How is a JPEG image converted to PNG?

The conversion runs on PicPerf's image processing service: your JPEG is decoded and re-encoded as a lossless PNG. The file is processed for the conversion only and never stored.

Yes. PNG uses lossless compression, so converting a JPEG to PNG never adds compression artifacts — the image looks exactly like the JPEG you started with, just without any further degradation. Keep in mind that artifacts already baked into the original JPEG can't be removed by a format change.

Why is the PNG file so much bigger than the JPEG?

Lossless formats don't discard detail the way JPEG does, so a PNG of a photo is commonly two to ten times larger than the equivalent JPEG. That's the trade-off for zero quality loss — which is why PNG is best for editing, archiving, and graphics rather than final delivery of photos.

Does converting JPEG to PNG add transparency?

No. A JPEG has no alpha channel, so the resulting PNG is fully opaque. PNG supports transparency, but there's nothing transparent in the source image to preserve.

When should I convert JPEG to PNG?

When you plan to edit the image repeatedly, need to avoid generational quality loss across saves, or are building on a workflow that requires a lossless format. For publishing photos on the web, JPEG, WebP, or AVIF will serve smaller files.

Convert a JPEG to PNG

Free · No signup · Files are processed for the conversion only — never stored.

Lossless output.
No new compression artifacts.
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JPEG's lossy compression is fine for final delivery, but it punishes images that get edited, zoomed, or re-saved. Converting a JPEG to PNG gives you a lossless file for editing, archiving, and re-encoding without piling on generational quality loss with every save.

How to Convert JPEG to PNG

Add an image. Drop an image file into the converter box, or flip the toggle and paste an image URL.
Convert. Click the convert button. The image is converted to PNG in a moment.
Download. Save the converted PNG file to your device.

Frequently Asked Questions

How is a JPEG image converted to PNG?
The conversion runs on PicPerf's image processing service: your JPEG is decoded and re-encoded as a lossless PNG. The file is processed for the conversion only and never stored.
Is PNG lossless?
Yes. PNG uses lossless compression, so converting a JPEG to PNG never adds compression artifacts — the image looks exactly like the JPEG you started with, just without any further degradation. Keep in mind that artifacts already baked into the original JPEG can't be removed by a format change.
Why is the PNG file so much bigger than the JPEG?
Lossless formats don't discard detail the way JPEG does, so a PNG of a photo is commonly two to ten times larger than the equivalent JPEG. That's the trade-off for zero quality loss — which is why PNG is best for editing, archiving, and graphics rather than final delivery of photos.
Does converting JPEG to PNG add transparency?
No. A JPEG has no alpha channel, so the resulting PNG is fully opaque. PNG supports transparency, but there's nothing transparent in the source image to preserve.
When should I convert JPEG to PNG?
When you plan to edit the image repeatedly, need to avoid generational quality loss across saves, or are building on a workflow that requires a lossless format. For publishing photos on the web, JPEG, WebP, or AVIF will serve smaller files.