Mobile application is a big need of this area and hundred of applications are being launched on daily basis. There are different mobile platforms but most famous are iPhone and Android. More than 90% people are using iPhone and Android. So mobile developers and designer's demand is increasing day by day.
If you have designed custom application and design will remain same on iPhone and android then you just need to slice only for large resolution device like 6 plus. Just create 4 folders with following names 3x, 2x, 1x and 4s. Once your slicing is done for 6 Plus just keep it in 3X folder. Now create batch action in Photoshop and convert all 3x slicing into following percentage "66%" and save it into 2x folder. For Photoshop action watch my this video https://youtu.be/1idh3Mi71yM. Now you have to repeat with all remaining resolutions 2x, 1x and 4s.
For Android you have to create following folders XXXHDPI, XXHDPI, XHDPI and HDPI. Actually these resolutions cover almost all Android devices. For XXXHDPI you can cope 6 plus slicing as it is no need to change but splash sizes of each screen will be different you can't create them with action.
Below I am going to mention iPhone and Android devices sizes and slicing percentages. For slicing you have to follow same pattern as for iPhone.
How to change size and dimensions of multiple images within minutes is my today's topic. As you know now a days personal and business websites are need of everyone. Specially eCommerce websites have huge databases with a big number of images.
So now I am going to teach you a perfect and quick way to resize your images. For instance, you have a big number of images and you want all of them to resize with same width or height. Go to Adobe Photoshop and open action panel from the windows menu. There you will find a few action folders in default just ignore them for now. and click on "create new set" icon from the bottom of actions panel. You can choose a name for this set, now click on "create new action". Once you clicked on create new action your action recording will be started. Now just open one image from the images folder and resize it as you want and save it in a new folder somewhere. Close your file and click on stop icon in actions panel.
You action has been recorded and now its a time to apply on all images.
Now all of your images will be open and will be saved at their destination after resizing automatically.
How to change/swap face in Photoshop.
Now start brushing on the image but keep in mind at the bottom of tools, colors should be black and white.