Base64 encoder & decoder

How to use

1. Choose a mode. Select Encode to turn text into Base64, or Decode to turn Base64 back into text.
2. Enter your input. Type or paste your text; the result updates live as you go.
3. Optional URL-safe. Enable URL-safe output to use -_ instead of +/ and drop the padding.
4. Copy the result. Copy the output with one click. Nothing was uploaded.

Features

• UTF-8 safe. Correctly encodes and decodes Unicode text including emoji and accents.
• URL-safe variant. Produce Base64URL output (-_ , no padding) for tokens and query strings.
• File to Base64. Turn any file into a Base64 data URI ready to embed in HTML or CSS.
• Nothing leaves your device. Encoding and decoding run locally, so your data is never uploaded.
• Live and instant. The result updates as you type — no button needed for text.

When to use it

• Decode a Base64 string from a JWT, config file or email header.
• Encode text or credentials into Base64 for a header or payload.
• Turn a small image into a data URI to inline in CSS or HTML.
• Create URL-safe Base64 for a token or query parameter.
• Quickly check what a Base64 blob actually contains.

Is it private?

Encoding and decoding happen locally in your browser and are never uploaded.