JLS (an initialism of Jack the Lad Swing) were an English pop/R&B boy band consisting of members Jonathan Benjamin Gill, Marvin Humes, Aston Merrygold and Oritsé Williams, originally formed by Oritsé Williams. They initially signed to Tracklacers production company New Track City and then went on to become runners-up of the fifth series of the ITV reality talent show The X Factor in 2008, coming second to Alexandra Burke. Following their appearance on The X Factor, JLS signed to Epic Records. Their first two singles "Beat Again" and "Everybody in Love" both went to number one on the UK Singles Chart. The band's self-titled debut album was released on 9 November 2009, and has since sold over 1 million copies in the UK. JLS won the awards for British Breakthrough and British Single ("Beat Again") at the 2010 BRIT Awards. They also won several awards at the MOBO Awards for Best song for "Beat Again" in 2009 and also Best Newcomer in the same year. In 2010 they won the MOBO Awards for Best UK act and Best Album. They also went on to win their fifth MOBO in 2012 by winning Best Video for "Do You Feel What I Feel?". They won the title of the UK's hardest-working band for two constitutive years, in 2011 and 2012.

Lossless JPEG is a 1993 addition to JPEG standard by the Joint Photographic Experts Group to enable lossless compression. However, it might be used as an umbrella term to refer to all lossless compression schemes developed by the Joint Photographic Expert group. They include JPEG 2000 and JPEG-LS.