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Base64 to Image Converter

Paste a Base64 string or data URI and instantly preview and download the decoded image. Detects PNG, JPG, GIF, WebP and SVG — 100% in your browser.

About the Base64 to Image Converter

The Base64 to Image Converter decodes any Base64 string back into a viewable, downloadable image. Paste the raw Base64 or a full data URI (data:image/png;base64,…) and the preview appears instantly — no upload, no server, everything decoded in your browser.

The tool identifies the image format automatically by reading the file's magic bytes, so even if the data URI prefix is missing or wrong it still detects PNG, JPG, GIF, WebP, BMP, ICO and SVG correctly and downloads with the right file extension.

It's the quickest way to inspect images embedded in CSS, JSON API responses, HTML emails or database dumps — and if the string is corrupted, you get a clear error explaining what's wrong instead of a broken image.

How to Use the Base64 to Image Converter

  1. 1Paste your Base64 string or full data URI into the box.
  2. 2The image preview appears instantly with the detected format and size.
  3. 3Click 'Download image' to save it with the correct extension.

Frequently Asked Questions

How do I convert a Base64 string to an image?

Paste the string into the tool — it decodes in your browser and shows the image immediately. Both raw Base64 and full data URIs work; the tool strips the prefix automatically.

Why does my Base64 string fail to decode?

Usually the string was truncated when copying, or line breaks/quotes got mixed in. Base64 length is always a multiple of 4 (padding with =). The tool ignores whitespace, so try re-copying the complete string.

How does it know if my Base64 is a PNG or JPG?

It reads the decoded file's first bytes: PNG starts with 89 50 4E 47, JPG with FF D8 FF, GIF with 'GIF8'. That signature is more reliable than the data URI label, which can be wrong.

Is it safe to paste sensitive images here?

Yes — decoding happens entirely in your browser with JavaScript. The Base64 text and the image never leave your device.

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