Hvad er JFPROJ-filformatet?
En .jfproj-fil er et projekt gemt af Microsoft Font Maker, en gratis Windows-app, der forvandler din håndskrift til en installerbar skrifttype. Navnet står for JSON Font Project, og filen er i virkeligheden almindelig .json-tekst, så du kan kigge ind i den med enhver teksteditor. Font Maker registrerer hvert bogstav, du tegner med en aktiv pen på en touchskærm, eller med en mus, hvis du ikke har en, og gemmer disse glyffer sammen med de eksempelsætninger, du har skrevet for at finjustere afstanden.
Inden i JSON-filen finder du de enkelte tegnformer, mellemrummene mellem bogstaver og ord samt den overordnede skrifttypestørrelse. .jfproj er den redigerbare arbejdskopi af skrifttypen. Det er ikke det færdige produkt, du installerer, og den giver kun mening for selve Font Maker.
Sikkerhed og tryghed
RISIKO: LOWA .jfproj is a plain-text JSON document with no executable code, macros or embedded binaries, so opening one cannot run anything on its own. The only realistic concern is a corrupted or hand-edited file failing to load in Font Maker. Treat unexpected files from unknown senders with normal caution, but the format itself carries no inherent malware risk.
Formatdetaljer
kort fortaltProgrammer der åbner JFPROJ-filer
Windows3 apps
Notepad
Indbygget Right-click the .jfproj, choose Open with Notepad, and read the JSON contents directly without any extra software. 
Microsoft Font Maker
Gratis Install Microsoft Font Maker from the Microsoft Store, choose Open project, and load the .jfproj to keep editing your handwriting font or export it to TTF. 
Visual Studio Code
Gratis Open the .jfproj in VS Code to inspect the raw JSON glyph and spacing data as plain text, since it cannot render the font itself. Tekniske detaljer
dyb specifikation| Encoding | UTF-8 / ASCII plain text |
| Byte order | N/A (text format) |
| Container | JSON object |
| Typical size | A few kilobytes to a few hundred kilobytes, depending on the number of glyphs recorded |
| Structure | A single JSON document that stores a handwriting-based font project. It holds the individual glyphs (character outlines) captured from pen or mouse input, the sample sentences the user wrote, and metadata such as inter-character spacing, word spacing and font size. Because it is plain JSON, it can be inspected in any text editor. |
| Integrity | None built in |
| Platforms | Windows 10, Windows 11 |
| Notes | Created and read exclusively by Microsoft Font Maker, a free UWP app from the Microsoft Store. The .jfproj file is the editable working copy; the finished font is exported separately as a TrueType .ttf file. Input can come from an active pen on a touchscreen or from a mouse. |
| Udgivet | 2018 |
| Specifikation | docs.fileformat.com |
JFPROJ-konverteringer
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