Base64 Encoder / Decoder
Browser-based
Convert plain text to Base64-encoded strings and decode Base64 back to readable text. Fully client-side — nothing is sent anywhere.
Processed 100% in your browser — your file never leaves this device.
- Free forever
- No signup
- Works offline
- Ad-free
About Base64 Encoder / Decoder
Convert between plain text and Base64 whenever you need a text-safe representation of data — embedding images in HTML or CSS, passing values in URLs, or inspecting tokens. Encode and decode instantly with no upload step; all processing happens locally in your browser.
How to use
- 1
Enter your text or Base64 string.
- 2
Click "Encode" or "Decode".
- 3
Copy the result.