Base64 to Image Converter

Decode Base64 encoded strings back to images. Paste your Base64 data and download the original image in JPG, PNG, GIF, or WebP format.

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Accepts both pure Base64 strings and Data URI format (data:image/...;base64,...)

💡 How to Use:

  1. Paste your Base64 encoded image string in the text area above
  2. The decoder accepts both pure Base64 and Data URI formats
  3. Click "Decode to Image" to convert the Base64 string back to an image
  4. Preview the decoded image and check its properties
  5. Download the image to your device or copy it to clipboard

About Base64 to Image Decoder

Our free online Base64 to image converter makes it easy to decode Base64 encoded image data back to its original image format. Whether you're working with embedded images from HTML/CSS, JSON data, or API responses, this tool provides instant decoding and download capabilities.

Key Features

  • Multiple Format Support: Automatically detects and decodes JPG, PNG, GIF, WebP, and SVG formats
  • Flexible Input: Accepts both pure Base64 strings and Data URI format
  • Instant Preview: See the decoded image immediately in your browser
  • Image Information: View dimensions, file size, and format details
  • Easy Download: Download the decoded image with one click
  • Clipboard Copy: Copy the image directly to clipboard for quick pasting
  • Client-Side Processing: All decoding happens in your browser for privacy

How to Decode Base64 Images

  1. Get Your Base64 String: Copy the Base64 encoded image data from your source
  2. Paste the Data: Paste it into the text area (works with or without "data:image/..." prefix)
  3. Decode: Click the "Decode to Image" button
  4. Review: Check the preview and image information
  5. Download: Save the image to your device or copy to clipboard

Common Use Cases

  • API Responses: Extract images from JSON API responses that return Base64 data
  • Email Images: Decode images embedded in HTML emails
  • Web Scraping: Extract Base64 images from web pages or CSS files
  • Data Recovery: Recover images from database fields storing Base64 data
  • Development: Test and verify Base64 encoded images during development
  • File Conversion: Convert Base64 strings back to downloadable image files

Understanding Base64 Image Encoding

Base64 encoding converts binary image data into ASCII text format using 64 characters (A-Z, a-z, 0-9, +, /). This allows images to be transmitted as text in contexts that don't support binary data, such as JSON, XML, or embedded in HTML/CSS.

Data URI format combines the Base64 data with metadata like data:image/png;base64,iVBORw0KGgo... which includes the MIME type, making it directly usable in HTML img tags or CSS background-image properties.

Our decoder automatically detects both formats and extracts the image data correctly, so you don't need to worry about formatting.

Supported Image Formats

  • PNG: Lossless compression with transparency support
  • JPEG/JPG: Compressed format ideal for photographs
  • GIF: Supports animation and transparency
  • WebP: Modern format with superior compression
  • SVG: Scalable vector graphics format
  • BMP: Uncompressed bitmap format

Tips for Using This Tool

  • You can paste the entire Data URI including the "data:image/..." prefix - the tool will extract the Base64 part automatically
  • The tool works with very large images, but decoding may take a moment for multi-megabyte files
  • Use "Copy Image" to quickly paste the decoded image into image editing software
  • The downloaded file will use the correct extension based on the detected image format
  • All processing is done locally - your image data never leaves your browser

Privacy and Security

All Base64 decoding is performed entirely in your web browser using JavaScript. No image data is uploaded to any server, ensuring your images remain completely private and secure. This tool works offline once the page is loaded.

Troubleshooting

  • Invalid Base64: Make sure you've copied the complete Base64 string without truncation
  • Image Not Showing: Verify the Base64 string is actually image data, not other encoded content
  • Wrong Format: Some Base64 strings may have line breaks - these are automatically handled by the tool
  • Corrupted Output: Ensure no characters were lost when copying the Base64 string