Convert PNG to JPG Privately
Transform uncompressed PNG graphics and photos into lightweight, universally compatible JPG images directly on your device.
Format details
Why convert PNG to JPG?
Portable Network Graphics (PNG) use lossless compression and support transparent backgrounds, which makes them ideal for UI assets, illustrations, and screenshots. However, photographic PNGs often balloon to 5 to 10 times the size of an equivalent JPEG. Converting PNG to JPG applies perceptually tuned lossy discrete cosine transform compression, stripping alpha channels and dramatically reducing storage footprint for web sharing, email attachments, and photo galleries.
Quick guide
How to convert PNG to JPG
Select your PNG images
Drag and drop PNG images into the drop area, or tap the button to choose files from local storage.
Tune JPEG quality
JPG is selected automatically as the output. Adjust the compression slider if you prefer higher fidelity or smaller file size.
Save converted JPGs
Libvips WebAssembly compiles your JPGs in memory. Download individual pictures or grab the entire batch as a single ZIP archive.
What happens to transparent PNG backgrounds when converted to JPG?
Because the JPEG specification lacks an alpha transparency channel, transparent regions in your PNG are rendered against a solid white background during rasterization.
Are my photos uploaded to any third-party server?
No. All pixel decoding and JPEG encoding happen entirely inside your browser's WebAssembly sandbox. Your pictures never leave your local machine or touch remote infrastructure.
How much file size reduction should I expect?
For photographic content and high-resolution camera captures, converting PNG to JPG typically reduces file size by 70% to 90% with negligible visible quality loss.
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