| Extension | File Description |
| .JRQ | Uncommon Files |
| .JRR | Uncommon Files |
| .JRS | Uncommon Files |
| .JRT | Uncommon Files |
| .JRU | Uncommon Files |
| .JRV | Uncommon Files |
| .JRW | Uncommon Files |
| .JRX | Uncommon Files |
| .JRXML | Data Files |
| .JRY | Uncommon Files |
| .JRZ | Uncommon Files |
| .JS | Executable Files |
| .JS0 | Uncommon Files |
| .JS1 | Uncommon Files |
| .JS2 | Uncommon Files |
| .JS3 | Uncommon Files |
| .JS4 | Uncommon Files |
| .JS5 | Uncommon Files |
| .JS6 | Uncommon Files |
| .JS7 | Uncommon Files |
| .JS8 | Uncommon Files |
| .JS9 | Uncommon Files |
| .JSA | Uncommon Files |
| .JSB | Uncommon Files |
| .JSC | Uncommon Files |
| .JSCRIPT | Uncommon Files |
| .JSD | Uncommon Files |
| .JSDB | Uncommon Files |
| .JSE | Executable Files |
| .JSF | Settings Files |
| .JSFL | Developer Files |
| .JSG | Uncommon Files |
| .JSH | Developer Files |
| .JSI | Uncommon Files |
| .JSJ | Uncommon Files |
| .JSK | Uncommon Files |
| .JSL | Uncommon Files |
| .JSM | Uncommon Files |
| .JSML | Uncommon Files |
| .JSN | Uncommon Files |
| .JSO | Uncommon Files |
| .JSON | Web Files |
| .JSONML | Data Files |
| .JSP | Web Files |
| .JSP10 | Uncommon Files |
| .JSPA | Web Files |
| .JSPF | Developer Files |
| .JSQ | Uncommon Files |
| .JSR | Uncommon Files |
| .JSRC | Uncommon Files |
| .JSS | Web Files |
| .JST | Web Files |
| .JSU | Uncommon Files |
| .JSV | Uncommon Files |
| .JSW | Uncommon Files |
| .JSX | Executable Files |
| .JSY | Uncommon Files |
| .JSZ | Uncommon Files |
| .JT | CAD Files |
| .JT0 | Uncommon Files |
| .JT1 | Uncommon Files |
| .JT2 | Uncommon Files |
| .JT3 | Uncommon Files |
| .JT4 | Uncommon Files |
| .JT5 | Uncommon Files |
| .JT6 | Uncommon Files |
| .JT7 | Uncommon Files |
| .JT8 | Uncommon Files |
| .JT9 | Uncommon Files |
| .JTA | Uncommon Files |
| .JTB | Uncommon Files |
| .JTC | Uncommon Files |
| .JTD | Uncommon Files |
| .JTE | Uncommon Files |
| .JTF | Raster Image Files |
| Extension | File Description |
| .JTG | Uncommon Files |
| .JTH | Uncommon Files |
| .JTI | Uncommon Files |
| .JTIF | Uncommon Files |
| .JTJ | Uncommon Files |
| .JTK | Uncommon Files |
| .JTL | Uncommon Files |
| .JTM | Uncommon Files |
| .JTN | Uncommon Files |
| .JTO | Uncommon Files |
| .JTP | Page Layout Files |
| .JTQ | Uncommon Files |
| .JTR | Uncommon Files |
| .JTS | Uncommon Files |
| .JTT | Uncommon Files |
| .JTU | Uncommon Files |
| .JTV | Uncommon Files |
| .JTW | Uncommon Files |
| .JTX | Uncommon Files |
| .JTY | Uncommon Files |
| .JTZ | Uncommon Files |
| .JU0 | Uncommon Files |
| .JU1 | Uncommon Files |
| .JU2 | Uncommon Files |
| .JU3 | Uncommon Files |
| .JU4 | Uncommon Files |
| .JU5 | Uncommon Files |
| .JU6 | Uncommon Files |
| .JU7 | Uncommon Files |
| .JU8 | Uncommon Files |
| .JU9 | Uncommon Files |
| .JUA | Uncommon Files |
| .JUB | Uncommon Files |
| .JUC | Uncommon Files |
| .JUD | Uncommon Files |
| .JUDI | Uncommon Files |
| .JUDO | Uncommon Files |
| .JUE | Uncommon Files |
| .JUF | Uncommon Files |
| .JUG | Uncommon Files |
| .JUH | Uncommon Files |
| .JUI | Uncommon Files |
| .JUJ | Uncommon Files |
| .JUK | Uncommon Files |
| .JUL | Uncommon Files |
| .JUM | Uncommon Files |
| .JUMP | Uncommon Files |
| .JUMP1 | Uncommon Files |
| .JUN | Uncommon Files |
| .JUO | Uncommon Files |
| .JUP | Uncommon Files |
| .JUQ | Uncommon Files |
| .JUR | Uncommon Files |
| .JURL | Uncommon Files |
| .JUS | Uncommon Files |
| .JUST | Uncommon Files |
| .JUT | Uncommon Files |
| .JUU | Uncommon Files |
| .JUV | Uncommon Files |
| .JUW | Uncommon Files |
| .JUX | Uncommon Files |
| .JUY | Uncommon Files |
| .JUZ | Uncommon Files |
| .JV0 | Uncommon Files |
| .JV1 | Uncommon Files |
| .JV2 | Uncommon Files |
| .JV3 | Uncommon Files |
| .JV4 | Uncommon Files |
| .JV5 | Uncommon Files |
| .JV6 | Uncommon Files |
| .JV7 | Uncommon Files |
| .JV8 | Uncommon Files |
| .JV9 | Uncommon Files |
| .JVA | Uncommon Files |
| .JVB | Uncommon Files |
