Base64 to PNG Converter
Paste a Base64 string or full data URI to preview the image instantly and download it as a PNG file, with transparency preserved.
100% client-side. Nothing is uploaded — decoding happens in your browser.
Base64 to PNG, explained
A Base64 image string is just text that encodes an image's binary data. This decoder reverses the process for the PNG format: paste the string, preview the picture, and save it back as a .png file. PNG is a lossless format that keeps every pixel exact and supports transparent backgrounds — ideal when you need a crisp logo, icon, or screenshot.
When to choose PNG
- Transparency matters. PNG keeps an alpha channel, so logos and icons stay clean on any background.
- You need pixel-perfect output. PNG is lossless — no compression artifacts, unlike JPG.
- UI, charts, or line art. Sharp edges and text stay sharp at any size.
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 assumes PNG, which works for the majority of strings.
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 to a PNG?
Paste the Base64 string or full data URI into the box and click Decode to PNG. The image renders instantly and you can download it as a .png file. A bare Base64 body with no data: prefix is assumed to be PNG.
Does this decoder keep transparency?
Yes. PNG supports an alpha channel, so transparent areas in the original image are preserved in the downloaded .png file.
Is the decoder private?
Yes. Decoding happens entirely in your browser. Nothing is uploaded, so your data stays on your device.