To add an HP printer to Wi-Fi, the most straightforward method is to use the **HP Smart app** on your smartphone or computer:

1. **Power on the printer** and make sure it has paper loaded.
2. Confirm your phone or computer is connected to the desired Wi-Fi network.
3. Download and install the **HP Smart app** (available for Windows, macOS, Android, iOS).
4. Open the HP Smart app and sign in or create an HP account.
5. The app will automatically detect your printer; if not, tap the “+” icon and select your printer.
6. Go to “Printer Settings” then “Network Setup”.
7. Choose your Wi-Fi network and enter the password.
8. Tap “Connect”. Your printer should now be connected to Wi-Fi and ready to print wirelessly.

Alternatively, you can use the **HP Printer Install Wizard** on your computer or connect via WPS (Wi-Fi Protected Setup) if supported by your router and printer[1][2][3].

Additional tips:
– If the Wi-Fi light on the printer is not blinking, press and hold the Wi-Fi and Cancel buttons simultaneously until it starts blinking to enter setup mode.
– After connecting, you can print a test page to verify the connection.
– Make sure your printer is within range of the Wi-Fi router for a stable connection[2][3].

This method works for most HP printers, including Deskjet, Envy, and LaserJet models, and is the recommended approach by HP.