JP2 files: how to open and convert them

JPEG's technically-superior, commercially-stillborn successor. Lives on in archives and Digital Cinema.

What this site can do with JP2

  • Open and read: no — and we say so rather than pretend
  • Write and convert to: no honest browser encoder exists
  • Compression: lossy — a quality slider applies when encoding
  • Transparency: supported

No maintained browser-safe JPEG 2000 decoder; use TIFF or PNG for archival instead.