Base64エンコーダー・デコーダー

Ali Hub DevToolsでBase64エンコーダー・デコーダーを使用できます。入力確認、結果、プライバシー情報、文書化された制限を明確に示します。

Encode text to Base64 and decode Base64 text online while reviewing padding, Unicode, and transport-safe output. 日本語 locale.

Make HTML structure easier to inspect

This tool converts text to Base64 and decodes Base64 back to text. Base64 represents bytes with a limited ASCII alphabet s...

Base64 maps groups of input bytes to printable characters and may use padding at the end. The result depends on the chosen...

Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...
Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...

Read markup structure
The encoder reads bytes, groups them into six-bit values, maps those values to the Base64 alphabet, and adds padding when ...
Apply indentation
The encoder reads bytes, groups them into six-bit values, maps those values to the Base64 alphabet, and adds padding when ...
Preserve content
The encoder reads bytes, groups them into six-bit values, maps those values to the Base64 alphabet, and adds padding when ...

Exact parser recovery, optional-tag handling, whitespace policy, embedded-language behavior, and error wording should be c...

A successful round trip returns the same text or bytes when the same encoding and alphabet are used. A different length is...

Common mistakes include treating Base64 as encryption, decoding a URL-safe value with the standard alphabet, changing padd...

This converter does not encrypt, sign, compress, identify a file type, or verify trust. Very large inputs may be unsuitabl...

Is Base64 encryption?

Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...

A successful round trip returns the same text or bytes when the same encoding and alphabet are used. A different length is...

Does encoding reduce size?

Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...

A successful round trip returns the same text or bytes when the same encoding and alphabet are used. A different length is...

How is Unicode handled?

Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...

A successful round trip returns the same text or bytes when the same encoding and alphabet are used. A different length is...

What does equals padding mean?

Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...

A successful round trip returns the same text or bytes when the same encoding and alphabet are used. A different length is...

Can I decode a data URI?

Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...

A successful round trip returns the same text or bytes when the same encoding and alphabet are used. A different length is...

Is URL-safe Base64 different?

Choose encode or decode, enter the source, run the conversion, and inspect the result. For text, confirm the intended char...

A successful round trip returns the same text or bytes when the same encoding and alphabet are used. A different length is...