Base64 File Encoder & Decoder

About Base64 File Encoder & Decoder

The Base64 File Encoder & Decoder converts any file or text to Base64 encoding, or decodes a Base64 string back to its original file or text - entirely in your browser, with nothing sent to a server. Upload a file or paste a Base64 string, choose Encode or Decode, and get the result instantly.

Base64 encoding is used in web development to embed images directly in HTML or CSS, to transmit binary data in JSON or XML payloads, to encode email attachments, and in many authentication and API contexts. This tool handles both directions - encoding files to Base64 strings and decoding Base64 strings back to files or readable text.

How to Use:

1. To encode: upload a file or paste text, then click Encode.
2. To decode: paste a Base64 string, then click Decode.
3. Copy the encoded string or download the decoded file.

Best For:

• Encoding images to Base64 for embedding in HTML or CSS
• Decoding Base64 strings received in API responses
• Converting files to Base64 for JSON or XML payloads
• Debugging Base64-encoded data in web development

FAQ:

Q: What types of files can I encode to Base64?

A: Any file type can be encoded to Base64: images, PDFs, text files, documents, and more.

Q: Is my file uploaded to a server during encoding?

A: No. All encoding and decoding runs locally in your browser.

Q: Can I decode a Base64 string back to the original image or file?

A: Yes. Paste the Base64 string and click Decode to get the original file back.

Q: Is the Base64 Encoder & Decoder free?

A: Yes, completely free with no account required.