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KaiConvert
Local

Convert PNG to JPG

Turn a lossless PNG into a much smaller JPEG, with control over quality and what happens to transparency.

Drop an image here

or click to browse

Accepted: PNG

Try one of these

Processed locally. Your image never leaves your device.

Keep going without re-uploading

Your image stays loaded in the editor. Pick the next action and carry on.

PNG stores every pixel exactly, which is perfect for logos and screenshots and wasteful for photographs. A photo saved as PNG is routinely five to ten times larger than the same photo as a JPEG that looks identical.

The one thing to decide before converting is transparency. JPEG has no alpha channel, so any transparent area has to become a solid colour. KaiConvert flattens onto white by default and lets you pick a different colour if white is wrong for your layout.

What you get

  • Large size reduction for photos

    Photographic content typically drops by 80–90% moving from PNG to a high-quality JPEG.

  • You choose the flatten colour

    Transparent pixels are composited onto a background colour you control rather than silently turning black.

  • Universal compatibility

    Every browser, printer, email client and legacy application in existence reads JPEG.

  • Metadata does not carry over

    The re-encode writes a clean file, so nothing from the source container follows the image.

How it works

  1. 1

    Load the PNG

    It is decoded locally, alpha channel included.

  2. 2

    Set the background and quality

    Pick the colour that replaces transparency and a JPEG quality between 1 and 100.

  3. 3

    Download the JPG

    The canvas is encoded to JPEG in the browser and handed to you as a download.

Why use KaiConvert

  • No upload for local tools
  • Works offline once the page is loaded
  • Cloud AI is always clearly labelled before you start

Frequently asked questions

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