Base64 Encoder / Decoder

Encode plain text to Base64 format or decode Base64 strings safely inside your browser.

Base64 Encoder / Decoder について

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. Toolerk allows you to encode and decode Base64 data with full Unicode (UTF-8) support, ensuring accented characters, emojis, and symbols translate properly.

Base64 Encoder / Decoder の使い方

1Select whether you want to "Encode" or "Decode".
2Enter your input string into the input field.
3View the converted Base64 or plain text output automatically generated below.
4Click the copy button to grab the result.

このツールを使う場面

•Encoding binary tokens, basic authentication headers, or API secrets.
•Embedding inline SVG or small image data directly in HTML or CSS.
•Decoding obfuscated parameters in web requests or logs.
•Data serialization for transfer across text-only protocols.

結果に期待できること

Accurate Base64 encoded or decoded text conforming to RFC 4648 standards with full UTF-8 character preservation.

プライバシーは100%保護されています（ローカル処理）

All Base64 encoding and decoding operations take place on your local CPU. Credentials, authorization headers, or sensitive text are never transmitted over the internet.

よくある質問 (FAQ)

Does Base64 encrypt my text?

No, Base64 is an encoding scheme, not encryption. Anyone can decode a Base64 string back to its original form.

Does this tool support emojis and non-ASCII characters?

Yes, our implementation uses UTF-8 byte serialization to handle all Unicode symbols, characters, and emojis cleanly.

Is there a character limit?

Because processing happens on your local device, you can encode and decode very large strings without server size restrictions.

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Base64 Encoder / Decoder