Tips for Dear Windows Users

When you download Star Watermark or Star PDF Watermark for Windows, you may receive the following message:

Windows protected your PC

Windows SmartScreen prevented an unrecognized app from starting. Running this app might put your PC at risk.

That's because we did not purchase a digital signature certificate for this little software, and a digital signing certificate would cost several hundred dollars a year, which is a bit expensive for us.

The warning message you receive does not mean that our software is insecure, just because we did not purchase a digital signature certificate. We guarantee that our Star Watermrk and Star PDF Watermark windows are 100% safe and clean.

Thank you for your understanding.


When you receive SmartScreen preventing message:

windows smartscreen popup risk message

If you receive message as above, please click "More info", then please click "Run anyway" as below:

windows smartscreen popup risk message-run anyway

When you receive User Account Control (UAC) preventing message:

windows user account control popup unknown publisher message

If you receive message as above, please click "Yes" to start Star Watermark Program.