WOFF 2.0 is the successor to the original WOFF format, offering significantly better compression (averaging 30% smaller files). It uses the Brotli compression algorithm to reduce font file sizes even further, which translates to faster page load times and reduced bandwidth usage for mobile users. WOFF2 is the current gold standard for web typography. Sample WOFF2 files are used to test modern web optimization techniques. Developers use them to verify that browsers prioritize the loading of the smaller WOFF2 format over older formats. They are also used to test the efficiency of font delivery pipelines and to validate that the Brotli decoding implementation in the browser or server is functioning correctly.