Base64 file converter

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used when binary data needs to be stored or transferred in environments that only support text, such as embedding image data in HTML, CSS, or JSON.

Base64 encoding is useful when you need to embed binary data (like images, audio, or documents) directly into text-based formats such as HTML, CSS, or JSON. Common use cases include embedding small images directly in a webpage without additional HTTP requests, storing binary data in databases, or sending files via APIs that only accept text.

Yes, Base64 encoding increases the file size by approximately 33% compared to the original binary data. This is because it represents 3 bytes of binary data with 4 ASCII characters. This overhead is one reason why Base64 encoding is best used for smaller files.

This tool processes files locally in your browser, so the practical file size limit depends on your device's memory. For large files (over 10MB), you might experience slower performance. Most modern browsers can handle files up to 50MB-100MB, but for optimal performance, we recommend files under 10MB.

Yes, all processing happens entirely in your browser. Your files and data never leave your device and aren't sent to any server. The conversion process is completely offline once the page has loaded.