Base64 to Image Converter
Paste a Base64 string or full data URI to preview the image instantly and download it as a PNG, JPG, GIF, WebP or SVG file.
100% client-side. Nothing is uploaded — decoding happens in your browser.
Base64 to image, explained
A Base64 image string is just text that encodes an image's binary data. This decoder reverses the process: paste the string and the browser reconstructs the original picture, which you can preview and save back to a real file. The decoder identifies PNG, JPG, GIF, WebP and SVG from the decoded bytes, so it also works when a raw Base64 value has no MIME type. It's the counterpart to the image to Base64 encoder.
What you can paste
- A full data URI —
data:image/png;base64,iVBOR.... This is the most reliable form because it names the exact format. - A bare Base64 body — just the long string with no
data:header. The decoder detects the format from its file signature.
How format detection works
PNG, JPG, GIF and WebP files begin with recognizable binary signatures. SVG is detected from its XML or
<svg> markup. If the bytes do not match a supported image, the tool shows an error instead
of downloading a file with a guessed extension.
Example Base64 image
A complete value starts like data:image/png;base64,iVBORw0KGgo.... You may paste that entire
data URI or only the part after the comma. Spaces and line breaks are ignored, and URL-safe Base64 is accepted.
Common uses
- Inspect a data URI you found in CSS, HTML or an API response.
- Recover an image that was stored as a Base64 string in a database or config file.
- Sanity-check the output of an encoder before shipping it.
Private by design
Decoding uses the browser's native image handling — the string is turned into an image element locally and never sent anywhere. Safe for confidential assets.
More Base64 converters
Frequently asked questions
How do I convert a Base64 string back to an image?
Paste the Base64 string or full data URI into the box and click Decode to image. The tool detects PNG, JPG, GIF, WebP or SVG, renders a preview, and downloads the original image bytes with the matching extension.
Do I need the data:image prefix?
No. A full data URI like data:image/png;base64,iVBOR... includes a format label, but a raw Base64 body also works because the decoder checks the decoded file signature.
Is the decoder private?
Yes. Decoding happens entirely in your browser. Nothing is uploaded, so your data stays on your device.