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Decode Base64 to Image Decode Base64 strings or data URIs back into viewable, downloadable images.

Base64 to Image illustration
🖼️

Base64 to Image

Decode Base64 strings or data URIs back into viewable, downloadable images.

1

Paste Base64

Paste a Base64-encoded image string or complete data URI into the input area.

2

Decode

Click Decode Image to render the Base64 data as a visible image.

3

Download

Preview the decoded image and click Download to save it as a file.

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What Is Base64 to Image?

A Base64 to image decoder converts Base64-encoded text strings back into viewable images. If you have received image data as a Base64 string from an API response, source code, email template, or database, this tool renders it visually and lets you download it as a regular image file. It accepts both complete data URIs and raw Base64 strings. For raw Base64, it automatically adds the PNG data URI prefix.

Why Use Base64 to Image?

  • Accepts both data URIs and raw Base64 strings
  • Instant visual rendering of encoded image data
  • One-click download as a regular image file
  • Validates Base64 input and shows clear error messages

Common Use Cases

API Response Inspection

Visualize Base64-encoded images returned from REST APIs for debugging.

Email Template Debugging

View embedded Base64 images from HTML email source code.

Database Image Recovery

Convert Base64 image blobs stored in databases back into viewable files.

Code Inspection

View inline Base64 images found in source code, CSS, or config files.

Technical Guide

The decoder handles two input formats: data URIs and raw Base64 strings. For data URIs, the string is used directly as an img src attribute. For raw Base64 strings, the tool validates the encoding by attempting to decode a sample with atob(), then prepends the data:image/png;base64, prefix. The img element onload event confirms successful rendering, while onerror indicates corrupted data.

Tips & Best Practices

  • 1
    You can paste either a full data URI or just the raw Base64 string
  • 2
    If the image appears corrupted, check that the Base64 string is complete
  • 3
    Common data URI prefixes: data:image/png;base64, data:image/jpeg;base64,
  • 4
    For encoding images to Base64, use our Image to Base64 tool

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Frequently Asked Questions

Q Do I need to include the data: prefix?
No, you can paste either the full data URI or just the raw Base64 string.
Q What if the image does not render?
The Base64 string may be truncated or corrupted. Ensure you copied the complete string.
Q What format is the downloaded image?
The download format matches the data URI MIME type. Raw Base64 defaults to PNG.
Q Is there a size limit for Base64 input?
Very large Base64 strings (>10MB) may cause browser slowness, but there is no hard limit.
Q Can I decode animated GIF Base64?
Yes, if the Base64 encodes an animated GIF, the animation will be preserved.

About This Tool

Base64 to Image is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.