Base64 Encoder & Decoder | DevNexus

How It Works

Select Mode

Choose whether you want to Encode text to Base64, or Decode a Base64 string back to normal text.

Input Data

Paste or type your text/Base64 into the primary input box.

Instant Results

The tool immediately converts your data natively in the browser without any page reloads.

Copy Output

Click the copy button on the output pane to grab the converted string. Use the clear button to start over.

Encode and Decode Base64 in Your Browser

Base64 encoding turns binary data into a safe ASCII text form so it can be stored or sent over text-only channels. Our free Base64 Encoder & Decoder runs entirely in your browser: paste text to encode or a Base64 string to decode, and get instant results. All processing is client-side—nothing is sent to any server.

Why use Base64?

Base64 is widely used in data URIs, email attachments, API payloads, and storing binary data in JSON or XML. Our tool supports full UTF-8, including emojis and non-Latin characters, unlike the built-in browser btoa/atob which only handle Latin1.

When to encode vs decode

Use Encode when you need to turn plain text (or binary represented as text) into Base64 for embedding or transmission. Use Decode when you have a Base64 string and need to recover the original text. The tool updates results in real time as you type.

Frequently Asked Questions

What is Base64 encoding?

Base64 is an encoding scheme used to convert binary data into a printable ASCII string format. It is commonly used when there is a need to encode binary data, especially when that data needs to be stored and transferred over media that are designed to deal with text.

Is this tool UTF-8 safe?

Yes! While standard browser base64 functions (btoa and atob) fail with characters outside the Latin1 range (like emojis or special characters), our tool perfectly handles all UTF-8 characters safely.

Is my data sent to a server?

No. The entire encoding and decoding process runs 100% locally in your browser using JavaScript. No text or base64 data is ever transmitted to or stored on our servers.

Can I decode non-text files?

This specific tool is optimized for converting between Text and Base64 strings. If you paste a Base64 string that represents an image or binary file, the resulting text output will likely appear as garbled characters.

How It Works

Select Mode

Choose whether you want to Encode text to Base64, or Decode a Base64 string back to normal text.

Input Data

Paste or type your text/Base64 into the primary input box.

Instant Results

The tool immediately converts your data natively in the browser without any page reloads.

Copy Output

Click the copy button on the output pane to grab the converted string. Use the clear button to start over.

Encode and Decode Base64 in Your Browser

Why use Base64?

When to encode vs decode

Frequently Asked Questions

What is Base64 encoding?

Is this tool UTF-8 safe?

Yes! While standard browser base64 functions (btoa and atob) fail with characters outside the Latin1 range (like emojis or special characters), our tool perfectly handles all UTF-8 characters safely.

Is my data sent to a server?

No. The entire encoding and decoding process runs 100% locally in your browser using JavaScript. No text or base64 data is ever transmitted to or stored on our servers.

Can I decode non-text files?