WOFF (Web Open Font Format) and WOFF2 are compressed font formats designed specifically for usage on the web.

Compared to raw “.ttf” or “.otf” files, WOFF and WOFF2 are significantly smaller in size, which allows for much faster loading speeds and better performance on websites.

DIFFERENCES BETWEEN WOFF & WOFF2

• WOFF was introduced in 2009 and quickly became the standard for webfont delivery. It is supported by all major browsers, starting with Firefox, which was one of the first to implement it.
• WOFF2, introduced in 2012, provides even better compression and is now supported by all modern browsers, including Chrome, Firefox, Safari, and Edge.

Because of their balance between performance, licensing metadata, and broad compatibility, WOFF and especially WOFF2 are the primary formats used for webfonts today.