Base64 Image Encoder & Decoder
Transform image files to Base64 strings or parse Base64 codes back to visible images 100% offline.
Drag & Drop Image Here
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How Does Base64 Image Conversion Work?
Base64 is a binary-to-text encoding algorithm that represents binary data (such as image bytes) as a sequence of 64 standard ASCII characters. By prefixing the encoded string with mime parameters (e.g. data:image/png;base64,), you create a **Data URI** that web browsers can render natively just like a standard image URL.
Advantages and Limits
Embedding Base64 codes directly inside HTML or CSS files eliminates external HTTP request overhead, speeding up loading times for small icons and layouts. However, because Base64 encoding increases data payload sizes by approximately 33%, large photos should remain separate files to optimize browser caching.