Why convert PNG to JPG?
PNG is lossless, which is perfect for graphics but wasteful for photos: a photo or a photo-heavy screenshot saved as PNG can be 5 to 10 times bigger than the same image as a high-quality JPG. Converting is the quickest way to shrink photos that ended up as PNGs, from screenshots of images, design exports or apps that save everything as PNG, and to meet forms and websites that accept only JPG.
Quality and file size
The JPG is saved at 92% quality, high enough that the result looks the same as the PNG at normal viewing size, while still cutting the file dramatically for photographic content. The width and height stay exactly the same.
For screenshots full of small text, flat-colour graphics and logos, PNG often does better: JPG can add faint fuzz around sharp edges and text. If the image is mainly text or line art and the file isn't too large, keeping it as PNG is usually the better choice.
What happens to transparency when converting PNG to JPG?
JPG can't store transparency. Any transparent or semi-transparent parts of the PNG are placed on a white background, which suits documents, forms and most websites. Without that step, many converters show transparent areas as black.
If you need to keep transparency and still want a small file, use the Image Compressor instead: it turns PNGs into WebP, which supports transparency and is usually far smaller than PNG.
Which sites require JPG?
Some places still insist on JPG:
- Government, visa and exam portals that accept only JPG/JPEG photos and scans.
- Older content management systems and online shops.
- Some print services and photo kiosks.
- Email newsletters, where smaller JPGs load faster on mobile data.
Batch conversion, no upload
Add any number of PNGs, convert them in one go, and download each JPG or all of them as a ZIP. Everything runs in your browser, so designs, screenshots and documents are never uploaded. Output files carry no hidden metadata.
Should I use PNG or JPG?
Choose by what's in the image:
- Photos, scans of photos and images with gradients: JPG. Much smaller, with no visible difference.
- Screenshots of apps and documents, diagrams, charts, logos and anything with small text: PNG. JPG can leave faint fuzz around sharp edges.
- Anything with a transparent background: PNG or WebP, since JPG can't store transparency.
- Required by a form or portal: whatever it lists. JPG is the most commonly required format.
Watch the edges of transparent images
Logos and cut-out images have soft, semi-transparent edges so they blend smoothly into any background. When transparency is filled with white, those edges are blended onto white. That looks perfect on white pages and documents, but if you later place the JPG on a dark background, a thin pale outline can appear. For dark designs, keep the PNG.
Also note that renaming a .png to .jpg doesn't convert it. Converting rewrites the data as a real JPEG, which strict forms require.
Screenshots: the most common PNGs
Screenshots are saved as PNG on iPhone, iPad, Mac and in the Windows Snipping Tool by default. That's ideal for crisp text, but a full-screen iPhone or Mac screenshot of a photo, a video frame or a map is often 2–5 MB as PNG. As a 92% JPG, the same screenshot is typically a few hundred kilobytes, which matters when you're sending dozens of them or attaching them to a support ticket with an upload limit.
For screenshots that are mostly text, such as chats, documents and settings pages, PNG files are already compact and look sharper, so it's often better to keep them as they are or to crop away what isn't needed.
Converting a batch
Select or drop as many PNGs as you like; each is converted in turn and listed with its new size. Download them individually, or all together as a ZIP. Files with the same name get -2, -3 and so on added, so nothing is overwritten. The ZIP is built in your browser like everything else, so a folder of design exports or screenshots never leaves your computer.