Base64 to Image Decoder Online

Paste any Base64 string or Data URI to instantly decode and view your image. Inspect dimensions, file size, and download as PNG, JPG, or WebP.

Paste Base64 or Data URI String:

Supports Data URIs and Raw Base64 stringsCharacters: 0

Frequently Paired Tools:

Image to Base64 →Image Color Picker →Image Metadata Viewer →

100% PrivateProcessed locally in browser

Auto Format DetectIdentifies PNG, JPG, WebP, SVG

Direct DownloadSave image with custom name

Related Developer Tools

Image Color Picker Compress Image JPG to PNG PNG to JPG Image to Base64 Image Metadata Viewer

Frequently Asked Questions

How do I decode a Base64 string into an image file?

Simply paste your Base64 text string or Data URI (e.g. data:image/png;base64,...) into the text box. SizeSnap instantly decodes the byte stream, detects the image format, renders an interactive preview, and lets you download the file with one click.

Can I decode raw Base64 strings without the data:image prefix?

Yes. SizeSnap intelligently inspects the magic byte headers of the raw string (such as /9j/ for JPEG, iVBOR for PNG, and R0lGOD for GIF) to reconstruct the correct image type automatically.

Which image formats are supported for decoding?

SizeSnap supports PNG, JPEG/JPG, WebP, SVG, and GIF Base64 strings.

Is any of my Base64 data uploaded to a server?

No. The entire decoding process takes place client-side within your browser sandbox. Your data remains strictly on your device.