Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 to text. Use URL-safe mode for query strings and cookies. All processing runs in your browser.

URL-safe (replace +/ with -_, no padding)

Input

Output

Example

Type Hello, world! and click Encode to get SGVsbG8sIHdvcmxkIQ==. Use URL-safe for values in URLs or cookies (no +/=).

No. Encoding and decoding run entirely in your browser.

When putting Base64 in URLs, query params, or cookies. It uses - and _ instead of + and / and omits padding.

Encode or decode URL components and query strings. Handles special characters.

Encode or decode HTML entities. Auto-detect and copy result.