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FreeNo uploadNo sign-upBatch

PNG to JPG Converter

Shrink heavy PNGs into compact JPGs for email, uploads and listings. Converted right in your browser.

Convert
Files never leave your device

Drop PNG files here

or paste with Ctrl+V · batch and mixed formats welcome

Background for transparency
SVG size
Resolution
Split
Compression
Pages are re-saved as optimised images, so text will no longer be selectable.
Add PDFs and images in any order, then use the arrows to arrange them.
LosslessPNG keeps every pixel. Transparency is preserved.
Icon sizes
Page size
    • Private by design. Converted inside your browser.
    • Instant. No upload queue, no waiting.
    • Unlimited. Convert hundreds of files, download as ZIP.

    How to convert PNG to JPG

    1. Add your PNG files

      Drop them on the converter, click Choose files or paste from the clipboard. You can add as many as you like.

    2. Adjust the settings

      Set the JPG quality and choose a colour to replace transparent areas. The file sizes before and after are shown for every image.

    3. Download your JPG files

      Each file converts automatically. Save files one by one or all at once as a ZIP.

    Why convert PNG to JPG?

    PNG files are lossless, which makes them large. A photo saved as PNG can be five to ten times bigger than the same photo as JPG, enough to hit email attachment limits or slow down an upload.

    Converting photos and complex images to JPG cuts the size dramatically with no visible loss at sensible quality settings. Keep PNG for screenshots with small text, line art and anything that needs a transparent background.

    PNG vs JPG

    PNGPortable Network GraphicsJPGJPEG image
    TypeRaster graphicRaster photo
    CompressionLosslessLossy, adjustable quality
    TransparencyFull alpha channelNot supported
    AnimationAPNG only, limited supportNot supported
    SupportEvery browser and editorEvery device, browser, app and website
    Best forScreenshots, logos, UI, images with text or transparencyPhotos you need to share, upload or print

    Frequently asked questions

    How much smaller will the JPG be?

    It depends on the image. Photos usually shrink by 70–90%. Simple graphics with flat colours may shrink less, and occasionally a tiny PNG icon is already smaller than its JPG version.

    Does PNG to JPG reduce quality?

    JPG is lossy, so some data is discarded. At 85–95% quality the change is not visible in normal viewing. You can compare the before and after sizes and reconvert at a different quality instantly.

    What happens to transparent backgrounds?

    They are filled with the background colour you choose, white by default, because JPG cannot store transparency.

    Can I convert many PNG files to JPG at once?

    Yes. Drop as many files as you like and download them one by one or all together in a ZIP archive.

    Are my files uploaded to a server?

    No. formatmath converts files with code that runs inside your browser. Your files are never uploaded, stored or seen by us.

    Is it free?

    Yes. There is no watermark and no daily limit. An account is optional and only keeps a history of your conversions.

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