TeraConvertTeraConvert

Convert JPEG to PNG

A JPEG to PNG converter that runs in your browser. Nothing is uploaded, and your files never leave your device.

Conversion Successful
100% local. Your file is processed in this tab and never uploaded.

How to Convert JPEG to PNG

  1. 1

    Drop your JPEG file

    Drag it into the converter above, or click to browse. Nothing is uploaded.

  2. 2

    Adjust settings (optional)

    Crop, resize, rotate, or set quality from the sliders icon.

  3. 3

    Convert and download

    PNG is preselected. The file converts in this tab and downloads when done.

Why Convert JPEG to PNG?

JPEG and JPG are the same format wearing two different file extensions, and both discard a little detail every time they save. PNG is lossless, so once your image is a PNG, further edits and re-saves stop degrading it, and you pick up an alpha channel for a transparent background.

It will not undo the compression already baked into the JPEG, but it stops the losses from here on.

JPEG
PNG
Compression
Lossy
Compression
Lossless
Transparency
No
Transparency
Yes (alpha channel)
Max colors
16.7 million
Max colors
16.7 million + alpha
Animation
No
Animation
No (APNG rare)
Browser support
Universal
Browser support
Universal
Typical use
Photography
Typical use
Graphics, screenshots

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Frequently Asked Questions

Is JPEG different from JPG?
No. They are identical. JPEG is the full name of the format; JPG is the three-letter extension left over from old Windows file naming. The pixels and the codec are the same.
Will converting to PNG restore quality?
No. JPEG compression is lossy and permanent. PNG preserves whatever the JPEG currently contains without adding more loss, but it cannot recover detail that was already thrown away.
Why is my PNG larger than the JPEG?
PNG is lossless and stores pixel data more completely, so it is almost always bigger than the equivalent JPEG. That extra size is the cost of not losing anything further.
Does the PNG give me transparency?
The PNG has an alpha channel, but a JPEG has no transparency to carry over, so the background starts opaque. You can then erase areas to transparent in an image editor.
Is my file private?
Yes. The conversion runs in your browser tab and nothing is uploaded, so your files never leave your device. The only limit is size: 25 MB for this format. Bigger files route to the desktop app.

Converting a folder of JPEGs to PNG?

TeraConvert Desktop batch-converts a whole folder of JPEGs to PNG natively using macOS sips, with no 25 MB browser cap.

Get TeraConvert for MacThis format runs in the Mac app. One-time Pro purchase, 14-day money-back guarantee.