Base64 Encoder API

Encode text to Base64 format instantly for secure data transmission, JWT tokens, and email processing. Simple API, instant results.

✓ Used for JWT token processing

✓ RFC 4648 compliant

✓ Web-safe encoding available

🚀 Start Encoding for Free

✓ 100 free encodings monthly ✓ No credit card ✓ Instant setup

How to Encode Text to Base64

Input: Plain Text

Hello, World!
This is a secret message.
Special chars: åäö @#$%

Any text, including unicode characters, special symbols, and multi-line content.

Output: Base64 Encoded

SGVsbG8sIFdvcmxkIQpUaGlzIGlzIGEgc2VjcmV0IG1lc3NhZ2UuClNwZWNpYWwgY2hhcnM6IMOlw6TDtiBAIyQl

Safe for transmission over HTTP, email systems, and URL parameters.

API Usage Examples

Basic Text Encoding

curl -X POST https://api.t3xtr.org/api/base64-encode \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: text/plain" \
  -d "Hello, World!"

# Response
SGVsbG8sIFdvcmxkIQ==

JWT Payload Encoding

curl -X POST https://api.t3xtr.org/api/base64-encode \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: text/plain" \
  -d '{"user_id": 12345, "exp": 1640995200}'

# Response for JWT payload
eyJ1c2VyX2lkIjogMTIzNDUsICJleHAiOiAxNjQwOTk1MjAwfQ==

Multi-line Content Encoding

curl -X POST https://api.t3xtr.org/api/base64-encode \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: text/plain" \
  -d "Line 1
Line 2
Line 3"

# Response
TGluZSAxCkxpbmUgMgpMaW5lIDM=

Common Base64 Encoding Use Cases

🔐 JWT Token Creation

Encode JWT headers and payloads for secure authentication tokens in web applications.

Perfect for: OAuth, API authentication, session management

📧 Email Attachments

Encode binary data and files for safe transmission through email systems.

Perfect for: MIME emails, automated reporting, file transmission

🌐 URL Parameters

Safely include complex data in URLs without breaking query string parsing.

Perfect for: Deep linking, state passing, API callbacks

💾 Data Storage

Store binary data in text-only databases and configuration files.

Perfect for: Config files, NoSQL databases, JSON APIs

🔗 API Integration

Encode sensitive data for secure transmission between microservices.

Perfect for: Webhooks, API keys, encrypted payloads

📱 Mobile Apps

Encode app data for secure local storage and cloud synchronization.

Perfect for: User preferences, cached data, offline storage

Programming Language Examples

JavaScript/Node.js

const response = await fetch('https://api.t3xtr.org/api/base64-encode', {
  method: 'POST',
  headers: {
    'X-API-Key': 'YOUR_API_KEY',
    'Content-Type': 'text/plain'
  },
  body: 'Hello, World!'
});
const encoded = await response.text();

Python

import requests

response = requests.post(
    'https://api.t3xtr.org/api/base64-encode',
    headers={'X-API-Key': 'YOUR_API_KEY'},
    data='Hello, World!'
)
encoded = response.text

PHP

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.t3xtr.org/api/base64-encode');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'Hello, World!');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'X-API-Key: YOUR_API_KEY'
]);
$encoded = curl_exec($ch);

Java

HttpRequest request = HttpRequest.newBuilder()
    .uri(URI.create("https://api.t3xtr.org/api/base64-encode"))
    .header("X-API-Key", "YOUR_API_KEY")
    .POST(HttpRequest.BodyPublishers.ofString("Hello, World!"))
    .build();
    
String encoded = client.send(request, 
    HttpResponse.BodyHandlers.ofString()).body();

Why Use T3XTR for Base64 Encoding?

🚀 Lightning Fast

Encode text in under 100ms. Perfect for real-time applications and high-frequency encoding operations.

📏 No Size Limits

Encode up to 10MB of text data per request. Handle large files, documents, and data payloads.

🔒 Secure Processing

Your data is processed securely and never stored. GDPR compliant with enterprise-grade security.

🌐 RFC Compliant

Follows RFC 4648 standards for Base64 encoding. Compatible with all systems and platforms.

💰 Cost Effective

Start free with 100 encodings monthly. Scale affordably with transparent pricing from $6/month.

🛠️ Developer Friendly

Simple REST API works with any programming language. Comprehensive documentation and examples.

Frequently Asked Questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII format. It's commonly used for data transmission and storage.

Is Base64 encoding secure?

Base64 is encoding, not encryption. It makes data safe for transmission but doesn't provide security. Use HTTPS for secure transmission.

Can I encode Unicode text?

Yes! T3XTR handles UTF-8 encoding automatically, so you can encode text in any language with special characters.

What's the size limit?

You can encode up to 10MB of text data per API request, suitable for most applications and large documents.

Ready to Start Base64 Encoding?

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