---
title: kCTBaselineOffsetAttributeName
framework: coretext
role: symbol
role_heading: Global Variable
path: coretext/kctbaselineoffsetattributename
---

# kCTBaselineOffsetAttributeName

Vertical offset for text position.

## Declaration

```swift
let kCTBaselineOffsetAttributeName: CFString
```

## Discussion

Discussion The value of this attribute must be a CFNumber float. The default is standard positioning, following the baselines of the fonts used. The baseline offset attribute indicates how many points the characters should be shifted perpendicular to their baseline. For horizontal text, a positive baseline value indicates a shift above the text baseline, and a negative baseline value indicates a shift below the text baseline. For vertical text, a positive baseline value indicates a shift to the right of the text baseline, and a negative baseline value indicates a shift to the left of the text baseline. If this value is set to 0.0, no baseline shift will be performed. important: This attribute is different from baselineOffset. If you are writing code for TextKit, you need to use baselineOffset.

## See Also

### Constants

- [kCTCharacterShapeAttributeName](coretext/kctcharactershapeattributename.md)
- [kCTFontAttributeName](coretext/kctfontattributename.md)
- [kCTKernAttributeName](coretext/kctkernattributename.md)
- [kCTLigatureAttributeName](coretext/kctligatureattributename.md)
- [kCTForegroundColorAttributeName](coretext/kctforegroundcolorattributename.md)
- [kCTForegroundColorFromContextAttributeName](coretext/kctforegroundcolorfromcontextattributename.md)
- [kCTParagraphStyleAttributeName](coretext/kctparagraphstyleattributename.md)
- [kCTStrokeWidthAttributeName](coretext/kctstrokewidthattributename.md)
- [kCTStrokeColorAttributeName](coretext/kctstrokecolorattributename.md)
- [kCTSuperscriptAttributeName](coretext/kctsuperscriptattributename.md)
- [kCTUnderlineColorAttributeName](coretext/kctunderlinecolorattributename.md)
- [kCTUnderlineStyleAttributeName](coretext/kctunderlinestyleattributename.md)
- [kCTVerticalFormsAttributeName](coretext/kctverticalformsattributename.md)
- [kCTGlyphInfoAttributeName](coretext/kctglyphinfoattributename.md)
- [kCTRunDelegateAttributeName](coretext/kctrundelegateattributename.md)