The quickest way to convert JPG to PNG

You can convert a JPG to a PNG using free tools built into Windows or Mac, or through a web browser without installing anything. The simplest route depends on what device you have and whether you want to convert one image or many at once.

On Windows, you can use the built-in Photos app. On Mac, Preview handles the conversion in seconds. If you prefer not to install software, a web converter like CloudConvert or Zamzar works from any browser — you upload the JPG, choose PNG as the output format, and download the result.

The conversion itself takes less than a minute. The main difference between JPG and PNG is that PNG supports transparent backgrounds and compresses without losing detail, while JPG is smaller but loses some image quality. After conversion, your PNG file will be slightly larger than the original JPG.

Key Takeaways

  • Windows users can convert JPG to PNG using the Photos app by opening the image, clicking the three dots menu, selecting "Edit," and saving as PNG.
  • Mac users can open a JPG in Preview, go to File > Export As, change the format dropdown to PNG, and click Save.
  • Web-based converters like CloudConvert work on any device and require no software installation — just upload, select PNG format, and download.
  • PNG files are typically larger than JPG files because PNG uses lossless compression, meaning no image detail is discarded during conversion.

Convert JPG to PNG on Windows using Photos

The Photos app comes built into Windows 10 and Windows 11, so you do not need to install anything. Open the JPG file you want to convert by right-clicking it, selecting "Open with," and choosing Photos from the list.

Once the image opens, click the three dots menu in the top right corner of the Photos window. Select "Edit" from the dropdown. In the editing screen, click the three dots menu again and look for "Save as" or "Save a copy." A dialog box will appear asking you to choose a file format — click the dropdown that currently shows "JPEG" and select "PNG" instead.

Type a new filename if you want to keep the original JPG, or use the same name to replace it. Click "Save" and Windows will create a PNG version of your image in the same folder. The original JPG remains unchanged unless you specifically deleted it.

Convert JPG to PNG on Mac using Preview

Preview is the default image viewer on Mac and can convert formats without any extra steps. Find your JPG file in Finder, right-click it, and select "Open With" > "Preview."

Once the image opens in Preview, click "File" in the menu bar at the top of the screen. Select "Export As" from the dropdown. A save dialog will appear with a dropdown menu labeled "Format" — this currently shows "JPEG." Click that dropdown and select "PNG" from the list.

Choose where you want to save the PNG file and type a filename. Click "Save" and Preview will create the PNG version. Your original JPG stays in place. If you want to replace the JPG entirely, you can delete it after confirming the PNG looks correct.

Use a web converter if you do not want to install software

Web-based converters work on Windows, Mac, or any device with a browser. CloudConvert and Zamzar are two common options that handle JPG to PNG conversion without requiring you to download or install anything.

Go to CloudConvert.com or Zamzar.com in your browser. Look for a button labeled "Select File" or "Upload File" and click it to choose your JPG from your computer. The converter will show you a dropdown menu for the output format — select PNG. Then click "Convert" or "Start Conversion."

The conversion usually takes 10 to 30 seconds. When it finishes, a "Download" button appears. Click it to save the PNG file to your computer. Web converters store your files temporarily and delete them after a few hours, so your images are not kept on their servers long-term.

Batch convert multiple JPGs to PNG at once

If you have many JPG files to convert, doing them one at a time takes too long. Windows users can use a free tool called XnConvert, which converts dozens of images in one operation. Mac users can use a similar tool called ImageMagick, though it requires using the Terminal application.

For Windows, download XnConvert from the XnConvert website, install it, and open the program. Click "Add Files" and select all the JPG files you want to convert. In the "Output" section on the right side, change the format from JPG to PNG. Click "Convert" and XnConvert will process all your images at once, saving them to a folder you specify.

If you prefer not to install software, some web converters like CloudConvert allow you to upload multiple files at once. Upload all your JPGs, set the output format to PNG, and click Convert. The site will process them all and let you download them as a single ZIP file containing all the converted PNGs.

Why your PNG file is larger than the original JPG

JPG uses lossy compression, which means it removes some image data to make the file smaller. You usually cannot see the difference, but the quality is technically lower. PNG uses lossless compression, which keeps all the original image detail but results in a larger file size.

For photographs, this difference is usually not noticeable to the human eye. For images with text, graphics, or areas of solid color, PNG looks sharper because it does not discard any information. The trade-off is that a PNG version of the same image will be 2 to 5 times larger than the JPG version.

If file size matters — for example, if you are uploading images to a website — you may want to keep using JPG for photographs. Use PNG when you need a transparent background, when the image contains text or graphics, or when you need the highest possible quality.

What to do if the conversion does not work

If your JPG file will not open in Photos or Preview, the file may be corrupted or the filename extension may be wrong. Try renaming the file to make sure it ends in .jpg (not .jpeg or .JPG), then try opening it again.

If a web converter shows an error, try uploading the file again or switching to a different converter. Some converters have file size limits — if your JPG is very large (over 50 MB), a desktop tool like XnConvert will work better than a web converter.

If the converted PNG looks blurry or distorted, the original JPG file may be damaged. Try converting a different JPG to test whether the problem is with your tool or with the specific file. If other JPGs convert fine, the original file is likely corrupted and cannot be recovered through conversion.

Frequently Asked Questions

Will converting JPG to PNG make my image look different?

No. PNG and JPG both display the same image data on screen. The difference is in how they store that data. PNG keeps all the detail, while JPG discards some to save space. Since the JPG already discarded information, converting it to PNG will not restore what was lost — the image will look identical to how it looked as a JPG.

Can I convert PNG back to JPG?

Yes, using the same methods in reverse. In Windows Photos, open the PNG and save it as JPEG. In Mac Preview, open the PNG and export it as JPEG. Web converters work both directions too. However, converting PNG to JPG will make the file smaller but may reduce quality if the PNG had a transparent background, since JPG does not support transparency.

What if I need to convert hundreds of images?

Use a batch converter like XnConvert for Windows or a web service that accepts multiple uploads. Batch converters process all your images at once instead of one by one, saving hours of time. Some web converters have limits on how many files you can upload at once, so check their site before starting.

Do I need to pay for a converter?

No. Windows Photos, Mac Preview, and web converters like CloudConvert and Zamzar are all free. Desktop batch converters like XnConvert are also free. Some web converters offer paid plans for faster processing or higher file size limits, but the free versions work fine for most people.

Will the PNG file work everywhere the JPG worked?

Almost everywhere. PNG is supported by all modern browsers, email clients, and image viewers. The only exception is very old software or devices — if you are using something from before 2005, it might not recognize PNG. For anything made in the last 15 years, PNG works just as well as JPG.