Is data sent anywhere?

No — Base64 encoding uses the browser's built-in btoa() function.

Base64 encodes binary or text data as ASCII characters, used in APIs, email attachments, and data URLs.

Can I decode Base64 too?

Yes — upload a .txt file containing Base64 text to decode it back.

Is there a size limit?

Up to 5MB. Base64 output is ~33% larger than the input.

Free Base64 Encoder Online

Convert files instantly — 100% free, no signup, no upload.

No Upload — Files stay on your device

No Signup — No account required

No Charges — 100% free forever

No Watermark — Clean output always

Drop your file here

or click to browse

.txt, .json, .csv, .xml · Max 5MB

How It Works

Select

Drop or click to pick your file

Convert

Instant processing in your browser

Download

Save the result to your device

Why EaseToolz?

🔒 Files stay on your device — 100% private

⚡ Instant conversion — no waiting

🆓 Completely free — no hidden fees

📵 No signup — no account needed

🚫 No watermark — clean output every time

📱 Works on any device including mobile

Encode text or files to Base64 or decode Base64 back to the original. Base64 is widely used in APIs, JWT tokens, email attachments, and data URIs. Encoding and decoding uses the browser's native btoa()/atob() functions — no server, instant results.