Private Base64 decoder

Base64 to Image Converter

Paste an image Data URL or raw Base64 to preview and download the decoded image.

Your Base64 stays on your device. Decoding happens entirely in your browser.

Paste Base64 image data

Spaces, tabs, and line breaks in the Base64 payload are accepted. Maximum decoded size: 50 MB.
Choose the type only when you know the raw Base64 image format.

Decoded image

Preview of decoded image
Format
MIME type
Dimensions
Decoded size

Decode Base64 image data

A Data URL includes an image MIME type before its encoded payload. For raw Base64, this tool examines binary signatures for PNG, JPEG, GIF, WebP, BMP, and AVIF; if no reliable signature is found, you must choose the known type.

The decoded bytes become a Blob URL for safe preview and download. Pasted content is never inserted as HTML, and SVG decoding is intentionally excluded.

Frequently Asked Questions

Paste the Data URL or raw Base64, choose a type only if necessary, and select Convert to Image.

Yes. Supported image Data URLs are detected automatically.

It compares the Data URL type, when present, with common binary image signatures.

No. Decoding and download preparation happen locally in your browser.

It may be incomplete, malformed, mislabeled, unsupported, too large, corrupt, or valid Base64 that does not contain an image.

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