PNG to JPG Converter
Your PNG is bigger than it needs to be, or a service only takes JPG. This converter changes PNG to JPG on your own device. The two formats treat transparency and sharp edges very differently, so a few choices on the right-hand panel decide how good the result looks. Here is what to watch for before you convert.
Embed this tool on your websiteShow code
Free to use on any site. Paste the code where you want the tool to appear. It runs inside the page; visitors' files are processed in their own browser and are not uploaded.
WordPress and most site builders have a "Custom HTML" block where this code can be pasted. The embed keeps a small link back to CalcMaster.
How to convert PNG to JPG
- Add your PNG files by dropping them, clicking the drop zone or pasting.
- The output format is already set to JPG. Adjust quality or size if you need to.
- Press Convert and compare the original and new size for each file.
- Download each file or all of them as a ZIP.
When to convert, and when not to
- The PNG is a photograph or a screenshot of a photo and does not need transparency.
- An upload form, e-mail or document tool prefers JPG.
- You want to cut file size and can accept some loss.
- Do not use it for logos, line art or screenshots with small text, where JPG adds visible smudging.
What changes
- JPG is lossy, so quality is reduced. The slider controls how much.
- Transparent areas are filled with the background colour you pick, white by default.
- Sharp edges and text can get faint halo artefacts around them.
- Metadata is not kept.
- There is no animation, so only a still image is produced.
Choosing a background for transparent areas
JPG cannot store transparency, so anything see-through in your PNG has to become a solid colour. White is the usual choice for documents and web pages with a light background. If the image will sit on a dark page, pick a dark colour instead, so you avoid a pale box around it.
Semi-transparent edges, such as a soft shadow or anti-aliased outline, blend with the colour you choose. If you pick a background that does not match the place where the image will be used, those edges can look rough.
Photos versus graphics
JPG is designed for photographic detail. It handles gradual colour change well and struggles with hard edges, flat colour blocks and text. A PNG screenshot of a spreadsheet or a logo with crisp lines may come out with visible fuzz around the lettering.
If your PNG is mostly flat graphics and you want it smaller, consider WebP instead, which can keep edges clean. For real photographs saved as PNG, JPG often gives a much lighter file; try one image and compare the sizes shown.
Setting the quality slider
Start with the default and look at the result at full size. Raise the value if you see blocks or mosquito-like specks around edges. Lower it if the file is still heavier than you want and the picture can take it. The right setting depends on the image, so test with a representative file before converting a big batch.
A quick decision guide
Convert when the PNG is a real photograph or a picture where small losses are invisible and you need a light file. Keep the PNG when the image is a logo, chart, diagram or screenshot with text, or when you will edit it again. If the picture is both flat graphics and needs to be smaller, try WebP on the PNG to WebP page instead.
When in doubt, convert one file, open it at full size next to the original, and look closely at the edges of letters and shapes. That check takes a minute and tells you whether JPG suits this kind of image.
Batch conversions deserve a spot check. Convert the whole set, then open the first, the middle and the last result at full size, looking for halos around letters, faded flat colours and banding in gradients. If one image behaves badly, convert it again alone with a higher quality value or keep its PNG, and let the rest go through as they are.
Privacy: your files stay on your device
- The tool decodes, resizes and encodes your pictures with your browser. The files are never sent to a server.
- To check it yourself: open the browser developer tools (F12), open the Network tab, convert a file, and look for any request that carries your image. You will see none.
Frequently asked questions
What happens to transparency?
It is filled with your chosen background colour. White is the default.
Why does text look fuzzy afterwards?
JPG compression blurs hard edges. Use a higher quality or keep PNG for text.
Will the JPG always be smaller?
Usually for photos, not always for flat graphics. Compare the sizes shown.
Can I convert many PNG files?
Yes. Add them all and download individually or as a ZIP.
Is anything sent to a server?
No, conversion happens in your browser.
Can I change the background colour per file?
The background setting applies to the files in the current batch. Convert groups that need different colours separately.