Free PNG to JPG Converter
When PNG is the wrong choice
PNG is a wonderful format for the right job: logos, icons, screenshots, diagrams, anything with sharp lines and flat colours. It is a poor choice for photographs. A photo saved as PNG keeps every pixel exactly, and a photograph has millions of subtly different ones, so the file balloons. People end up with a 6 MB PNG of something that would be 600 KB as a JPG with no visible difference. This converter fixes that for one picture or a whole folder.
How the conversion works
Drop your PNG files, and each one is redrawn on a canvas and saved as a JPG at the quality you set. The default of 90 percent keeps photos looking the same to the eye, and you can lower it for smaller files. Next to every result you see how much space you saved, so you can judge whether it was worth it. Download files one by one, or all together as a ZIP. Your PNGs are never changed or uploaded.
The background colour setting, explained
PNG can have transparent areas, and JPG cannot. When you convert, those see-through parts must become some colour, and you choose it. White is the usual choice and suits most documents and web pages with a white background. If the picture will sit on a dark page, pick a dark colour, or you will get a bright box around it. If the image is a logo you need to keep transparent, do not convert it at all. Keep it as PNG, or choose WebP, which supports transparency and is smaller.
Which images should you convert?
| Image type | Convert to JPG? |
|---|---|
| Photographs saved as PNG | Yes, a big saving |
| Scans of paper documents | Usually yes |
| Screenshots of apps and web pages | Often no. Text gets slightly soft edges |
| Logos with transparent backgrounds | No. Keep PNG |
| Flat-colour graphics | No. PNG is often smaller and sharper |
A quick way to decide on a batch
Convert two or three representative files and compare. Open the original and the JPG at full size, side by side, and look at edges and flat areas. If a screenshot’s text looks fuzzy or you see speckles near sharp lines, leave that kind of file as PNG. If the photos look identical and the savings are large, convert the rest. It takes a minute and saves you from converting the wrong things.
A real-world saving
Consider a folder of 40 photos saved as PNG at about 5 MB each. That is 200 MB, too large to email or to store on a small plan. Converted to JPG at 90 percent, photographs typically drop to a fraction of that, often under a megabyte each, so the whole folder can fit in a single ZIP of a few dozen megabytes. The exact numbers depend on the pictures, but the pattern is dependable: photographs saved as PNG are the single biggest source of avoidable file size.
Quality settings for different jobs
- Everyday photos: 90 percent, the default.
- Web pages and email: 80 to 85 percent for smaller files.
- Archiving: 95 percent, keeping the PNG original as well.
- Screenshots: if you must convert, use 95 percent and check the text.
Pictures for Word, email and presentations
If you are putting screenshots or graphics into a Word document, a slide deck or an email, the file size adds up quickly. Ten PNG screenshots can turn a small report into a 30 MB attachment. Converting photographs and busy images to JPG first keeps the document light, while leaving simple diagrams as PNG keeps their lines crisp. A mixed approach, choosing the format by image type, gives you a document that is both small and clean, and that opens quickly for the person on the other end, who may be on a slow connection.
Other ways to go smaller
If you want even smaller files than JPG, the image to WebP converter keeps transparency and is usually smaller still. If you need a specific size, use compress image to 100KB or another size tool. To go the other way, from JPG back to PNG, there is a JPG to PNG converter, although that cannot bring back detail that was already lost.
FAQ
JPG removes some detail to make the file smaller. At 90 percent quality this is not visible in photos. Text and sharp lines can show slight softness.
JPG cannot store transparency, so transparent areas are filled with the colour you choose.
Simple graphics with few colours compress very well as PNG. For those images, keep PNG or try WebP.
Yes. Add a batch and download all the JPG files in a ZIP.
No. Everything happens in your browser.
Ninety percent is a good default. Lower it to 80 or 85 for smaller web and email images, and raise it to 95 if you want to keep as much as possible.