Windows Journal
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JNT is the native format of Windows Journal, a notetaking application created by Microsoft for Windows operating systems starting with Windows XP. Due to security concerns Microsoft advise against using the format and have supplied a patch for removal of the application (https://support.microsoft.com/en-gb/help/3161102/update-for-windows-journal-component-removal). Microsoft also provide an update that re-installs a version of Windows Journal that highlights the security concerns (https://support.microsoft.com/en-us/help/3162655/windows-journal-application-for-windows). A JTP is a Windows Journal Template file, however this appears to be structurally identical to a JNT file.
Identify it
| Extensions | .jnt.jtp |
|---|---|
| MIME types | application/octet-stream |
| Signatures | 4e422a at byte 0 (File Formats Wiki)4e422a00 at byte 0 (Windows Journal) |
| PRONOM | fmt/1051 |
| Wikidata | Q50562863 |
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0Sources
From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.