PNG to JPG Converter
Shrink oversized PNG screenshots and photos into compact JPGs. Pick the background color that replaces transparency, tune the quality, batch convert, and download individually or as a ZIP. Everything is processed in your browser — nothing is uploaded.
How it works
PNG is a lossless format: it preserves every pixel exactly, which makes it perfect for logos, interface screenshots and graphics with sharp edges. But that perfection is expensive — a photographic PNG can easily be five to ten times larger than an equivalent-looking JPEG. This converter decodes your PNGs and re-encodes them as JPEGs, typically cutting file size by 70–90% for photo-like content.
The one thing JPEG cannot do is transparency. A PNG's alpha channel has nowhere to go in a JPG, so before encoding we composite (flatten) the image onto a solid background color of your choice. White is the default and matches what most viewers, documents and printers expect; black suits dark-themed graphics, and the custom color picker lets you match any brand or page background. Each pixel's final color is blended with your chosen background according to its transparency, so soft edges and drop shadows blend naturally instead of getting harsh cut-outs.
To use it, drop your .png files onto the upload area, choose a background, set the quality
slider and press Convert. Decoding uses your browser's native PNG decoder and the flattening happens on an
off-screen canvas — all locally, so nothing ever leaves your device. Each finished JPG can be downloaded
individually, or you can grab the whole batch as a ZIP archive.
Know when not to convert. JPEG compression is designed around photographs: it throws away fine high-frequency detail your eyes barely notice in a photo, but the same smudging is glaringly obvious on crisp text, thin lines and flat color blocks. A screenshot full of UI text will look noticeably worse as a JPG, and logos with transparency lose their alpha channel entirely. Rule of thumb: photos and gradients convert beautifully; text-heavy graphics and anything needing transparency should stay PNG. And if your destination is a modern website where you control the markup, consider WebP via our optimizer instead — it keeps transparency and beats JPEG on size.
Frequently asked questions
Why is my PNG so much bigger than the JPG version?
PNG uses lossless compression, which preserves every pixel perfectly but is inefficient for photographic content. JPG uses lossy compression tuned for how human vision works, so photos and gradients shrink dramatically — often 70–90% smaller.
What happens to transparency when converting PNG to JPG?
JPG has no alpha channel, so transparent pixels must go somewhere. This converter composites them onto a background color you choose — white, black, or any custom color — before encoding.
When should I NOT convert PNG to JPG?
Keep PNG for logos, icons, line art, screenshots with text, and anything needing transparency. JPG’s compression smudges sharp edges and flat colors, which is very visible on graphics but barely noticeable on photos.
Will converting PNG to JPG reduce quality?
PNG is lossless and JPG is lossy, so yes, technically some data is discarded. At 92% quality the loss is invisible for photos. For pixel-perfect graphics, stay with PNG.
Are my images uploaded to a server during conversion?
No. The PNG is decoded and re-encoded entirely inside your browser using its built-in image codecs. Your files are processed in your browser — nothing is uploaded, stored or transmitted.