PNG to JPG

What happens when you convert PNG to JPG

Your PNG is redrawn on a canvas at its original width and height, then saved again as a JPG with the quality you choose. Two things change in that step.

• Compression becomes lossy. PNG stores every pixel exactly. JPG throws away fine detail the eye is unlikely to notice, which is why the file gets so much smaller. (MDN (opens in new tab))
• Transparency is removed. JPEG has no alpha channel, so it has no way to store a see-through pixel. (MDN (opens in new tab))

The tool handles the second point for you: it paints the whole image area with the background colour you pick (white by default) and draws your PNG on top. Fully transparent areas take that colour. Soft edges and shadows that were partly transparent blend into it, which is why picking the right colour matters.

How to use the PNG to JPG converter

1. Drop one or more PNG files into the box above, or click browse. Only PNG files are accepted here.
2. Move the Quality slider. It runs from 10% to 100% and starts at 90%.
3. Pick a Background (for transparency) colour. Leave it white for documents and forms, or match the page or slide the image will sit on.
4. The JPG appears with its size in pixels and KB. Change any setting and it converts again on its own.
5. Click Download. With two or more files, use Download all (ZIP) to get them in one go.

Real results from our test

We ran three different PNGs through this tool on 19 October 2026 in a Chromium browser. Sizes can shift slightly in other browsers, because each browser ships its own JPG encoder.

The logo result surprises most people. PNG compresses large areas of one flat colour very well, while JPG works in small blocks and spends bytes on every edge. For logos, icons and simple graphics, a JPG can end up larger than the PNG you started with.

At 60% the same image dropped to 59.4 KB. Below about 70%, look closely at sky, skin and text, since that is where blocky patches and halos show up first.

Which quality setting to pick

If a form or portal sets an exact KB limit, the image resizer has a target size box that finds the highest quality under your limit for you.

When to convert PNG to JPG, and when not to

Convert when the PNG is a photo, a scanned page or a screenshot full of gradients and you need a smaller file. Many Indian exam and government portals accept only JPG or JPEG uploads, so a PNG photo or signature often has to be converted before you can submit. Check the exact format and size in the official notification before you upload.

Keep the PNG for logos, icons, line drawings, charts and anything that needs a transparent background. Converting those gives you a bigger or blurrier file and no benefit.

PNG vs JPG at a glance

Limitations

• No transparency in the output: this is a limit of the JPG format itself. If you need a see-through background, keep the PNG or use WebP in the image converter.
• Same pixel size: the JPG keeps the PNG’s width and height. To make it smaller in pixels, use the image resizer or the bulk image resizer.
• Metadata is not copied: text notes and other extra data stored inside the PNG are not carried into the JPG.
• Browser memory: very large images can hit your browser’s canvas size limit. The tool shows an error if that happens.

Key facts

• PNG is defined as a format for the lossless storage of raster images. The current version is the Third Edition, a W3C Recommendation published on 24 June 2025. (W3C (opens in new tab))
• In PNG, an alpha value of zero means fully transparent. (W3C (opens in new tab))
• JPEG is the most widely used lossy format for still images and does not support an alpha channel. (MDN (opens in new tab))
• Browsers save canvas images to JPG with a quality value between 0 and 1. This tool maps its 10% to 100% slider onto that value. (MDN (opens in new tab))