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Base64 Encode/Decode
Encode or decode Base64 strings.
About Base64 Encoder / Decoder
Base64 is a binary-to-text encoding scheme that represents binary data as an ASCII string. It is commonly used to embed images in HTML/CSS, transmit binary data over text-only protocols like email (MIME) and JSON APIs, and encode authentication credentials in HTTP headers. Every three bytes of input are mapped to four printable characters, making the data safe for text-based transport.
How to Use
Enter plain text and click "Encode" to convert it to a Base64 string, or paste a Base64-encoded string and click "Decode" to reveal the original content. The tool instantly validates the input and shows errors for malformed Base64. Copy the result with one click.
Common Use Cases
- Encoding images or files for inline embedding in HTML or CSS
- Decoding Base64-encoded API responses or JWT token parts
- Preparing binary data for transport in JSON payloads
- Encoding credentials for HTTP Basic Authentication headers
- Converting data URIs back to their original content
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Frequently Asked Questions About Base64 Encode/Decode
What is Base64 Encode/Decode?
Base64 Encode/Decode is a free online tool on akousa.net, a platform with 453+ browser-based utilities. Encode or decode Base64 strings. It runs entirely in your browser with no installation, signup, or data upload to any server.
How do I use Base64 Encode/Decode?
Simply open Base64 Encode/Decode on akousa.net, enter or upload your data, configure any options, and click the action button. Results appear instantly in your browser.
Is Base64 Encode/Decode free?
Yes, Base64 Encode/Decode is completely free to use with no limitations. There is no signup, no ads, and no file size restrictions. All 453+ tools on akousa.net are free and open to everyone.