Base64 Encoder/Decoder
Encode text or files to Base64, or decode Base64 back to text.
About Base64 Encoding
Encode text, files, or images to Base64 format for embedding in HTML, CSS, JSON, or email headers. Decode Base64 strings back to their original form instantly.
How It Works
- Enter text or upload a file
- Choose encode or decode mode
- Copy the result to clipboard
Key Features
- Encode and decode text instantly
- File and image Base64 encoding
- URL-safe encoding option
- Copy result with one click
Frequently Asked Questions
- What is Base64 encoding used for?
- Base64 is used to safely transmit binary data (like images or files) through systems designed for text. Common uses include embedding images directly in HTML or CSS, sending file attachments in emails, encoding authentication tokens, and storing binary data in JSON APIs.
- Is Base64 the same as encryption?
- No — Base64 is encoding, not encryption. Anyone can decode a Base64 string instantly without a key or password. Never use Base64 to protect sensitive information. For security, use proper encryption algorithms like AES. Base64 is only for safe text transmission of binary data.
- What is URL-safe Base64?
- Standard Base64 uses +, /, and = characters that have special meaning in URLs. URL-safe Base64 replaces + with -, / with _, and removes the = padding. Use URL-safe Base64 when embedding encoded data directly in a URL, query string, or filename.
- Can I encode images to Base64?
- Yes — image Base64 encoding lets you embed images directly into HTML or CSS without a separate image request. A common use is CSS background images or HTML img src attributes. The trade-off is that Base64 images are about 33% larger than the original binary file.