Do you upload my data to a server?

No. Everything happens in your browser. Your base64 string is never transmitted anywhere.

What image formats are supported?

PNG, JPEG, GIF, WebP, BMP, and SVG are all supported, as long as the browser can render them. The format is detected automatically from the data URI prefix.

Should I include the "data:image/..." prefix?

Both formats work. If you paste raw base64 without a prefix the tool assumes PNG. If you include the full data URI (data:image/jpeg;base64,...) the correct format is detected automatically.

My string is very long — will the tool handle it?

Yes. The conversion is done entirely in-browser with no size limit other than available RAM. Very large images (tens of megabytes) may take a moment to render.

Why does my image appear broken?

The base64 string may be truncated or contain non-base64 characters. Try removing whitespace, line breaks, or surrounding quotes and paste again.

Base64 To Image

Name: Base64 To Image
Availability: InStock
Author: Nham Vu

Paste a base64 string to instantly preview and download the decoded image in your browser.

Base64 Input

Paste a base64 string on the left and click Decode

Done!

Summary

Paste a base64 string to instantly preview and download the decoded image in your browser.

How it works

Paste your base64 string (with or without the data URI prefix) into the input area.
The tool automatically detects the MIME type from the prefix or defaults to PNG.
The decoded image is rendered instantly in the preview panel.
Review the image dimensions and file size displayed below the preview.
Click Download to save the image to your device.

Use cases

Preview base64-encoded images embedded in JSON API responses.
Inspect inline images stored in a database or configuration file.
Verify that an image was correctly encoded to base64 before sending it.
Extract and save embedded images from email or HTML source code.
Debug broken <img src="data:..."> tags by pasting the base64 payload.
Convert a base64 string from a backend response into a downloadable file.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu