Base64 to Image Decoder And Previewer

Yes. All decoding happens 100% client-side in your browser. Your Base64 strings never leave your device.

Absolutely. This tool is completely free with unlimited conversions and no restrictions.

Yes, once the page loads, you can decode Base64 images entirely offline without an internet connection.

Absolutely not. This decode operation is executed 100% locally within your own browser. We never log or upload any part of your data, guaranteeing complete confidentiality.

This happens when the string you pasted is corrupted, missing characters, or is not actually representing an image format (e.g., if you pasted a Base64 encoded PDF or text document by mistake).

It is recommended, but not strictly required. If your string lacks a header (like data:image/jpeg;base64,), our tool will attempt to automatically append a PNG header to force the browser to render it.

All standard formats including PNG, JPG/JPEG, GIF, WEBP, SVG, and BMP encoded as Base64 strings.

After decoding, click the “Download Image” button to save the image file directly to your device.

Yes, the tool displays the width and height in pixels in the result metadata section after successful decoding.

No problem. The tool handles large Base64 strings, though very large images (10MB+) may take a moment to decode depending on your device.