PNG to JPG converter
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or drop them here, or paste with Ctrl+V / ⌘V
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This converter runs in your browser and needs JavaScript. Turn it on to convert; the steps below explain everything.
Settings
Shrink heavy PNG photos and screenshots into JPGs, with a background colour of your choice for transparent parts.
PNG is lossless, which is ideal for graphics and terrible for photos: a 12 MP camera photo saved as PNG can weigh well over 10 MB. Converting it to JPG typically makes it many times smaller with no visible change, which is what email limits, upload forms and slow connections need. This converter runs in your browser, handles any number of files and lets you decide what colour should replace transparent areas, since JPG has no transparency.
How to convert PNG to JPG
- Drop your PNG files, screenshots or exported graphics here.
- Choose quality (90 for photos, 95 for screenshots with text) and, if the PNGs have transparent parts, the background colour that should fill them.
- Convert and download the JPGs one by one or as a ZIP.
What happens to quality, size and metadata
This is a lossy step: JPG throws away detail the eye is unlikely to miss, which is why the files get so much smaller. For photos the result at quality 90 looks the same as the PNG. For flat graphics with sharp edges, such as text, charts and UI screenshots, JPG can add faint ringing around edges; for those we use a high-precision encoder that keeps full colour resolution, and quality 95 keeps text crisp.
Transparent pixels are blended onto your background colour (white by default). PNG files rarely carry camera metadata; when they do, the JPG keeps the date taken and drops any location.
- Test files
- 30
- Average input
- 14.7 MB
- Average output
- 2.0 MB
- Size change
- 86% smaller
- Time per file
- 318 ms
PNG vs JPG
| Full name | PNG | JPG |
|---|---|---|
| Full name | Portable Network Graphics | JPEG (Joint Photographic Experts Group) |
| Introduced | 1996 | 1992 |
| Defined by | W3C · ISO/IEC 15948 | JPEG (ITU-T & ISO/IEC) · ITU-T T.81 / ISO/IEC 10918-1 |
| Compression | Lossless | Lossy |
| Transparency | Yes | No |
| Animation | Yes | No |
| Largest size | 2,147,483,647 × 2,147,483,647 px | 65,535 × 65,535 px |
| Chrome / Edge | Yes | Yes |
| Safari | Yes | Yes |
| Firefox | Yes | Yes |
| Windows | Yes | Yes |
| iPhone / iPad | Yes | Yes |
| Android | Yes | Yes |
| Typical use | Screenshots, logos, icons, diagrams and any image that needs a transparent background. | Photos for sharing, email, online forms and printing, where it has to open everywhere. |
PNG PNG is a lossless image format published by the W3C in 1996 and later as ISO/IEC 15948. Every pixel is kept exactly, and it supports full transparency, which makes it ideal for screenshots, logos and text. Photos saved as PNG are usually several times larger than as JPG.
JPG JPG is the lossy photo format standardised in 1992 as ITU-T T.81. It throws away detail the eye barely notices, and the quality setting decides how much. It has no transparency and no animation, but every phone, computer, browser, printer and upload form opens it.
Sources for this table
- www.w3.org/TR/png-3/
- www.iso.org/standard/29581.html
- caniuse.com/apng
- developer.mozilla.org/en-US/docs/Web/Media/Guides/Formats/Image_types
- developer.android.com/media/platform/supported-formats
- www.itu.int/rec/T-REC-T.81
- www.w3.org/Graphics/JPEG/itu-t81.pdf
Browser support data: caniuse.com, CC BY 4.0.
Without this site
On Windows 11, open the PNG in Paint and choose File › Save as › JPEG picture. Paint fills transparent areas with white and gives no quality setting.
On a Mac, open the PNG in Preview, then File › Export, Format › JPEG; the Quality slider sits right below. In Finder you can also right-click several files and use Quick Actions › Convert Image, which writes JPGs in one go.
On an iPhone, a screenshot saved to Photos can be shared to this page from Safari.
Troubleshooting
- Transparent logo turns black or white. JPG can’t store transparency. Choose the background colour deliberately, or keep the logo as PNG or WEBP.
- Text in screenshots looks smudgy. Raise quality to 95. Below 80, edges around letters start to show artefacts.
- The JPG is larger than the PNG. It happens with tiny icons and flat images with only a few colours. Keep those as PNG.
- Editing later. Every JPG save loses a little. Keep the PNG as your master copy if you will edit again.
Questions and answers
How do I change a PNG to a JPG?
Drop the PNG into this page, check the quality and background colour, and press Convert. The JPG is ready to save in a second or two. On Windows you can also open the PNG in Paint and use File › Save as › JPEG picture; on a Mac, Preview’s File › Export does the same with a quality slider.
Why is a PNG so much bigger than a JPG?
PNG stores every pixel exactly, and camera photos are full of fine noise that lossless compression can’t shrink much. JPG instead keeps what the eye notices and simplifies the rest. For photos that is often a 5–10× size difference with no visible change. For flat graphics the gap is small, and PNG can even win.
What happens to transparency when converting PNG to JPG?
It is replaced by a solid colour, because JPG has no alpha channel. White is the default; set a different colour in the settings if the image will sit on a coloured page. Half-transparent edges and shadows are blended onto that colour so they look smooth against it.
Should I use PNG or JPG?
Use JPG for photos and anything going into email, forms or social posts. Use PNG for logos, icons, diagrams, screenshots that must stay razor-sharp, and any image that needs a transparent background. If you need both small size and transparency, WEBP covers both.