Base64 Encode / Decode

Encode text and files to Base64 or decode Base64 strings — entirely in your browser.

Your files never leave your device

Binary file → Base64

Text (or load a file above)

Output

—

Decode expects valid Base64 and outputs UTF-8 text. For binary output after decoding, use your browser or a script to write bytes from Base64.

How It Works

Step 1

Type text, or choose a binary file to get a Base64 string.

Step 2

Switch between Encode and Decode. Move output back into the input with one click.

Step 3

Copy Base64 or decoded UTF-8 text for configs, APIs, or debugging.

Very large files may be slow or hit browser memory limits. For huge files, prefer desktop tools.

We show UTF-8 text. If your Base64 represents binary (e.g. an image), decode outside the tool or use the Base64 string as needed.

Format, validate and beautify JSON data online.

Encode or decode URLs, query strings, and path segments safely.

Minify or beautify HTML, CSS, and JavaScript locally in your browser.

Convert HEX, RGB, HSL, and CMYK with a picker and quick palettes.