Not all image formats supportTransparency of the image, so if you want to create a picture file containing invisible areas, you need to use an application that has the option to save the result of work in the desired formats.
The most common graphic editor used today to create and modify images is Adobe Photoshop - it certainly can save pictures with a transparent background.
Launch Adobe Photoshop and create a new one.The document of the size you need. To open the appropriate dialog, open the "File" section in the menu and select "Create" or simply press ctrl + n. Dimensions specify in the fields "Width" and "Height". Make sure that the "Transparent" drop-down list is selected in the "Background content" drop-down list, and then click the "OK" button.
Paste into the created document with a transparent backgroundYour picture. If it is stored in a file, open the same section of the "File" in the graphics editor menu and select the "Place" command. As a result, a window opens in which you need to find the desired file, highlight it and click the "Place" button. The picture will be placed in the center of the document and the transformation mode will be switched on immediately - you can move the image with the mouse or with the navigation keys. In addition, in this mode, you can change the size of the inserted picture, change its proportions and rotate.
Select the quality settings and select the formatSaved image. To do this, in the "File" section, select the "Save for Web and Devices" command or use the shift + ctrl + alt + s shortcut. First of all, select the saving format - two drop-down lists are located in the upper right corner of the window. Transparency supports gif and png, select one of the presets related to these formats. After that, using the settings placed in this window, choose the aspect ratio that suits you and the weight of the created file. The quality will be displayed in the preview image, and the weight will be below the left corner of this image. Then press the "Save" button.
Specify the name of the created file and the location of its saving in the next window and press the "Save" key again.