Base64 Encoder & Decoder
Choose Text or File mode and Encode or Decode, then process your data instantly — free, private, and processed entirely in your browser.
About the Base64 Encoder & Decoder
Base64 is a way of representing binary data — like images, PDFs, or any file — using only plain text characters. Our free online Base64 encoder and decoder converts text or files to Base64 and back, which is useful for embedding images directly inside HTML or CSS, or transferring binary data over text-only protocols like email and JSON APIs.
Everything runs entirely inside your browser using native Web APIs — no files or text are ever uploaded to a server, so your data stays completely private and secure.
How to Use the Base64 Tool
Step 1
Choose Text or File mode
Pick whether you're working with raw text or a binary file, then choose Encode or Decode.
Step 2
Enter your data
Type or paste text, or upload a file, then click "Process" to run the conversion instantly.
Step 3
Copy or download the result
Copy the text or Base64 output to your clipboard, or download the decoded file directly.
Frequently Asked Questions
Is UTF-8 text supported?
Yes, our encoder fully supports non-ASCII text, including Hebrew, special symbols, and emojis.
Is my uploaded file uploaded to a server?
No, all FileReader reading and encoding happen locally inside your web browser.
Can I decode a Base64 string back into a real file, like a PNG?
Yes. Paste the Base64 string (or a full data: URL) in File + Decode mode and download the reconstructed binary file.
Does it cost money?
No. The Base64 encoder and decoder is 100% free to use, with no registration or account required.