Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 back to text — free online tool.
The Base64 Encoder/Decoder converts text or small files into Base64 format (often needed for embedding images in CSS/HTML or sending binary data in JSON), and can also decode Base64 strings back into readable text. Processing happens locally in your browser.
Why use the Base64 Encoder / Decoder?
- •Developers commonly need Base64 encoding to embed small images directly inside CSS or HTML using data URIs, avoiding an extra network request.
- •Base64 is also used when binary data needs to travel safely through text-only formats like JSON or XML.
- •Decoding a Base64 string lets you quickly inspect what data it actually represents, which is useful when debugging an API response or email attachment.
- •Everything is processed locally, so sensitive tokens or credentials you might be decoding are never sent anywhere.
How to use the Base64 Encoder / Decoder
- Paste text, or upload a file.
- Choose Encode or Decode.
- Copy the result.
All processing happens locally in your browser — your files are never uploaded to a server.