Digital photos and pictures come in different file formats, such as PNG, JPG, BMP, GIF, JPE, JPEG, TIF. PNG, JPG and JPEG are the most popular image file formats used by most digital cameras and mobile phones. For example, Samsung Galaxy phones will save your captured photos in JPEG format,
Apple iPhone takes pictures in PNG format. (Update Jan 2018: since iOS 11, camera photos on iPhone are saved in HEIC format.) They are able to save high quality images without creating large files, thus they take less storage space on your device and easier to be shared and transferred. Sometimes however we may need to manually change the photo’s original file type. For example, you may want to convert HEIC to JPG, JPEG, convert PNG to JPG, change PNG to GIF. iPhone users can follow this guide to alter photo or image file types on iPhone using a third party editor. If you want to do this on your Windows computer, you can follow below steps.
How to change image file format using Paint in Windows 10?
Luckily Windows comes with the easy to use yet free image editor, the Microsoft Paint app, we can use to convert photo types or formats on our computer. If your source photos is saved on your mobile phone, you can connect up your phone to computer and change image format on the computer easily.
Paint is still a built-in app of Windows 10. To open Paint on Windows 10 PC, type “paint“ in the search box on the taskbar right to the classic Start menu, and then select Paint from the list of results. To find the MS Paint app in Windows 10, you can also click Start menu in Windows 10, then choose All Apps >> W >> Windows Accessories >> Paint.
Once MS Paint is launched on your Windows 10 PC, click File >> Open, then find and open the source image you like to change its format. Or you can simply press CTR+O on the keyboard to quickly open the Open File dialogue to import photos to Paint app in Windows 10. After that you can optionally edit the image file, such as resize photos in Windows 10, crop images, rotate photos in Windows 10, etc. To convert photo type or file format to a different one, click the File menu >> Save As, then choose your target image type or format, such as PNG, JPEG, GIF, BMP, etc.
Generally speaking, BMP picture files can save any kind of pictures in high quality and use it on your computer. PNG pictures can save high quality photos and drawing and use them on both your computer and the web. JPEG image files save photos with good quality that can be used on your computer, in email or on the web. GIF pictures save simple drawing with lower quality and compact size and ideal for the use in emails or on the web. You can convert any imported images from their source file formats to any other picture types as specified above. Other than that, there are more image types and formats available for your choice. Choose “Other Formats” item from the “Save as” menu to find and select more possible file types.
Update Jan 2018: this article was originally published in 2016. In this update, the new feature of camera photos in iOS 11 was reflected.