Free Online Tool

The Best Free Base64 Encoder & Decoder

Encode and decode Base64 strings instantly in your browser. Works with text, URLs, and binary data. Copy results in one click.

Open Base64 Encoder — Free
No account required — ever Processed in your browser Free forever

What makes this the best free Base64 Encoder & Decoder?

Encode any text string to Base64 instantly
Decode Base64 back to readable text
Fast, client-side processing
Supports URL-safe Base64 encoding
One-click copy to clipboard
Works offline once the page is loaded

Common use cases

1

Encoding API credentials for HTTP Basic Auth headers

2

Embedding images in CSS or HTML as data URIs

3

Debugging Base64-encoded JWT payloads

4

Encoding binary data for JSON transport

Why Tools Network?

100% Private

Everything runs in your browser. All processing is done locally. Safe for confidential work.

Instant Results

No uploads, no server delays. Results update as you type — because your browser does the work.

Always Free

No trial. No credit card. No paywall after 5 uses. Every tool on this site is free, forever.

Try Base64 Encoder & Decoder now — free

No signup. No install. Open it in your browser and start using it in seconds.

Open Base64 Encoder — Free