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NOBSPDF

Convert PNG to JPG

Turn a PNG into a much smaller JPG. Transparent areas are filled with a colour you choose, because JPG cannot store transparency.

  • Free
  • No signup
  • No watermark
  • Files stay on your device

Processed locally

Your image never leaves your computer.

How to convert png to jpg

  1. 1

    Choose your PNG

    Drop the PNG onto the page, or browse for it.

  2. 2

    Set quality and background

    JPG is preselected. If the PNG has transparency, pick the background colour that will replace it — white by default.

  3. 3

    Convert and download

    Press Convert image and compare the before and after sizes.

Transparency has to go somewhere

JPG has no alpha channel. Every transparent pixel must be given a solid colour, and if a converter does not ask you which one, it has silently decided for you — usually white, occasionally black, which can ruin a logo.

This tool detects transparency in your PNG and only then shows the background picker, defaulting to white. Choose the colour of whatever the image will sit on and the edges will blend correctly.

How much smaller will it be?

For photographs stored as PNG, the drop is usually dramatic — an 8 MB PNG frequently becomes a few hundred kilobytes at quality 85 with no visible difference.

For screenshots, logos and text, be careful. JPG smears the sharp edges that PNG stores perfectly, and the result can look worse while barely saving space. WebP is the better answer for that kind of image.

Frequently asked questions

Is my PNG uploaded to convert it?
No. The conversion runs in your browser using WebAssembly and canvas APIs, so the image data never leaves your device. There is no upload endpoint in this application at all — you can watch the network tab while you convert.
What happens to the transparent parts?
They are filled with the background colour you choose before converting. White is the default. This is unavoidable — the JPG format has no way to store transparency.
Will the image lose quality?
Slightly, because JPG is lossy. At quality 85 the difference is invisible for photographs. Keep the PNG if you may need to edit further.
Why does my screenshot look fuzzy as a JPG?
JPG is designed for photographs and struggles with hard edges and small text, producing halos around them. For screenshots, stay with PNG or convert to WebP.
Can I set the JPG quality?
Yes. Use the presets or drag the quality slider, then convert — the result panel shows the exact size you ended up with.