What is this PNG to JPEG converter?
A free, browser-based tool that converts PNG images to JPEG in batch. Upload one or many images, set a quality level, and download everything as a single ZIP — at the original resolution. All processing happens locally in your browser, so your images are never uploaded.
When a PNG screenshot is too heavy to send
PNG records every pixel exactly, which is why screenshot utilities and design tools default to it. On photographic or full-screen content that exactness gets expensive: a Retina screenshot or an exported photo easily weighs several megabytes as a PNG. The same image saved as a JPG typically lands 5 to 10 times smaller, which is the difference between an email attachment that sends and one that bounces, or an upload form that accepts the file instead of rejecting it.
The conversion pays off most on images with continuous tones: photos, gradients, maps, video-call captures. Flat-color graphics with few colors are the exception; PNG already compresses those well, so the saving is modest and sometimes not worth the trade.
Two things JPG cannot do for you
JPG has no transparency. A logo or UI asset with a transparent background cannot keep it in this format; if the destination needs transparency, stay with PNG or switch to WebP. JPG compression is also tuned for smooth photographic transitions rather than hard edges, so crisp UI text and thin lines pick up slight softening and halo artifacts as the quality slider drops. For text-heavy screenshots, keep quality at 85 or above; for photos, 75 to 85 usually looks identical to the source at a fraction of the weight.
How to use it
- Upload one or more PNG images on the left (drag & drop or click).
- Adjust the quality slider to balance size and quality.
- Press “Convert & download zip” to get every image as JPEG.