🔐 Base64 Encoder & Decoder
Encode or decode Base64 strings instantly. Convert text to Base64 or decode Base64 back to readable text — directly in your browser, securely and privately.
The Base64 Encoder & Decoder tool allows you to quickly convert text, files, and binary data into Base64 format and decode it back to its original form. Designed for developers, students, and cybersecurity professionals, this tool ensures accurate, fast, and secure Base64 encoding and decoding for web, API, and software applications.
💡 What is Base64 Encoding?
Base64 encoding is a technique that converts binary data (such as images or files) into plain text using 64 different ASCII characters. This makes it possible to transmit data safely over systems that only support text formats — for example, embedding images in HTML or storing data in JSON.
⚙️ How to Use the Base64 Encoder & Decoder Tool
- Choose Encode to convert your text into Base64 format.
- Choose Decode to convert Base64 text back to normal text.
- Paste your input text, click Encode or Decode, and the result will appear instantly.
- Copy or clear your results easily using the provided buttons.
🔒 Is This Base64 Tool Secure?
Yes. All encoding and decoding are done directly in your browser using JavaScript. No text or data is sent to any external server — your information remains completely private and safe.
🌐 Common Uses of Base64
- Embedding small images directly in HTML or CSS files.
- Encoding credentials for HTTP basic authentication.
- Storing data in JSON or XML without corruption.
- Transferring binary files over email or APIs that only support text.
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❓ Frequently Asked Questions
Is Base64 encryption?
No, Base64 is not encryption. It’s a form of encoding used to represent binary data as text for easy transport or storage. Anyone can decode it back to its original form.
Can I decode any Base64 string here?
Yes, this tool supports any valid Base64 string and converts it instantly to plain text without external processing.
Does Base64 increase data size?
Yes, encoded Base64 data is approximately 33% larger than the original binary data.
📘 Learn More About Base64 Encoding
Base64 encoding is widely used in web development to safely transmit binary data as text. It is a part of modern web technologies, APIs, and cryptographic systems. You can learn more about Base64 standards and use cases from trusted sources below:
- 🔗 Read the official definition of Base64 in the IETF RFC 4648 standard.
- 📘 Explore how browsers use Base64 at MDN Web Docs – Base64.
- 🧠 Understand encoding basics from Wikipedia’s Base64 article.
These resources can help you understand how our Base64 Encoder & Decoder tool works and where Base64 is commonly used — such as in email attachments, data URIs, and web APIs.
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