PNG to JPG Converter
Shrink oversized PNG photos into lean JPGs, 60 to 90 percent smaller, with your choice of background color for transparency. Batch up to 20 files in your browser; nothing is uploaded.
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Processed locally on your device. No image bytes are sent to any server.
Why PNG photos are so large, and when JPG is the fix
PNG is lossless: it preserves every pixel exactly, which is perfect for screenshots and graphics and disastrous for photographs. A photo has millions of subtly different colors, and storing them exactly is why a camera shot saved as PNG balloons to many megabytes. JPG instead discards detail your eye cannot see, which is why the same photo drops to a tenth of the size. If the image came out of a camera or looks like one, JPG (or WebP) is almost always the right format; if it came off a screen, PNG usually is.
Oversized images are also the most common Core Web Vitals problem: a hero PNG that should have been a JPG can single-handedly blow Largest Contentful Paint. Converting is the cheapest page-speed win there is, and the size badges above show you the win per file as you convert.
PNG to JPG FAQ
How much smaller will my PNG get as a JPG?
For photographic content, typically 60 to 90 percent smaller. PNG stores photos losslessly, which is enormously expensive for millions of unique colors; JPG was designed exactly for that content. A 4 MB photographic PNG commonly lands between 300 KB and 1 MB at quality 85 with no visible difference.
What happens to transparent areas?
JPG has no transparency, so transparent pixels must become a color. This tool composites them onto a background you choose: white by default, black, or any custom color, so a logo on transparency converts cleanly instead of turning black the way naive converters do. If you need the transparency itself, convert to WebP instead.
When should I NOT convert PNG to JPG?
Screenshots with text, diagrams, charts and flat-color graphics. JPG compression smears sharp edges into visible fuzz, and the file can even come out larger. The size badge on each converted row warns you when that happens. Keep those as PNG, or convert to WebP which handles both kinds of content well.
What quality setting should I pick?
Quality 80 to 90 is the sweet spot for photos: visually identical to the original at a fraction of the size. Below 70, compression artifacts start showing in gradients and skin tones. The quality slider re-encodes live, so you can watch the size change and pick the point that suits the image.
Is anything uploaded when I convert?
No. The whole conversion runs in your browser: decode, background compositing, JPG encoding and the ZIP download are all local. No image bytes leave your device and there is nothing for a server to keep.
More free tools: Image Converter · JPG to PNG · PNG to WebP · Image Compressor · Image Resizer