Base64 to Image Converter Online – Decode Base64 String to Image Instantly Free

100% Client-Side • No Upload

Base64 to Image Converter

Advanced client-side decoding tool. Paste any Base64 string and instantly preview, copy, or download the image — all processed locally in your browser.

PNG JPG WEBP GIF

Instant

Decode in seconds

Secure

No data leaves browser

Multi

PNG, JPG, WEBP, GIF

Download

One-click save

Paste Base64 String

Enter Base64 encoded string (with or without data:image prefix)

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Initializing...

0%

Image generated successfully!

Image Preview

Image will appear here

How To Convert Base64 to Image

1

Paste Your Base64 String

Copy the Base64 encoded string and paste it into the input area. Works with or without the data:image/...;base64, prefix.

2

Click Decode Button

Press "Decode to Image". The tool validates your input and detects the image format automatically.

3

Wait for Processing

A progress bar shows decoding stages — validation, decoding, image generation, and finalization.

4

Preview the Image

The decoded image appears with format, dimensions, and file size information displayed below.

5

Download the Image

Click "Download Image" to save it. You can also copy the Data URL or open it in a new tab.

Frequently Asked Questions

A Base64 to Image Converter decodes Base64 encoded strings back into viewable image files. Base64 is a binary-to-text encoding scheme commonly used to embed images directly in HTML, CSS, or JSON. This tool reverses that encoding so you can preview, download, and use the image in its original format.

Absolutely. All decoding happens entirely in your browser using JavaScript. No data is uploaded to any server, stored anywhere, or transmitted over the network. Your Base64 strings and decoded images never leave your device.

No, it is optional. The tool accepts both formats:

With prefix: data:image/png;base64,iVBORw0KGgo...
Without prefix: iVBORw0KGgoAAAANSUhEUg...

If no prefix is provided, the tool auto-detects the image type from the binary header signature (magic bytes).

This tool supports Base64 strings up to approximately 10 MB in size (decoding to roughly 7.5 MB of binary data). This covers most common use cases including web-embedded images, thumbnails, and medium-resolution photos.

The tool supports the most common web image formats: PNG (including transparent), JPEG/JPG, WebP, and GIF (including animated). The format is auto-detected from the Data URI prefix or the file magic bytes if no prefix is present.

Yes! Once the image is decoded, a "Download Image" button becomes available. The file is saved with the correct extension (.png, .jpg, .webp, or .gif) based on the detected format. You can also copy the full Data URL to your clipboard or open the image directly in a new browser tab.

This error means the input does not match a valid Base64 pattern. Common causes include: accidentally including extra text, copying incomplete strings, using URL-encoded characters, or pasting something that is not Base64. Make sure you have copied the entire Base64 string from start to end.

A blank preview usually means the Base64 string is valid syntax but does not contain actual image data. This can happen if the string was corrupted, truncated, or was never an image to begin with. Try verifying the source of your Base64 string.

Privacy Notice

All Base64 decoding is performed entirely in your browser using JavaScript. No data is uploaded, transmitted, or stored on any server. Your encoded strings and decoded images remain completely private on your device at all times.

Convert Base64 to images instantly — secure, fast, and 100% client-side.

Base64 to Image Converter • Free Online Tool