About saving images and file formats

After you edit an image in the Editor, you need to save it, or you’ll lose your work. To ensure that all the image data is preserved, save regular images in Photoshop (PSD) format. Multiple-page creations are always saved in Photo Creations (PSE) format. These formats don’t compress your image data.

Your digital camera may save photos in JPEG format, but it’s better to use the PSD format rather than resave a photo in JPEG format unless you are ready to share it or use it on a web page. Each time you save in JPEG format, the image data is compressed, potentially causing some data to be lost. You may start to notice reduced image quality after saving the file as a JPEG 2‑3 times. The disadvantage of saving in PSD format is that the file size will increase significantly because the file is not compressed.

Photoshop Elements can save images in several file formats, depending on how you plan to use it. If you are working with web images, the Save For Web command provides many options for optimizing images. If you need to convert several images to the same file format, or the same size and resolution, use the Process Multiple Files command.

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