查看“︁SFNT”︁的源代码

{{Infobox
|name    = SFNT
|title   = SFNT
|header1 = 字體資料結構格式
|label1  =
|data1   = 
|header2 = 
|label2  = [[副檔名]]
|data2   = .ttf .cff .otf .aat .sil .woff .woff2
|header3 =
|label3  = [[互联网媒体类型|MIME Type]]
|data3   = {{unbulleted list|font/sfnt|application/font-sfnt (不再適用)}}<ref name="iana-media-types">{{cite web |url=https://www.iana.org/assignments/media-types/media-types.xhtml |title=Media Types |publisher=[[Internet Assigned Numbers Authority|IANA]] |date=2017-10-12 |accessdate=2017-10-17 |archive-date=2017-10-18 |archive-url=https://web.archive.org/web/20171018191839/http://www.iana.org/assignments/media-types/media-types.xhtml |dead-url=no }}</ref>
}}
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{{Infobox file format
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| extension              = .ttf .cff .otf .aat .sil<ref name="iana">{{cite web | url=https://www.iana.org/assignments/media-types/application/font-sfnt | title=Type name: application; Subtype name: font-sfnt|publisher=IANA | access-date=2016-06-09}}</ref>
| mime                   = {{unbulleted list|font/sfnt|application/font-sfnt (已停用)}}<ref name="iana-media-types">{{cite web |url=https://www.iana.org/assignments/media-types/media-types.xhtml |title=Media Types |publisher=[[Internet Assigned Numbers Authority|IANA]] |date=2017-10-12 |accessdate=2017-10-17}}</ref>
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'''SFNT'''是一套標準化的字體資料結構格式。許多常見的字體格式，例如[[PostScript]]、[[TrueType]]、[[OpenType]]、[[WOFF]]、[[Graphite|SIL Graphite]]<ref name="iana">{{cite web| url=https://www.iana.org/assignments/media-types/application/font-sfnt| title=Type name: application; Subtype name: font-sfnt| publisher=IANA| access-date=2016-06-09| archive-date=2016-06-25| archive-url=https://web.archive.org/web/20160625182623/http://www.iana.org/assignments/media-types/application/font-sfnt| dead-url=no}}</ref>等都使用其作為容器，提供各個字元標準化的定址表、資料結構等。該容器原先是由[[蘋果公司]]為了[[麥金塔電腦]]上的TrueType字體開發的<ref>{{Cite web
  | title = The 'sfnt' format
  | work = Apple Developer Connection
  | publisher = Apple
  | url = https://developer.apple.com/fonts/tools/tooldir/TrueEdit/Documentation/TE/TE1sfnt.html
  | archive-url = https://web.archive.org/web/20131023054643/https://developer.apple.com/fonts/tools/tooldir/TrueEdit/Documentation/TE/TE1sfnt.html
  | archive-date = 2013-10-23
  | accessdate = 2010-10-18
  | dead-url = no
  }}</ref>。SFNT的原意是''spline font''（[[樣條]]字體）或''scalable font''（可縮放的字體）；該縮寫則來自麥金塔電腦內部用來儲存字體資料的標籤名稱。

由於SFNT制定的特性，其定址以<math>16^4=65536</math>個字元為一個字元表（table）的極限。<ref name="AppleDev">{{Cite web|url=https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6.html#Directory|title=The TrueType Font File|accessdate=2018-12-06|author=|date=|publisher=Apple Developer|archive-date=2018-12-06|archive-url=https://web.archive.org/web/20181206002004/https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6.html#Directory|dead-url=no}}</ref><ref>{{Cite web|url=https://my.oschina.net/wolfcs/blog/140473|title=OpenType字库文件  - WolfCS的个人空间 - 开源中国|accessdate=2018-12-06|author=WolfCS|date=2013-06-25|publisher=开源中国|archive-date=2018-12-06|archive-url=https://web.archive.org/web/20181206001951/https://my.oschina.net/wolfcs/blog/140473|dead-url=no}}</ref>

==參考資料==
{{reflist}}
[[Category:字体格式]]
[[Category:字元集]]