First, we’ll need to open the photo in Photoshop. You can do this by dragging the photo file on top of the Photoshop window, or manually through File > Open.
Click the lock icon in the Layer tab to unlock the photo layer. If the layer is locked, you won't be able to delete your background to create the transparency effect.
The goal in this step is to determine which area of the photo will be erased to become transparent.
Use the lasso tool to select the background you want to remove. Click the Lasso icon from the tool tray or press L on your keyboard. Once the background is selected, press the delete key.
Congratulations—you’ve done great so far! It’s time to export your project. But which file format should we choose?
Not every file type supports background transparency. I usually choose PNG, but the following file types are the most commonly supported:
By default, Illustrator creates a solid white artboard in the background. This is helpful when creating artwork so you can see better, but you might not want it there when it's time to save the file.