PNG to JPG Converter

The controls are preset for PNG files going to JPEG. The only decisions left are quality and background color.

1. Drop your PNG files on the box, paste them, or click to choose. Batches are accepted, and one setting applies to every file in the run.
2. Keep Convert to on JPEG, which is already selected.
3. Leave Quality at 75 for a first attempt. Move it up if edges look soft or down if the file is still big.
4. Choose a color in Background for transparent areas (JPEG) if any of your PNGs have see-through parts. White is the default.
5. Press Convert images, read the size change under each thumbnail, and download the results.

JPEG was designed for photographs, where gradual changes of color hide its compression. PNG was designed for crisp graphics. Moving between them suits some pictures and spoils others.

Here is a worked illustration. A 2400 by 1600 pixel photo exported from an editor as PNG might weigh around 5.8 MB. Saved as JPG at quality 75, it could fall under 1 MB, a drop of more than 80 percent. The exact figure depends on the picture, and the tool reports the percentage for each file so you can judge for yourself.

If the text in a screenshot looks smudged after conversion, raise the quality to 90, or stay with PNG. A PNG that is only too big can be reduced with Compress PNG, which keeps the format.

Converting to JPG is a one-way trip. Once detail has been discarded, converting the JPG back to PNG will not return it, which is why it makes sense to keep the original PNG as your editing copy and treat the JPG as the version you send out.

A few practical points:

• Choose the background color before converting. Anti-aliased edges are blended with that color, so changing your mind later means starting again from the PNG.
• Upload limits are usually the reason people convert. If the JPG is still too big, try the reduce image size in KB page, which aims for a size such as 100 KB.
• Pixel dimensions are not changed here. Use the image resizer to make a picture smaller in width and height.
• Camera and location information is not copied into the new file.
• Photos that are already small gain little. A picture of a few hundred pixels converts quickly but rarely drops much in size.

To go in the other direction, for lossless re-saving, use JPG to PNG. The wider image converter also handles WebP. Conversion happens in your browser, so nothing is uploaded.

Suppose you have five product photos exported as PNG, each 1600 by 1200 pixels and about 3 MB. Together that is roughly 15 MB, more than many mailboxes will accept as one message. Here is a sensible way to handle it.

• Convert a single file at quality 75 and open it at full size. Check smooth areas such as backgrounds and skin or fabric textures.
• If it looks the same as the PNG, convert the other four at 75. If edges look rough, repeat with 85 first.
• Add up the new sizes. If each lands near 400 KB, the set comes to about 2 MB, a fraction of what you began with. These are example figures, so check yours in the results list.

When a number is stubbornly high, the picture itself is usually the cause, because busy detail such as foliage or fabric compresses poorly. In that case reduce the pixel size as well, using the image resizer.