Click or drag an image here
Supports PNG, JPG, GIF, SVG, WebP
Free online Base64 encoder/decoder. Encode text to Base64, decode Base64 to text, convert images to Base64, and vice versa. Supports drag-and-drop file upload. Ideal for developers working on debugging, coding, and data processing. It is completely free, requires no registration, and all processing happens locally in your browser — your data never leaves your device.
Base64 is an encoding method that converts binary data into 64 printable ASCII characters. It is commonly used to transmit binary data over text-based protocols, such as email attachments and inline images in HTML/CSS.
Yes. Base64-encoded data is approximately 33% larger than the original. This is because every 3 bytes of input are encoded as 4 bytes of Base64 characters.
Yes. This tool first converts text to UTF-8 encoding using encodeURIComponent, then applies Base64 encoding. This ensures that all Unicode characters, including Chinese, are correctly handled.