If you use pyinstaller for package, use this command:
pyinstaller --window --name=PDFTools -i y12.ico main.py --paths C:\Windows\System32\downlevel
Add an ico file to avoid some anti-virus' alert, such as 360, Tencent
Add --paths to let your exe file be compatibility with win 7 when you built it on win 10
The icon is from https://sc.chinaz.com/tubiao/210125547220.htm