Encode text to Base64 or decode Base64 strings back to readable text directly in your browser.
Encode UTF-8 text to Base64 or decode Base64 back into readable text directly in your browser.
A quick overview of the current conversion mode, input size, and validation status.
The current operation uses UTF-8 for text conversion and standard Base64 encoding.
Measured using UTF-8 encoding.
Empty until a valid conversion is available.
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The Base64 Encoder / Decoder converts UTF-8 text to Base64 and decodes Base64 values back into readable text. It is useful for working with APIs, configuration files, authentication data, encoded payloads, and other systems that represent binary or text data in a Base64-compatible format. All processing is performed locally in your browser.
Base64 is an encoding format that represents binary data using a limited set of ASCII characters. It is commonly used when data needs to travel through systems that are designed primarily for text.
Base64 is encoding, not encryption. Anyone who has a Base64 value can decode it, so Base64 should never be treated as a security mechanism.
The encoder converts UTF-8 text into standard Base64. The decoder performs the reverse operation and converts a valid Base64 value back into UTF-8 text.
The decoder accepts normal Base64 whitespace and removes it before processing. Invalid characters, incorrect padding, malformed lengths, and invalid UTF-8 data are reported instead of silently producing an incorrect result.
Text is converted using UTF-8 before Base64 encoding. This allows the tool to correctly handle characters outside the basic ASCII range, including accented characters, Turkish characters, symbols, and emoji.
When decoding, the resulting bytes are validated as UTF-8. A Base64 string can therefore be syntactically valid while still producing an error if its decoded bytes do not represent valid UTF-8 text.
Base64 does not provide confidentiality, authentication, or access control. Encoding a password, API key, token, or other secret with Base64 does not make it secure.
Sensitive information should be protected using appropriate authentication, authorization, encryption, and secret-management mechanisms.
This tool performs Base64 encoding and decoding directly in your browser. The entered text and generated output are not intentionally uploaded to a ToolTunnel backend for processing.
Even though processing is local, avoid entering sensitive production credentials or secrets into any online tool unless you understand and accept the associated risks.
No. Base64 is an encoding format, not encryption. Base64 data can be decoded without a secret key.
No. Encoding a secret with Base64 does not protect it. Secrets should be handled using appropriate security controls and secret-management systems.
Yes. The tool uses UTF-8 for text conversion, so Unicode characters such as Turkish letters, accented characters, and emoji are supported.
A Base64 value can have valid Base64 syntax while its decoded bytes are not valid UTF-8 text. This tool reports that situation instead of returning corrupted text.
Yes. Whitespace is removed before decoding, which allows Base64 values containing line breaks or spaces to be processed.
The current tool is designed for text and UTF-8 data. It should not be used to interpret arbitrary binary files as UTF-8 text.
The conversion itself runs locally in your browser. The tool does not intentionally send the entered value to a ToolTunnel processing backend.
Base64 represents every group of three input bytes using four encoded characters, so the encoded representation is typically about one-third larger than the original binary data.