Base64 Encode / Decode

Kubernetes Secret values are base64-encoded. The Base64 Encode / Decode tool converts plain text to base64 and back, entirely in your browser, so you can build or inspect Secret data without a cluster connection.

Pick a mode, paste your text, and get the result. UTF-8 input is handled correctly, and invalid base64 is reported gracefully rather than crashing. Everything runs locally and nothing is uploaded.

• Encode - plain text to base64 (UTF-8 safe).
• Decode - base64 back to text.
• Validation - bad base64 reported as an error.
• Secret helper - build datanswer: values for Secrets.
• Copy / Download / Print - take the result anywhere.

1. Pick encode or decode.
2. Paste your text.
3. Read the result and copy it.

Example 1 - encode. "hello" -> "aGVsbG8=".

Example 2 - decode. "aGVsbG8=" -> "hello".

Example 3 - invalid. decode "!!!" -> error.

• Correct - UTF-8 aware base64.
• Safe - invalid input handled.
• Private - all in the browser.
• Useful - for Secret data.
• Copy, download or print - take it anywhere.