Postman - Create a Linux launcher icon

Create a file named Postman.desktop under ~/.local/share/applications with below content:

[Desktop Entry]
Type=Application
Version=1.0
Name=Postman
Comment=Supercharge your API workflow
Icon=/home/zzh/Downloads/sfw/Postman/app/resources/app/assets/icon.png
Exec="/home/zzh/Downloads/sfw/Postman/Postman"
Terminal=false

After saving the file, if you can't find the Postman icon in Show Applications, manually run /home/zzh/Downloads/sfw/Postman/Postman, then right click the appeared Postman icon and select 'Add to Favorites'.