📖 How to Use
Using Base64 Encoder is simple:
- Step 1: Enter or paste the content you want to process
- Step 2: Configure options if available
- Step 3: Click the process button to see instant results
- Step 4: Copy or download your output
All processing is done locally in your browser — no data is uploaded to any server.
❓ Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable characters (A-Z, a-z, 0-9, +, /). It's commonly used for transmitting binary data over text-based protocols, such as email attachments (MIME), images in web pages (Data URLs), and binary fields in JSON. Base64 encoding increases data size by approximately 33%.
What's the difference between Base64 and Base64URL?
Standard Base64 uses + and / characters, while Base64URL uses - and _ (URL-safe variant). Base64URL also omits trailing = padding, making the output safe for URL parameters without additional escaping. This tool supports both formats.
Can Chinese text be Base64 encoded?
Yes. Base64 encodes byte data. Chinese text (UTF-8 encoded) is converted to multi-byte binary data and then encoded to Base64. This tool uses UTF-8 encoding by default, supporting Chinese and other Unicode text perfectly.
Is Base64 encoding secure?
Base64 is NOT encryption. It's just an encoding scheme with no security guarantees. Anyone can decode Base64 data. For security, use AES, RSA or other encryption algorithms. Base64 is only for data format conversion and transmission compatibility.
How to encode a file to Base64?
You can upload any file (images, documents, archives, etc.) and the tool will read its binary data and encode it to a Base64 string. This is particularly useful for embedding resources in web pages, such as converting images to Data URLs.