Base64 to Image File

Convert Base64 data URL strings back into downloadable PNG or JPG image files.

How to Use

Paste Base64

Paste data:image/png;base64,... text string.

In-browser Decode

Parse data URL header and render image preview on Canvas.

Download Image

Save binary image file directly to your local storage.

Decode Base64 Data URL Strings to Image Files

Need to extract an image from a Base64 string received in an API response, CSS file, or database export? Our Base64 to Image Decoder parses data URIs (data:image/png;base64,...) and renders downloadable binary PNG, JPG, or WebP image files.

Decode Base64 strings 100% privately inside your web browser tab without sending sensitive data strings to remote servers.

Real-World Examples & Use Cases

Developer API & Database Debugging

Decode Base64 image payloads returned from REST APIs, GraphQL queries, or database blobs into viewable image files.

CSS & HTML Embedded Asset Extraction

Extract inline Base64 background images from CSS stylesheets or single-file HTML documents.

Canvas & QR Code Export Verification

Convert Base64 strings generated by JavaScript canvas drawings or QR code libraries into PNG images.

Confidential Payload Privacy

Decode confidential Base64 strings with 100% offline browser security.

How It Works

Base64 Data URI Decoding Engine: 1. Header Parsing: Match mime-type prefix via Regex: data:(image\/[a-zA-Z+]+);base64,(.*). 2. Binary Blob Fetch: Convert Base64 ASCII string to ArrayBuffer via atob() and Uint8Array. 3. Object URL Creation: URL.createObjectURL(blob) generates temporary Blob URL for rendering and direct file download.

Frequently Asked Questions

Does the tool automatically detect data URL prefixes?▼

Yes! It automatically detects data:image/png;base64, data:image/jpeg;base64, data:image/webp;base64, and raw Base64 strings.

Are my Base64 strings uploaded to a server?▼

No. Decoding is performed 100% locally inside your web browser tab.

What output image formats are supported?▼

You can export decoded images as PNG, JPG, or WebP files.

Can I decode large Base64 strings?▼

Yes! Decoding handles large Base64 text strings directly in browser memory.

Is this tool free?▼

Yes! 100% free with zero watermarks.

Related Tools

Explore other tools in this category.

JPG to PNG Converter

Convert JPEG images to PNG format directly in your browser without uploading to a server.

PNG to JPG Converter

Quickly flatten PNG images with transparency into standard JPG files.

Image Resizer

Change the pixel dimensions of any image rapidly in your browser.

Image Compressor

Dramatically reduce image file sizes without noticeable quality loss.

Image to Base64

Extract the raw Base64 Data URL string directly from an image file for inline HTML usage.

PNG to WebP Converter

Convert PNG images to modern, lightweight WebP format with transparency support.