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About Base64 Image Encoding
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters. It is commonly used to embed images directly in HTML, CSS, or JSON without separate file requests.
When to Use It
Base64 encoding is ideal for small images like icons and logos (under 10KB). For larger images, separate files are more efficient since Base64 increases size by approximately 33%.
Data URI Format
A data URI includes the MIME type prefix: data:image/png;base64,.... This tells the browser how to interpret the encoded data.
Size Considerations
Base64 encoding increases file size by about 33%. A 10KB image becomes roughly 13.3KB as Base64. Factor this into performance decisions, especially for mobile users.