Base64 Encode & Decode Online Free
Convert text to Base64 or decode Base64 strings back to plain text instantly. This free tool runs entirely in your browser, so sensitive data like API keys and credentials never leaves your machine.
How It Works
Encode:
Input: Hello World
Output: SGVsbG8gV29ybGQ=
Decode:
Input: dG9vbGluLmlv
Output: toolin.ioCommon Use Cases
- Encoding credentials for HTTP Basic Authentication headers
- Embedding small images as data URIs in HTML or CSS
- Decoding Base64 payloads in JWT tokens
- Encoding binary data for JSON transport
Frequently Asked Questions
- Is Base64 encoding the same as encryption?
- No. Base64 is an encoding scheme, not encryption. It converts binary data into ASCII characters for safe transport, but anyone can decode it. Never rely on Base64 alone to protect sensitive data.
- Can I encode files to Base64?
- Yes. You can drag and drop a file into the tool and it will produce the Base64-encoded representation of the file contents, which is useful for embedding images or small assets.
- Is my data safe?
- Absolutely. All encoding and decoding happens in your browser using JavaScript. No data is sent to any server.
100% Private & Secure
This tool runs entirely in your browser. Your files and data never leave your device.