How to Add a Favicon.ico Icon to Your WordPress Website
What is a favicon.ico icon? A favicon.ico, also known as a website icon, is visible at the top of the browser when you visit a site. Adding this icon makes your website more personalized, increases its appeal, and leaves a deeper impression on users. If you haven't added a website icon yet, give it a try.

1. Prepare the Icon
Find an image you like and use a relevant image editing tool to adjust the pixel dimensions to 16×16 or 32×32. For clearer display, it is recommended to choose 32×32 pixels. Change the file extension to .ico and name the file favicon. The complete filename should be favicon.ico.
2. Upload the File
Once the icon is created, upload the favicon.ico file to the root directory of your WordPress website.
3. Manual Code Insertion (If Necessary)
If the above method does not work, your hosting provider might not support automatic detection. In this case, you need to edit the header.php file in the WordPress backend under Appearance > Editor. Add the following two lines of code between the <head> and </head> tags:
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
<link rel="Bookmark" href="favicon.ico" />
After saving, clear your browser cache or try switching to a different browser. If some browsers do not display the icon immediately, simply wait for a short period. Additionally, you can try using an online favicon.ico generator like Bitbug for assistance.