In the Properties windows of all pictures in your document, under Resolution and Quality, choose the photo tab under “Picture Settings. 11. Once all pictures in your document have been adjusted, click Apply Changes.‧ If a picture has the same resolution or quality as another picture in your document, the picture will be copied instead of being resized. How to Reduce Photo File Size using Viva Zoom 14. In the Zoom options window, check the image quality setting (Photo Quality) under Resolution and Image Quality. 15. In the Picture tool window, click the Resize button. 16. In the Resizing picture window you'll see a preview where the image is reduced in size. Click Resize the preview and change the value of ‹¬ so that the actual size is smaller than the preview. 17. After the picture has been resized, your original picture and the changed version of it will be displayed. Check the ‹¬ in the Resizing picture box so that the original image still retains the size it had before resized. 18. Click OK, and it's done. How to Reduce JPG File Size using Google Photos 20. In the Google Photos app, tap Photos. 21. Tap Open and then find the JPG picture you want to enlarge. 22. Tap Open and select the picture in your library. 23. In the View menu, choose View in Google Photos. 24. Open the file, and then tap the thumbnail arrow to the left of the image. How to Reduce JPG File Size Using Google Photos with Previews on iPhone 9. In the Google Photos app, tap the file that you want to crop and choose the picture to enlarge in the file preview. 10. Tap Previews, and then select the picture to enlarge. How to Reduce JPG File Size Using Google Photos with Photos for iCloud with Previews — Microsoft 13. Open iCloud in your web browser. 14. Tap the Photos app, and tap the photo you want to crop. 15. Tap the camera icon, and select the photo to enlarge. 16. See the image resized in the preview, tap the preview to enlarge the image. 17.