| Extension | File Description |
| .IJE | Uncommon Files |
| .IJF | Uncommon Files |
| .IJG | Uncommon Files |
| .IJH | Uncommon Files |
| .IJI | Uncommon Files |
| .IJJ | Uncommon Files |
| .IJK | Uncommon Files |
| .IJL | Uncommon Files |
| .IJM | Uncommon Files |
| .IJN | Uncommon Files |
| .IJO | Uncommon Files |
| .IJP | Uncommon Files |
| .IJQ | Uncommon Files |
| .IJR | Uncommon Files |
| .IJS | Uncommon Files |
| .IJT | Uncommon Files |
| .IJU | Uncommon Files |
| .IJV | Uncommon Files |
| .IJW | Uncommon Files |
| .IJX | Uncommon Files |
| .IJY | Uncommon Files |
| .IJZ | Uncommon Files |
| .IK | Uncommon Files |
| .IK0 | Uncommon Files |
| .IK1 | Uncommon Files |
| .IK2 | Uncommon Files |
| .IK3 | Uncommon Files |
| .IK4 | Uncommon Files |
| .IK5 | Uncommon Files |
| .IK6 | Uncommon Files |
| .IK7 | Uncommon Files |
| .IK8 | Uncommon Files |
| .IK9 | Uncommon Files |
| .IKA | Uncommon Files |
| .IKB | Uncommon Files |
| .IKC | Uncommon Files |
| .IKD | Uncommon Files |
| .IKE | Uncommon Files |
| .IKF | Uncommon Files |
| .IKG | Uncommon Files |
| .IKH | Uncommon Files |
| .IKI | Uncommon Files |
| .IKJ | Uncommon Files |
| .IKK | Uncommon Files |
| .IKL | Uncommon Files |
| .IKLAX | Uncommon Files |
| .IKM | Uncommon Files |
| .IKN | Uncommon Files |
| .IKO | Uncommon Files |
| .IKP | Uncommon Files |
| .IKQ | Uncommon Files |
| .IKR | Uncommon Files |
| .IKS | Uncommon Files |
| .IKT | Uncommon Files |
| .IKU | Uncommon Files |
| .IKV | Uncommon Files |
| .IKW | Uncommon Files |
| .IKX | Uncommon Files |
| .IKY | Uncommon Files |
| .IKZ | Uncommon Files |
| .IL | Uncommon Files |
| .IL0 | Uncommon Files |
| .IL1 | Uncommon Files |
| .IL2 | Uncommon Files |
| .IL3 | Uncommon Files |
| .IL4 | Uncommon Files |
| .IL5 | Uncommon Files |
| .IL6 | Uncommon Files |
| .IL7 | Uncommon Files |
| .IL8 | Uncommon Files |
| .IL9 | Uncommon Files |
| .ILA | Uncommon Files |
| .ILB | Uncommon Files |
| .ILBM | Raster Image Files |
| .ILC | Uncommon Files |
| Extension | File Description |
| .ILD | Uncommon Files |
| .ILE | Uncommon Files |
| .ILF | Uncommon Files |
| .ILG | Uncommon Files |
| .ILH | Uncommon Files |
| .ILHT | Uncommon Files |
| .ILI | Uncommon Files |
| .ILJ | Uncommon Files |
| .ILK | Developer Files |
| .ILL | Uncommon Files |
| .ILM | Uncommon Files |
| .ILN | Uncommon Files |
| .ILO | Uncommon Files |
| .ILP | Uncommon Files |
| .ILPLOPTION | Uncommon Files |
| .ILPLVOUCHE | Uncommon Files |
| .ILQ | Uncommon Files |
| .ILR | Uncommon Files |
| .ILS | Uncommon Files |
| .ILSR | Uncommon Files |
| .ILT | Uncommon Files |
| .ILU | Uncommon Files |
| .ILV | Uncommon Files |
| .ILVG | Uncommon Files |
| .ILW | Uncommon Files |
| .ILX | Uncommon Files |
| .ILY | Uncommon Files |
| .ILZ | Uncommon Files |
| .IM | Uncommon Files |
| .IM0 | Uncommon Files |
| .IM04 | Uncommon Files |
| .IM1 | Uncommon Files |
| .IM2 | Uncommon Files |
| .IM24 | Uncommon Files |
| .IM3 | Uncommon Files |
| .IM30 | Uncommon Files |
| .IM32 | Uncommon Files |
| .IM4 | Uncommon Files |
| .IM5 | Uncommon Files |
| .IM6 | Uncommon Files |
| .IM7 | Uncommon Files |
| .IM8 | Uncommon Files |
| .IM9 | Uncommon Files |
| .IM? | Disk Image Files |
| .IMA | Disk Image Files |
| .IMA4 | Uncommon Files |
| .IMAGE | Data Files |
| .IMAGEMAP | Web Files |
| .IMAGINE | Uncommon Files |
| .IMAKE | Uncommon Files |
| .IMAP | Web Files |
| .IMB | Uncommon Files |
| .IMC | Uncommon Files |
| .IMD | GIS Files |
| .IME | Uncommon Files |
| .IMELODY | Uncommon Files |
| .IMESHDEF | Uncommon Files |
| .IMF | Audio Files |
| .IMG | Disk Image Files |
| .IMG3 | System Files |
| .IMGSAO | Uncommon Files |
| .IMH | Uncommon Files |
| .IMI | GIS Files |
| .IMJ | Raster Image Files |
| .IMK | Uncommon Files |
| .IML | Developer Files |
| .IMM | Uncommon Files |
| .IMN | Uncommon Files |
| .IMO | Uncommon Files |
| .IMOVIEPROJ | Video Files |
| .IMP | Audio Files |
| .IMPD | Uncommon Files |
| .IMPLEMENT | Uncommon Files |
| .IMQ | Uncommon Files |
| .IMR | Data Files |
