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Base64 to Image Converter

Validate, preview, and download Base64 image data. Free, no account - and your file never leaves this browser tab.

Decoded locally in this browser. Nothing is sent to GenClean.

How it works

Base64 to Image in 4 steps

  1. Paste a complete data URL or raw Base64 image string.

  2. Click Decode image to validate and reconstruct the binary file.

  3. Check the preview, detected format, dimensions, and size.

  4. Download the decoded image to your device.

When to use it

Turn a Base64 string or complete image data URL back into a viewable, downloadable file. The tool validates the text, detects common image formats from their byte signatures, and shows dimensions and file size before download.

  • Recover an image embedded in JSON, HTML, or CSS.
  • Inspect a Base64 API response without sending it to another service.
  • Validate whether encoded image data is complete and renderable.

Format & quality notes

  • Complete data URLs provide the most reliable MIME type; raw strings are identified from common PNG, JPG, WebP, and GIF signatures.
  • Whitespace is removed before decoding, so wrapped Base64 remains valid.
  • The pasted value stays inside the browser and is never transmitted.
FAQ

Questions about the Base64 to Image Converter.

Can I paste raw Base64 without the data URL prefix?

Yes. The tool recognizes common image signatures and supplies the corresponding MIME type for preview and download.

Why will my Base64 image not decode?

The value may be truncated, contain non-Base64 characters, or represent data other than an image. Paste the complete string and include the data URL prefix when available.

Can I preview Base64 before downloading it?

Yes. A successful decode shows the image, dimensions, detected MIME type, and decoded byte size.

Is pasted Base64 sent anywhere?

No. Decoding uses built-in browser APIs and stays on your device.

Give feedback

Goes straight to the team - no account needed.