JSON Formatter & Validator
Validate JSON and format it for reading or compact transfer.
DeveloperDeveloper tools
Base64 Encoder / Decoder
Encode Unicode text as Base64 and decode it back.
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How to use base64 encoder / decoder
- Enter ordinary text or an existing Base64 string in Input.
- Choose Encode or Decode in Operation.
- Select Process input and verify the text before copying or downloading it.
Work through an example
Encode UTF-8 text, decode a known Base64 example, and distinguish text encoding from encryption or binary file conversion.
Round-trip Unicode text through Base64 →Formats, privacy, and practical limits
This tool processes the values you enter in your browser. No account or upload to ERITHRA is required.
Files and generated results exist only for this tab session. Download any result you want to keep before leaving the page. Browsers may use temporary memory or disk cache while processing.
Frequently asked questions
Does Base64 keep a password secret?
No. Base64 is reversible encoding and provides no encryption or confidentiality.
Why can a Base64 file fail to decode here?
This tool decodes UTF-8 text. A valid Base64 payload containing arbitrary binary file bytes may not be valid UTF-8 text.