# yj > Convert between YAML, TOML, JSON, and HCL, preserving map order. > More information: . - Convert [y]AML to JSON (default) from `stdin` and write the result to `stdout`: `yj < {{file.yml}} -y` - Convert [t]OML to [y]AML: `yj < {{file.toml}} -ty` - Convert [j]SON to [t]OML with [i]ndentation: `yj < {{file.json}} -jti` - Convert H[c]L to [j]SON: `yj < {{file.hcl}} -cj` - Convert [y]AML to H[c]L ignoring inf/[n]aN conversion: `yj < {{file.yml}} -ycn` - Display [v]ersion: `yj -v`