Turn PNG into a lighter JPG. Adjust quality and convert right in your browser, no install.
Click to choose a file Drag an image here
JPG, PNG, WebP, HEIC, and more
How to use it
- 1Drag in the PNG image you want to convert, or click to upload it.
- 2Make sure the output format is set to JPG — it's the default on this page.
- 3Use the quality slider to balance file size and image quality. Around 80–85% trims the size with no noticeable difference.
- 4Press Convert and the reduced size compared to the original PNG will appear. Download to save — that's it!
Handy tips
- If a PNG has a transparent background and you convert it to JPG, those transparent areas will be filled with white. For logos or stickers that need transparency, keep them as PNG or WebP.
- Photos with lots of colors and fine detail are much lighter as JPG than as PNG.
- Images heavy with text or lines can develop slight noise around edges in JPG. In those cases, PNG or WebP will serve you better.
Where does the transparent background go — the white-fill logic
PNG stores an extra piece of information for every pixel called an alpha channel, which records how transparent that pixel is. It's the alpha channel that lets a logo or sticker with its background removed sit naturally on top of anything. JPG, however, has no alpha channel at all. So when you convert a PNG to JPG, the previously transparent areas have to be filled with some solid color — and this tool fills them with white.
This isn't a flaw; it's predictable behavior. If the image will sit on a white background, it lines up cleanly. If you planned to place it over a colored background, you'll see an awkward white box around it instead. In that case, keep the transparency by staying with PNG or WebP rather than JPG. In short, "will this image sit on a white backdrop?" is your test for whether converting to JPG is safe.
How much size drops — what to expect from screenshots and graphics
How much the file shrinks depends heavily on the content. For a color-rich photographic screenshot or a captured camera frame saved as PNG, converting to JPG at 80% quality commonly cuts the size to less than half, and sometimes down to a fifth. PNG had grown heavy storing all those photo colors losslessly, so JPG's lossy compression pays off dramatically here.
By contrast, a UI screenshot that's mostly text on a flat background, or a simple shape-based graphic, compresses well as PNG to begin with and is already light — so switching to JPG may save little, or even smudge the edges of the letters. The result card shows the reduction versus the original right away, so if there's no real gain, just keep it as PNG.
When JPG is the answer, and when to keep PNG
For situations that demand a file that opens for anyone and stays light — email attachments, embedding in documents, prints and photo prints — JPG is close to the right answer. Real-world photos for a web page, travel photo albums, and product shots also load faster and save storage when converted to JPG.
On the flip side, keep PNG for logos and icons that need a transparent background, UI captures and diagrams where text and lines must stay crisp, and any master file you plan to re-edit repeatedly. JPG is a lossy format that discards a little information every save, so leaving intermediate editing files as JPG stacks up degradation. A safe habit is to export only the final shared copy as JPG while keeping your working master as PNG.
Frequently asked questions
JPG does not support transparency. Any transparent parts will automatically be filled with white. If you need to preserve the transparent background, choose PNG or WebP instead.
It depends on the quality setting, but at 80% or above it's difficult to tell with the naked eye. JPG compression isn't fully lossless, but it's more than sufficient for everyday sharing and web use.
For photos, 80–85% is a comfortable sweet spot — barely distinguishable from the original by eye while cutting the size a lot. If speed matters more, like chatting or a quick share, you can drop to around 70%; for prints or photo printing, raise it to 90% or higher. Compare in the preview and pick the point you like.
It varies by image type, but photos typically become 50–80% lighter as JPG compared to PNG. Illustrations or screenshots with large areas of solid color may see a smaller reduction.
No. Once you convert to JPG, the information dropped by lossy compression is gone for good. Converting that JPG back to PNG won't recover the lost detail, and the white-filled background won't turn transparent again. That's why it's best to keep the original PNG rather than delete it.
No, the original stays untouched. You only receive the converted JPG as a new file, and since everything is processed on your device, nothing is sent anywhere.