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Base64 to Image Converter

Convert a Base64 string back to an image online. Paste a data URL or raw Base64, preview instantly and download as PNG, JPG or the original format.

What is the Base64 to Image Converter?

The Base64 to Image Converter decodes a Base64 string — either a full data URL or raw Base64 text — back into a viewable, downloadable image.

  • Accepts full data URLs or raw Base64 text
  • Automatic image format detection (PNG, JPG, WebP, GIF, SVG…)
  • Live preview with decoded file size
  • Clear error messages for invalid or truncated Base64
  • One-click download with the correct file extension
  • 100% local decoding — nothing is uploaded

How to use the Base64 to Image Converter

  1. 1

    Paste your Base64 string — with or without the data:image/...;base64, prefix.

  2. 2

    The image preview appears instantly along with its decoded size.

  3. 3

    Fix any reported errors if the string is truncated or contains invalid characters.

  4. 4

    Click Download to save the image file to your device.

About the Base64 to Image Converter

The Base64 to Image Converter decodes a Base64 string — either a full data URL or raw Base64 text — back into a viewable, downloadable image. Paste the string, see the picture instantly, and save it as a normal file.

It's the fastest way to inspect images buried in API responses, JSON payloads, HTML emails, database fields or CSS files. The MIME type is detected automatically from the data URL header; raw strings default to PNG. Invalid input produces a clear error message rather than a broken image.

Decoding happens entirely in your browser. The string is never sent to a server, so payloads containing private screenshots, documents or user content stay on your machine.

Frequently asked questions

How do I convert Base64 to an image?

Paste the Base64 string into the input box — the image preview renders immediately. Then click Download to save it as a regular image file. Both full data URLs and bare Base64 strings work.

Why is my Base64 string not converting?

The most common causes are a truncated string (copied only partially), stray line breaks or spaces inside it, or URL-encoded characters. This tool strips whitespace automatically and shows a clear error if the remaining data isn't valid Base64.

How do I know what format the image is?

If the string starts with data:image/jpeg;base64, the format is declared right in the header, and the tool uses it. For raw Base64 without a header, the tool decodes it and defaults to PNG, which browsers display safely for most content.

Is there a size limit for the Base64 string?

Browsers comfortably handle strings tens of megabytes long, which covers virtually all embedded images. Extremely large strings may take a moment to decode, but everything still happens locally on your device.

Is pasting sensitive Base64 data here safe?

Yes. Decoding runs entirely in your browser with JavaScript — the string is never transmitted, stored or logged. It's safe for internal API payloads and private images.

Guides for Base64 to Image Converter

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