URL Encoder & Decoder
Encode or decode URL components locally without sending values to a server.
Developer
Free Base64 Encoder & Decoder
Encode UTF-8 text to Base64 or decode Base64 locally in your browser without uploading the value.
Your input is processed only as required by this tool.
Free Base64 Encoder & Decoder
Base64 represents binary data as printable text and is commonly used in APIs, data URLs, email formats and development workflows. This tool converts Unicode text to UTF-8 bytes before encoding and reverses that process when decoding, entirely inside your browser.
How to use it
- Paste or type the value you want to process.
- Choose the operation or algorithm when the tool offers options.
- Generate the result locally in your browser, then copy it without uploading the input to Ciatto Tools.
How to read the result
Base64 is an encoding format, not encryption. Anyone with the encoded value can decode it, so it should never be treated as a way to protect passwords, tokens or other secrets.
Limitations
Invalid Base64 input or decoded bytes that are not valid UTF-8 will fail instead of silently producing corrupted text. Very large payloads may be better handled with local command-line tools.
Frequently asked questions
Is Base64 encryption?
No. Base64 only changes how data is represented and provides no confidentiality.
Does my value leave the browser?
No. Encoding and decoding are performed by the browser runtime and do not require the Ciatto Tools API.