Paste Base64, see your image instantly — no upload needed
The Base64 to Image Decoder lets you instantly convert any Base64-encoded string or data URL into a viewable image — right in your browser. Paste a raw Base64 block or a full data:image/… URL, click Decode, and see your PNG, JPEG, GIF, WebP, or BMP rendered with its dimensions and file size. No file uploads, no servers, completely private.
A Base64 image is a binary image file encoded as a string of ASCII characters using Base64 encoding. It is commonly embedded directly in HTML, CSS, JSON APIs, or email attachments using the format data:image/png;base64,… to avoid a separate HTTP request.
Yes. The tool automatically detects whether you pasted a full data URL or a raw Base64 string. For raw strings it reads the file's magic bytes to determine whether it is a PNG, JPEG, GIF, WebP, or BMP.
No. Everything runs entirely in your browser using the native atob() API and an HTML Image element. Your Base64 data never leaves your device.
This usually means the Base64 string is incomplete, corrupted, or does not represent an image. Make sure you copied the entire string and that it encodes a supported image format such as PNG, JPEG, GIF, WebP, or BMP.