| Extension | File Description |
| .JO1 | Uncommon Files |
| .JO2 | Uncommon Files |
| .JO3 | Uncommon Files |
| .JO4 | Uncommon Files |
| .JO5 | Uncommon Files |
| .JO6 | Uncommon Files |
| .JO7 | Uncommon Files |
| .JO8 | Uncommon Files |
| .JO9 | Uncommon Files |
| .JOA | Uncommon Files |
| .JOB | CAD Files |
| .JOBOPTIONS | Data Files |
| .JOBS | Uncommon Files |
| .JOC | Uncommon Files |
| .JOCL | Uncommon Files |
| .JOD | Uncommon Files |
| .JODA | Data Files |
| .JOE | Uncommon Files |
| .JOF | Uncommon Files |
| .JOG | Uncommon Files |
| .JOH | Uncommon Files |
| .JOI | Uncommon Files |
| .JOINED | Data Files |
| .JOJ | Uncommon Files |
| .JOK | Uncommon Files |
| .JOKE | Uncommon Files |
| .JOL | Uncommon Files |
| .JOM | Uncommon Files |
| .JON | Uncommon Files |
| .JONES | Uncommon Files |
| .JOO | Uncommon Files |
| .JOP | Uncommon Files |
| .JOQ | Uncommon Files |
| .JOR | Uncommon Files |
| .JOS | Uncommon Files |
| .JOT | Uncommon Files |
| .JOU | Uncommon Files |
| .JOURNAL | Uncommon Files |
| .JOV | Uncommon Files |
| .JOW | Uncommon Files |
| .JOX | Uncommon Files |
| .JOY | Uncommon Files |
| .JOZ | Uncommon Files |
| .JP0 | Uncommon Files |
| .JP1 | Uncommon Files |
| .JP2 | Raster Image Files |
| .JP3 | Uncommon Files |
| .JP4 | Uncommon Files |
| .JP5 | Uncommon Files |
| .JP6 | Uncommon Files |
| .JP7 | Uncommon Files |
| .JP8 | Uncommon Files |
| .JP9 | Uncommon Files |
| .JPA | Uncommon Files |
| .JPB | Uncommon Files |
| .JPC | Raster Image Files |
| .JPD | Uncommon Files |
| .JPE | Raster Image Files |
| .JPEG | Raster Image Files |
| .JPEGENX | Uncommon Files |
| .JPF | Raster Image Files |
| .JPG | Raster Image Files |
| .JPG2 | Raster Image Files |
| .JPGENX | Uncommon Files |
| .JPGM | Raster Image Files |
| .JPGV | Video Files |
| .JPG_T | Uncommon Files |
| .JPH | Data Files |
| .JPI | Uncommon Files |
| .JPJ | Uncommon Files |
| .JPK | Uncommon Files |
| .JPL | Uncommon Files |
| .JPM | Uncommon Files |
| .JPN | System Files |
| .JPO | Uncommon Files |
| Extension | File Description |
| .JPOW | Uncommon Files |
| .JPP | Uncommon Files |
| .JPQ | Uncommon Files |
| .JPR | Developer Files |
| .JPS | Raster Image Files |
| .JPT | Uncommon Files |
| .JPU | Uncommon Files |
| .JPV | Uncommon Files |
| .JPW | Uncommon Files |
| .JPX | Raster Image Files |
| .JPY | Uncommon Files |
| .JPZ | Uncommon Files |
| .JQ0 | Uncommon Files |
| .JQ1 | Uncommon Files |
| .JQ2 | Uncommon Files |
| .JQ3 | Uncommon Files |
| .JQ4 | Uncommon Files |
| .JQ5 | Uncommon Files |
| .JQ6 | Uncommon Files |
| .JQ7 | Uncommon Files |
| .JQ8 | Uncommon Files |
| .JQ9 | Uncommon Files |
| .JQA | Uncommon Files |
| .JQB | Uncommon Files |
| .JQC | Uncommon Files |
| .JQD | Uncommon Files |
| .JQE | Uncommon Files |
| .JQF | Uncommon Files |
| .JQG | Uncommon Files |
| .JQH | Uncommon Files |
| .JQI | Uncommon Files |
| .JQJ | Uncommon Files |
| .JQK | Uncommon Files |
| .JQL | Uncommon Files |
| .JQM | Uncommon Files |
| .JQN | Uncommon Files |
| .JQO | Uncommon Files |
| .JQP | Uncommon Files |
| .JQQ | Uncommon Files |
| .JQR | Uncommon Files |
| .JQS | Uncommon Files |
| .JQT | Uncommon Files |
| .JQU | Uncommon Files |
| .JQV | Uncommon Files |
| .JQW | Uncommon Files |
| .JQX | Uncommon Files |
| .JQY | Uncommon Files |
| .JQZ | Uncommon Files |
| .JR | Uncommon Files |
| .JR0 | Uncommon Files |
| .JR1 | Uncommon Files |
| .JR2 | Uncommon Files |
| .JR3 | Uncommon Files |
| .JR4 | Uncommon Files |
| .JR5 | Uncommon Files |
| .JR6 | Uncommon Files |
| .JR7 | Uncommon Files |
| .JR8 | Uncommon Files |
| .JR9 | Uncommon Files |
| .JRA | Uncommon Files |
| .JRB | Uncommon Files |
| .JRC | Uncommon Files |
| .JRD | Uncommon Files |
| .JRE | Uncommon Files |
| .JRF | Uncommon Files |
| .JRG | Uncommon Files |
| .JRH | Uncommon Files |
| .JRI | Uncommon Files |
| .JRJ | Uncommon Files |
| .JRK | Uncommon Files |
| .JRL | Uncommon Files |
| .JRM | Uncommon Files |
| .JRN | Uncommon Files |
| .JRO | Uncommon Files |
| .JRP | Uncommon Files |
