Base64 Encoder/Decoder
Encode and decode Base64 strings online. Convert text to Base64 or decode Base64 back to readable text. Useful for encoding data for email attachments, API authentication tokens, and data transmission. Also handles URL-safe Base64 encoding. Works entirely in your browser.
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How to Use Base64 Encoder/Decoder
- Enter text in the input field.
- Click Encode to convert to Base64 or Decode to convert from Base64.
- Copy the result.
Why Use Base64 Encoder/Decoder
Base64 encoding is used to represent binary data as text — for email attachments, data URLs, API tokens, and embedded images in HTML/CSS. This tool converts text to Base64 and decodes Base64 back to text, supporting both standard and URL-safe variants.
Frequently Asked Questions
How do I encode text to Base64?
Paste your text in the input field and click Encode. The Base64 encoded output appears instantly.
How do I decode Base64?
Paste the Base64 string in the input field and click Decode. The decoded text appears immediately.
Can I encode files to Base64?
Yes. You can upload a file to encode it as a Base64 string for embedding in code or data transfer.
Is my data uploaded to a server?
No. All encoding and decoding happens locally in your browser. Your data never leaves your device.
What is Base64 used for?
Base64 is commonly used to encode binary data as text for use in email, data URLs, APIs, and embedding images in code.