Base64 to Text Decoder

Worked example

Example: decode a Base64 JSON snippet from a log aggregator to read the original `{ "status": "ok" }` payload.

When to use this

• Reading encoded message bodies in integration logs.
• Decoding test fixtures copied from CI output.
• Translating Base64 env var values back to plain text.

Common examples

• UTF-8 email header value → Base64 for debugging MIME parts.
• Small JSON claim → Base64 segment inspection before JWT assembly.
• Data URL prefix stripped → decode image bytes from `data:image/png;base64,...` payloads.
• Small SVG icon → data URL for inline HTML email test.
• UTF-8 string with emoji → Base64 for API fixture matching production encoding.

Common mistakes

• Assuming every decode yields readable text—binary payloads are not UTF-8 strings.
• Double-decoding already plain text.
• Ignoring charset when legacy systems used Latin-1 bytes.

How it works

Encodes plain text to Base64 or decodes Base64 back to text on your device using standard encoding. Large inputs are processed locally.

Limitations

Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.

Privacy and file handling

Your image stays on your device and is not uploaded.