Image Converting

PNG to JPG converter

Drop PNG files here Or tap to choose. As many as you like — it all runs on your device. Quality 85

Your images never leave this device

Local · transparency flattened onto white

This is the conversion that actually saves space. A PNG screenshot or photograph stores every pixel exactly and gets enormous; the same image as a JPG is routinely a tenth of the size with no visible difference. The catch is that JPG throws detail away permanently and cannot hold a transparent background.

How to convert PNG to JPG

1 Drop your PNG files in, or tap to choose them.

2 Set the quality — 85 is the usual sweet spot. The saving per file is shown as it converts.

3 Save them one by one, or take the whole batch as a ZIP.

Whether this is a good idea depends entirely on what is in the image. Photographs and screenshots of photographs convert brilliantly, because JPG was designed for exactly that kind of continuous tone. Logos, diagrams, screenshots of text and anything with hard edges convert badly: JPG smears a faint halo around every sharp boundary, and on a screenshot of a spreadsheet that is immediately obvious. Keep those as PNG, and use this for the pictures.

Questions

Why did my logo come out blurry at the edges? −

JPG compresses in eight-by-eight blocks and struggles with hard edges. For logos, line art and text, PNG is the right format and converting it is a step backwards.

What happens to transparency? +

How much smaller will the file be? +

Can I go back to PNG afterwards? +

Is anything uploaded? +

Sources

MDN — image file type and format guide W3C — PNG specification

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