PNG → JPG

Convert PNG to JPG
(No Upload)

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Usually cuts the file size by most of its bulk. Nothing is uploaded, and there is no watermark.

About PNG to JPG

A .png file stores an image losslessly, meaning every pixel is kept exactly. That is ideal for screenshots, logos, diagrams and anything with sharp edges or transparency. It is a poor fit for photographs, where it produces enormous files for no visible benefit.

Converting to .jpg is the standard way to make an image small enough to email, attach, upload or put on a website. A photograph saved as PNG can easily be ten times the size of the same picture as a JPEG, with no difference you can see.

When you should convert, and when you should not

This one genuinely depends on the image, so it is worth a moment:

  • Photographs: convert. JPEG was designed for exactly this and the size saving is dramatic.
  • Screenshots of text, diagrams, logos, line art: think twice. JPEG compression works by blurring detail it judges unimportant, and sharp edges are precisely where that becomes visible. Text especially picks up a faint smearing around the letters. PNG stays crisp.
  • Anything with transparency you need: do not convert. JPEG cannot store it, and it will be filled with white.
  • Images you are still editing: keep the PNG as your working copy and export JPG at the end. Every JPEG save costs a little quality, and it accumulates.

Transparency becomes white

Since JPEG has no transparency, transparent areas have to be filled. This page uses white, matching what image editors do. A logo with a transparent background will come out on a white rectangle. If that does not suit the place you are putting it, keep the PNG.

How much smaller will it be

For a photograph, expect the JPEG to be somewhere between a fifth and a tenth of the PNG. For a screenshot with large flat areas of colour the saving is much smaller, because PNG compresses flat colour extremely well already, and it is one of the cases where JPEG can occasionally produce a larger file than the PNG while also looking worse. If that happens, it is a sign the image was better suited to PNG all along.

Quality

This page encodes at a high quality setting, which for photographs is visually indistinguishable from the original at normal viewing sizes while still cutting most of the file size. Unlike converting between two lossy formats, converting from PNG is a clean first compression: the PNG holds the exact pixels, so the JPEG is made from perfect source data rather than from something already degraded.

Nothing is uploaded

The conversion runs inside your own browser tab. Your file is read from your disk, converted by code already running on your machine, and written straight back out. It is never sent to a server, which means there is no queue to wait in, no upload progress bar, no account, no watermark, and nothing of yours sitting on someone else's hard drive afterwards. You can disconnect from the internet after the page loads and it will still work.

PNG to JPG FAQ

Does converting PNG to JPG reduce quality?
JPEG is lossy, so some information is discarded. Because a PNG holds exact pixels, the JPEG is encoded from perfect source data, and at the high quality setting used here photographs look identical at normal viewing sizes. Screenshots of text are the case where the difference can become visible, since JPEG blurs sharp edges slightly.
What happens to the transparent background?
It is filled with white, because JPEG cannot store transparency. If you need the transparency, keep the PNG or convert to WebP, which supports both transparency and small files.
How much smaller will the JPG be?
For photographs, typically five to ten times smaller. For screenshots with large flat areas of colour the saving is much less, and occasionally the JPEG comes out larger while looking worse, which is a sign the image suits PNG better.
Should I convert screenshots to JPG?
Usually not. JPEG compression blurs sharp edges, and text in a screenshot picks up a visible smearing around the letters. PNG keeps text crisp and often compresses screenshots well anyway.
Is there a limit on how large an image can be?
No imposed limit. Any raster conversion has to hold the decoded pixels in memory, which is width times height times four bytes regardless of the compressed file size, so an extremely large image is bounded by your device's memory rather than by any cap this tool sets.

Other conversions

MOV to MP4HEIC to JPGWebP to PNG