table with URL decoding, or build Cookie strings from JSON. Gzip Compress/DecompressCompress text to Base64-encoded Gzip and decompress it back, with compression ratio. Hex Encode/Decode & Hex Dump ViewerConvert text to/from hex, plus a hex dump viewer with offsets and ASCII columns. HTML Encode/Decode & HTML to JSHTML escape/decode, deep numeric-entity encoding, and convert HTML to JS string literals. JWT DecoderDecode JWT header and payload to JSON, showing exp/iat fields. MD5 Hash GeneratorCompute MD5 digests (32 hex chars) for UTF-8 text, fully in your browser.

Data is processed entirely in your browser; nothing is uploaded to our servers.