Base64 Encoder & Decoder
Encode text to Base64 and decode Base64 strings back to plain text. Full UTF-8 and special character support without data transmission.
How to Use Base64 Encoder & Decoder
- Enter Text: Paste plain text or a Base64 string into the input area.
- Select Action: Click Encode to create Base64, or Decode to extract the original text.
- Copy Converted String: Copy the result to your clipboard with one click.
Key Features & Capabilities
- Full UTF-8 Support: Properly encodes emojis, accents, and international Unicode characters without corruption.
- Live Two-Way Conversion: Encode and decode seamlessly with instant error feedback for invalid Base64.
- URL-Safe Option: Option to generate URL-safe Base64 strings (- and _ instead of + and /).
- 100% In-Browser Privacy: Your text never leaves your device or touches an external server.
Common Use Cases
- Web Development: Encode authorization headers, data URIs, or token payloads.
- Data Transport: Safely encode special text characters for transmission in protocols that only support ASCII.
Frequently Asked Questions
- Does this handle emojis and Chinese/Arabic characters?
- Yes! Unlike native window.btoa, our encoder uses full UTF-8 byte encoding to support all Unicode symbols.
- Is Base64 encryption?
- No, Base64 is an encoding format, not encryption. Anyone can decode a Base64 string back to plain text.
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