Step 1: After installing Meitu Xiu Xiu software, double-click to open any picture in the file. Below the picture, you can see the toolbar at the bottom, and click "Back".
Step 2: Click "Back" to automatically return to the page edited by "Meitu Look". At this time, you will see that the software automatically selects only one picture.
Step 3: You use the shortcut key "ctrl+A" to select all the pictures.
Step 4: Then select "Batch Modify Size" in the window.
Step 5: Click "Modify Size in Batch" to open the following dialog box. You only need to enter a number between 1000-600 in Width, and finally select and save the Output Path. Click "OK" to get it done, which is very simple.