Common Base64 Formats

Data URI Format

Complete data URI with MIME type and Base64 data

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNkYPhfDwAChwGA60e6kgAAAABJRU5ErkJggg==

HTML Image Tag

Complete HTML img tag with Base64 source

CSS Background

CSS background-image property with Base64

.background { background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjQiIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KPHBhdGggZD0iTTEyIDJMMTUuMDkgOC4yNkwyMiA5LjI3TDE3IDE0LjE0TDE4LjE4IDIxLjAyTDEyIDE3Ljc3TDUuODIgMjEuMDJMNyAxNC4xNEwyIDkuMjdMOC45MSA4LjI2TDEyIDJaIiBmaWxsPSIjMDAwIi8+Cjwvc3ZnPgo='); }

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Smart Detection

Automatically detects and extracts Base64 from various formats

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Instant Decoding

Convert Base64 to images in real-time with no server processing

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Complete Privacy

Your data never leaves your browser - processed locally only

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Multiple Formats

Download decoded images as PNG, JPEG, WebP, or original format

About Base64 Image Decoding

Base64 encoding converts binary image data into ASCII text format, allowing images to be embedded directly in text-based files like HTML, CSS, and JavaScript. Our decoder reverses this process, converting Base64 strings back to their original image format.

How Base64 Decoding Works

Input Recognition: The tool detects Base64 data within various formats (data URIs, HTML, CSS)
Data Extraction: Pure Base64 data is extracted from the input string
Decoding: Base64 text is converted back to binary image data
Rendering: The binary data is rendered as a viewable image
Export: The image can be downloaded in various formats

Supported Input Formats

Pure Base64: Raw Base64 encoded strings
Data URIs: Complete data:image/type;base64,encoded-data URLs
HTML Code: <img> tags and other HTML containing Base64 images
CSS Code: background-image properties and other CSS with Base64 URLs
JavaScript: Code containing Base64 image data

Common Use Cases

Debugging: Extract and view Base64 images from web code
Content Recovery: Retrieve original images from Base64 encoded data
Code Analysis: Inspect embedded images in HTML/CSS/JS files
Format Conversion: Convert Base64 images to standard file formats
Education: Learn how Base64 encoding/decoding works

Frequently Asked Questions

What types of Base64 inputs can this tool handle?

Our tool can handle pure Base64 strings, data URIs, and can automatically extract Base64 images from HTML, CSS, and JavaScript code.

Why can't I decode my Base64 string?

Common issues include: invalid Base64 characters, corrupted data, incorrect MIME type, or the string not actually containing image data. Ensure your input is a valid Base64 encoded image.

Can I decode multiple images at once?

Currently, our tool processes one Base64 string at a time. For multiple images, you'll need to decode them separately.

Is there a size limit for Base64 decoding?

Our tool can handle Base64 strings of reasonable length. Very large images (over 10MB when decoded) may cause performance issues in some browsers.

What image formats are supported?

We support all common image formats including PNG, JPEG, GIF, WebP, SVG, and BMP. The format is automatically detected from the Base64 data.

Performance Tips

For large images, consider using the download feature rather than displaying in browser
Clean your input by removing any non-Base64 text before decoding
Use the example formats to ensure your input is structured correctly
If decoding fails, try extracting just the Base64 portion from data URIs