"What da font" likely refers to "WhatTheFont," a popular font identification tool and app. WhatTheFont allows users to identify fonts by uploading an image or taking a photo of text with a font they want to recognize. The tool uses AI to match the font in the image with its database and provides a list of similar fonts along with their names. Users can also type out words in the identified fonts to test how they look. WhatTheFont is widely used by designers, typographers, crafters, and anyone interested in typography to quickly learn the name of a font seen in a design or image. It's available as a mobile app on iOS and Android and can be accessed online. The tool also offers font suggestions and inspiration for design projects. Another related tool is WhatFont, a browser extension that helps users identify fonts on web pages simply by hovering over text. For downloading fonts, a popular source is DaFont, an archive of free and shareware fonts available for various uses. In summary:

• "WhatTheFont" is a font recognition app/tool for identifying fonts from images.
• "WhatFont" is a browser extension for identifying fonts on websites.
• "DaFont" is a site to browse and download fonts.

If you want to identify a font you see or have an image of, you can use WhatTheFont by uploading the image. For finding fonts used on websites, WhatFont browser extension works well. To download fonts for use, DaFont is a good resource. Let me know if you want guidance on using any of these tools or want font recommendations! This info is based on current popular font tools and resources.