Base64 Encoder / Decoder
Instantly convert text to Base64 or decode Base64 back to text.
About Base64 Encoder / Decoder
Bitlist's Base64 Converter is a fast, reliable, and privacy-focused tool for developers. It allows you to encode UTF-8 text into Base64 format or decode Base64 strings back into human-readable text.
Features
- Instant Conversion: Results appear automatically as you type. No clicking "Convert" required.
- UTF-8 Support: Correctly handles special characters, emojis, and non-Latin scripts (e.g., "Hello 🌍").
- Client-Side Only: Your data never leaves your browser. Encoding and decoding happen locally using modern JavaScript APIs.
- Large Payload Ready: Capable of handling large text blocks without freezing.
Common Use Cases
- Data Transmission: Ensure safe transmission of binary data (like images or credentials) over protocols like HTTP or SMTP.
- Basic Auth: Encode
username:passwordcombinations for HTTP Basic Authentication headers. - Debugging: Decode JWT payloads (excluding signatures), messy email headers, or obscure API responses.
Frequently Asked Questions
Is Base64 encryption?
No. Base64 is an encoding scheme, not encryption. It does not secure data; it simply formats it. Anyone can decode a Base64 string. Never use it to "hide" sensitive secrets.
Why do I see "=" at the end?
The equals sign = is used for padding. Base64 strings must have a length
that is a multiple of 4. Padding ensures the structure is valid for decoders.