It is essential that you have a favicon (also known as a shortcut icon, website icon, tab icon, URL icon, or bookmark icon). This is typically square and 512 x 512 pixels. If you already have a good quality logo a favicon may be created using your original design.
If you don’t have a logo or a favicon I have a designer who will create a simple text / font design for a minimum charge of £60. Logos with text and images start from 100.
Examples of favicons: