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Convert PNG images to JPG in your browser with no upload required.
Convert PNG images to JPG and cut file size on photographic images
Batch convert a whole folder of PNG files at once
Set the JPG quality and see the resulting size before you download
Process everything locally in your browser with no uploads
Select or drop your PNG images
Keep JPG as the locked output format
Adjust quality if the file needs to be smaller
Convert and download your JPG files
Private browser-based conversion with no server uploads
No account or software install required
Useful when an upload form, email client, or printer rejects PNG
PNG images
JPG/JPEG files
No server uploads
Multiple files supported
PNG and JPG solve different problems. PNG stores every pixel exactly as it was saved and supports transparency; JPG throws away detail the eye is unlikely to notice in order to make the file much smaller, and it has no transparency at all. Converting is worth doing when the image is photographic and the size matters — and worth avoiding when the image is a screenshot full of text or needs a transparent background.
JPG has no alpha channel. Any transparent area in your PNG has to become a solid colour, which is why logos exported as JPG often end up on an unexpected white or black box. If you need the background to stay transparent, keep the file as PNG.
Photographs and screenshots of photos usually shrink dramatically — often to a fraction of the original. Flat graphics, line art, and UI screenshots with large blocks of a single colour are exactly what PNG compresses well, so those files can come out barely smaller or even larger as JPG.
JPG compression discards image data permanently. Converting back to PNG later restores the file extension but not the detail, so keep the original PNG if the image still has editing ahead of it.
No. JPG cannot store transparency, so transparent pixels are flattened onto a solid background. If the transparency matters, stay with PNG or convert to WebP, which keeps an alpha channel and is still much smaller than PNG.
That happens with flat-colour images — icons, charts, screenshots of interfaces. PNG stores large uniform areas very efficiently, while JPG spends data trying to reproduce the hard edges between them. If the file grew, the original PNG was already the better format for that image.
Around 80 to 90 is a good default for photos: the difference is hard to see and the file is a lot smaller. Go lower only when you have a hard size limit, and check the result — text and sharp edges are where JPG artefacts show up first.
No. The conversion runs entirely in your browser, so the files never leave your device and there is no upload to wait for.
Most screenshot tools, design apps, and phone screen captures save PNG by default, so a lot of the PNG files people want to shrink are not photos at all. They are captures of apps, slides, charts, and chat threads. Those images behave very differently from camera photos once they become JPG. This guide covers what to expect for each kind of content, how to read the numbers the converter shows you, and when the better move is to leave the file as PNG.
JPG splits the picture into small blocks and describes each block with smooth waves of brightness and colour. That suits the gradual changes in a photograph, but a screenshot is made of hard edges: black letters on white, a one-pixel border around a button, a thin divider line. Around those edges JPG leaves faint ripples, usually visible as grey speckles next to text or a slight haze inside flat coloured panels.
Coloured text suffers most. JPG encoders typically store colour at a lower resolution than brightness, so red error messages, blue links, and syntax-highlighted code can look slightly smeared even when black text still looks fine. Before you send a converted screenshot, open it at 100% zoom and look at the smallest coloured text. If it is still easy to read there, it will be fine at the size people actually view it.
JPG has no alpha channel, so this converter paints a white background behind the image before encoding it. Fully transparent areas simply become white. Partly transparent pixels, such as the soft edge of a logo, a drop shadow, or the anti-aliased outline of an icon, are blended with that white. On a white web page the result looks exactly as intended.
The problem appears when the JPG ends up on a dark or coloured background: the blended edge pixels now show as a pale fringe, and a soft shadow turns into a grey smudge. If you know where the image will sit, use the image compressor instead. Open its settings panel, set Convert to JPG, and choose the fill colour that matches the destination background, so the edges blend into the right colour from the start.
After conversion each file shows its original size, its converted size, and the percentage difference. A green negative number means the JPG is smaller; a red number with a plus sign means it grew. Both results are normal and tell you something about the image. PNG compresses runs of identical pixels very efficiently, so a screenshot of a mostly white document or a flat interface is already compact. Photos, gradients, and noisy textures are where PNG is weakest and JPG gains the most.
The quality slider runs from 10 to 100 and starts at 85. Changing it does not update files that are already converted: move the slider and click Convert again, and every file in the list is re-encoded with the new setting. That makes it easy to compare two settings on a real file. If a lower setting barely changes the percentage but visibly damages the text, go back up, because you are paying in clarity for almost no saving.
Keep PNG for images that still need transparency, for icons and pixel art where every edge matters, and for text-heavy screenshots that came out larger as JPG. Keep it too if you plan to crop, annotate, or edit the image again later: each JPG save adds a new round of compression, while PNG stays lossless no matter how many times you save it.
If the real problem is file size rather than compatibility, you have two alternatives that preserve transparency. The image compressor can shrink a PNG and keep it as PNG by reducing the number of colours, which works especially well on flat graphics. The general image converter can turn the PNG into WebP, which keeps the alpha channel and is usually much smaller. Only choose JPG when the destination specifically requires it or when the image is photographic.
You can add many PNG files at once by selecting them or dropping them onto the upload area. Only PNG files are accepted on this page; anything else is left out and a short notice tells you so. All files in the list are converted with the same quality setting, one after another, and you can remove any of them before converting.
Each converted file keeps its name and gets a .jpg extension. Download all saves the files one by one rather than as a single archive, so some browsers will ask whether the site may download multiple files the first time. Because the image is redrawn and re-encoded in your browser, embedded metadata from the PNG is not copied into the JPG, and nothing is uploaded at any point. If you later need a PNG from a JPG, the JPG to PNG converter handles that direction.