Base64 to Image Converter

Base64 to image decoding is the process of converting a Base64-encoded ASCII text string back into its original binary representation (raw pixels and headers) of an image file. Once decoded, the browser is able to render the visual graphic and export it as a standard file like PNG, JPG, or WebP.

The decoder scans the very first few characters of the Base64 string. By decoding this small prefix into binary bytes, it analyzes the 'magic bytes' or file signatures (headers) unique to each format. For example, a PNG file always starts with specific signature bytes that correspond to 'iVBOR' in Base64, while a JPEG begins with '/9j/'.

Raw Base64 is purely the binary image data converted into letters and numbers (e.g. 'iVBORw0KGgo...'). A Data URI is a complete resource identifier that includes the MIME type metadata header and encoding specifier prefix (e.g. 'data:image/png;base64,iVBORw0KGgo...'). Data URIs can be inserted directly into HTML or CSS properties, while raw Base64 requires context headers to load.

No. ToolZeno prioritizes user privacy. All decoding, processing, file creation, and previews happen 100% client-side inside your own browser window. We do not upload your text payloads, and we never transmit your decoded files to any server. Your sensitive developer data remains entirely private on your local machine.

Unlike raster formats (like PNG or JPG) that have fixed grids of pixels, SVG (Scalable Vector Graphics) is an XML-based vector format. If the source SVG file doesn't define explicit width and height attributes in its code, but relies on a viewBox attribute instead, the browser renders it dynamically based on the space provided, meaning fixed pixel dimensions are not defined.