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Cifrivo
Developer

Convert Base64 to an image

Validate raw Base64 or a Data URI, detect the actual image type, preview it safely and download the reconstructed file.

Processed locallyYour files never leave your device.

Everything is processed locally in your browser.

How it works

  1. Paste raw Base64 or a complete image Data URI.
  2. Press Convert.
  3. Check the detected format and preview.
  4. Download the reconstructed image.

Practical example

A value starting iVBORw0KGgo... is detected from its binary signature as PNG and can be downloaded with the correct extension.

Formula and explanation

Cifrivo reconstructs bytes from Base64 and examines signatures for PNG, JPEG, WebP, GIF and SVG. If a Data URI declares a different type from its actual signature, the tool reports the mismatch.

This validation prevents a misleading filename, but it is not a malware scanner. Only open or share content you trust. SVG is displayed as an image rather than inserted as page markup.

The preview uses a temporary local object URL and the download is generated on this device. The pasted data is neither uploaded nor recorded in Analytics.

Frequently asked questions

Do I need the data:image prefix?

No. Raw Base64 and complete Data URIs are both accepted.

Which image types are detected?

PNG, JPEG, WebP, GIF and SVG are supported through their byte signature or markup.

Why does the declared type mismatch?

The Data URI label may be wrong. Cifrivo compares it with the actual decoded bytes to avoid a misleading download.

Developer

Image to Base64

Turn JPG, PNG, WebP or SVG images into raw Base64 or a ready-to-use Data URI.

Developer

Base64 decode

Decode valid Base64 into readable Unicode text with strict error detection and no upload.

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Base64 encode

Encode Unicode text as Base64 instantly, then copy or download the result locally.