PROFESSIONAL TOOL

Base64 Encoder / Decoder

Encode and decode Base64 data instantly with our secure, client-side tool. Perfect for developers working with APIs, data transmission, and file encoding.

Professional Base64 Encoding & Decoding Tool

Our advanced Base64 Encoder/Decoder provides secure, real-time conversion between text, files, and Base64 format. This essential tool for developers handles data encoding for APIs, email attachments, and binary data transmission. With 100% client-side processing, your data never leaves your browser, ensuring complete privacy and security. Perfect for web development, data analysis, and secure file sharing applications.

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Text

Encode/decode plain text

File

Upload and encode files

URL

Encode/decode URLs

Input Text

0 characters

Output Base64

0 characters

Processing...

Input Size
0 bytes
Output Size
0 bytes
Processing Time
0 ms
Encoding Ratio
1:1

Base64 API Integration

Integrate Base64 encoding/decoding directly into your applications with our REST API.

// JavaScript API Example
const encodeWithAPI = async (text) => {
    const response = await fetch('https://api.toolnest.com/v1/base64/encode', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
            'Authorization': 'Bearer YOUR_API_KEY'
        },
        body: JSON.stringify({ data: text })
    });
    
    return await response.json();
};

// Usage
const encoded = await encodeWithAPI('Hello World');
console.log(encoded.result); // SGVsbG8gV29ybGQ=
POST
https://api.toolnest.com/v1/base64/encode

Encode text or binary data to Base64 format. Supports JSON and form-data requests.

POST
https://api.toolnest.com/v1/base64/decode

Decode Base64 strings back to original format. Returns text or binary data.

GET
https://api.toolnest.com/v1/base64/validate/{data}

Validate if a string is properly Base64 encoded. Returns validation result.