B64
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text
What is Base64 Encoder / Decoder?
Base64 Encoder / Decoder converts text to Base64 encoding and back. Base64 is a binary-to-text encoding scheme used to transmit binary data over text-based systems like email (MIME), URLs, and HTML. Developers frequently use Base64 to embed images in CSS, encode API credentials, or transmit data in JSON payloads.
How to Use This Tool
- Paste your plain text and click Encode to convert it to Base64
- Or paste a Base64 string and click Decode to reveal the original text
- The result appears instantly — click Copy to use it
- Toggle between encode and decode modes as needed
Common Use Cases
- Encoding API keys or credentials for HTTP Authorization headers
- Embedding small images or icons as data URIs in CSS or HTML
- Encoding binary data for safe transmission in JSON or XML payloads
- Decoding Base64 strings from emails, JWTs, or encoded URLs
Frequently Asked Questions
Is Base64 encoding the same as encryption?
No. Base64 is an encoding scheme, not encryption. Anyone can decode a Base64 string. It is meant for data format conversion, not security.
Why do some Base64 strings end with = signs?
The = padding characters ensure the encoded string length is a multiple of 4. They are standard in Base64 and can be safely included.
Can I encode binary files?
This tool encodes text to Base64. For binary files like images, use our Image to Base64 tool instead.
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