Free Online Engineering Tools

PNG to JPG Converter

Convert PNG to JPG right in your browser — adjust the quality, fill transparent areas with any color, and get a much smaller file. Your image never leaves your device, so it’s completely private, instant, and free.

Add PNG
Convert
Save JPG

Drop your PNG here

or click to browse · also supports paste · PNG

Converts on your device — nothing is uploaded
JPG quality 90
Higher = better quality, larger file. 85–95 looks identical to most eyes.
Background for transparent areas
#ffffff
JPG can’t store transparency — transparent pixels are filled with this color.
PNG Original
Original PNG preview
Dimensions
File size
FormatPNG
CompressionLOSSLESS
convert
JPG Converted
Press Convert to generate the JPG
Dimensions
File size
FormatJPEG
CompressionLOSSY
✓ Saved to your device as image.jpg

Convert PNG to JPG — Free, Private, In Your Browser

This PNG to JPG converter turns a PNG image into a compressed JPG without ever uploading your file. The conversion runs entirely in your browser using the HTML5 Canvas, so your image stays on your own device from start to finish — nothing is sent to a server, nothing is stored, and there is no sign-up, no watermark, and no software to install. The main reason to convert PNG to JPG is file size: a lossless PNG can be several times larger than the same picture saved as a JPG, so switching often shrinks the file by 60–80% while looking virtually identical.

How to Convert PNG to JPG

  1. Add your PNG — drag and drop it onto the drop zone, click to browse, or paste from your clipboard. The original appears with its dimensions and file size.
  2. Set quality and background — pick a JPG quality level and, if your PNG has transparency, a background color to fill it (white by default).
  3. Convert — press Convert to JPG. The image is flattened and re-encoded locally, and the new (smaller) file size is shown beside the original.
  4. Download — press Download JPG to save the file. Adjust the quality slider anytime and the preview updates instantly.

What Happens to Transparency?

JPG cannot store transparency — every pixel must have a solid color. So when a PNG with a transparent background is converted, those transparent areas are filled with a background color of your choice (white by default). This converter lets you pick any fill color with the swatches or the color picker before converting, and it even detects whether your PNG actually contains transparency so you know when the setting matters. If your image has no transparent pixels, the background color has no effect and the conversion is a straight re-compression.

Choosing the Right Quality

JPG uses lossy compression, so there is always a trade-off between file size and visual fidelity. The quality slider runs from 10 to 100:

QualityResult
90–100Near-perfect; hard to tell from the original. Larger files.
80–90The sweet spot for photos — small files, no visible loss.
60–80Noticeably smaller; slight softening on close inspection.
Below 60Smallest files, but visible compression artifacts.

For most photographs, a quality of 85–95 is indistinguishable from the source while still cutting the file size dramatically. Because the preview updates as you move the slider, you can watch the file size change and pick the point that suits you.

Why Convert PNG to JPG?

When You Should Not Convert to JPG

JPG is built for photographs, not for graphics with hard edges. If your PNG is a screenshot, logo, diagram, or contains text, JPG compression can add faint halos and blocky artifacts around the sharp edges, and the file may not even end up much smaller. In those cases you are usually better off keeping the PNG, or trying WebP. And of course, if you genuinely need a transparent background, JPG cannot provide one — stay with PNG. Need the other direction? Use the JPG to PNG Converter.

JPG vs PNG — Quick Comparison

FeaturePNGJPG / JPEG
CompressionLossless (every pixel exact)Lossy (adjustable)
File sizeLargerMuch smaller
TransparencyYes (alpha channel)No (filled with a color)
Best forLogos, screenshots, text, graphicsPhotographs, web, sharing
Edges & textStays sharpCan show artifacts

Is It Safe and Private?

Yes. Because everything happens locally through the Canvas API, your PNG is never uploaded, never copied to a remote server, and never stored after you close the tab. Many online converters send your file to their servers and delete it later; here there is nothing to delete, because the file never leaves your device. That makes it a safe choice for confidential, personal, or client images.

Need to hit a size limit? The Image Compressor shrinks any image to an exact KB size. Need the reverse? Use the JPG to PNG Converter, or shrink files further with the JPG to WebP Converter. iPhone photos? Try HEIC to JPG. For print or archiving, use JPG & PNG to TIFF, or explore the Number System Converter for the maths behind pixel values.

Frequently Asked Questions

How do I convert a PNG to JPG?

Add your PNG, set the quality and a background color for any transparent areas, press Convert to JPG, then Download JPG. Everything runs instantly in your browser.

Is this converter free?

Completely free, with no sign-up, no watermark, and no limit on how many images you convert.

Are my images uploaded to a server?

No. Conversion happens entirely in your browser via the HTML5 Canvas, so your image never leaves your device.

What happens to transparent areas?

JPG cannot store transparency, so transparent pixels are filled with the background color you choose (white by default). The tool detects transparency and lets you pick any fill color.

Will converting reduce the file size?

Usually yes — often by 60–80% for photos, since JPG is lossy while PNG is lossless. Screenshots and flat-color graphics are the exception and can stay smaller as PNG.

What quality setting should I use?

For most photos, 85–95 looks identical to the original while still shrinking the file a lot. Lower values give smaller files with more visible artifacts.

Does converting PNG to JPG lose quality?

JPG is lossy, so some data is discarded, but at 85–95 the difference is usually imperceptible. For sharp text or edges (screenshots), keeping the PNG can be better.