Font Redate (Java) 3.0

FontRedate is a Java 1.4 application to read internal dates from OpenType, PostScript, or TrueType font files, and to change the file modification dates to match. The file contents are not changed, only the date in the system file directory. Internal font dates may or may not be accurate; many fonts are created and later edited without setting the date properly. Times may differ from what you expect depending upon your time zone, and will usually agree with what the Microsoft Font Properties Extension shows in its Version tab for OTF/TTC/TTF files, plus or minus daylight saving time. Dates can not and will not be changed for read-only files, which is a restriction imposed by the Java run-time, not the operating system.

OpenType fonts (*.OTF), TrueType fonts (*.TTF), and TrueType collections (*.TTC) actually have very similar internal formats and are processed together. All three of these use a single file for each font. PostScript fonts can have multiple files (*.AFM, *.INF, *.PFB, *.PFM, etc). For PostScript, an attempt is made to extract the internal date from *.PFA or *.PFB files, and if that works, then the file directory dates are changed for all files with the same root name and one of the alternate file types. This naming convention does not apply to font files on an Apple Macintosh, so use caution with Mac fonts!