On a Windows installation I see this:
PS C:\Users\user> ls C:\Users\user\.cache\codex-runtimes\codex-primary-runtime\dependencies\native\
Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 8/27/2026 10:09 AM git
d----- 6/16/2026 9:18 PM jxrlib
d----- 8/26/2026 7:37 PM libheif
d----- 6/17/2026 5:32 AM poppler
d----- 8/27/2026 10:09 AM powershell
So doesn't seem bundled with all installs at least.
Is this perhaps because the aim is to read Office documents and there are (maybe, I don't know for sure) default components within Windows that can do that?