Photoshop
Type
About Type
Type (or text) in Photoshop is created as vector shapes on special type layers. A typeface or font is a collection of upper case characters, lower case characters, and symbols.
Type Structure
Some type-specific terms are used in this module. In order to understand how certain options work, a basic understanding of the structure of type is in order. The illustration below shows the terms that are used later on.

- Ascender: portion of a lower case letter that extends above its body
- Descender: portion of a lower case letter that extends below its body
- Baseline: imaginary line upon which the base of the characters sit.
Rasterizing Type
Painting tools, filters and some other options can't be applied type layers. In order to do so, the type layers must be rasterized first. Often, if you try to apply a tool or command that can't be used on type layers, you'll be prompted with a warning message. Some warning dialogs (e.g., for filters) will ask if you want to rasterize the layer. If you click OK, it will immediately rasterize the layer for you.
You can convert type layers to raster layers by going to Layer > Rasterize > Type. Once you've rasterized a type layer, it can no longer be edited as type.
About Type Summary
- Type is created as vector shapes on special type layers.
- A typeface or font is a collection of lower case characters, upper case characters, and symbols.
- An ascender is the portion of a lower case letter that extends above its body.
- A descender is the portion of a lower case letter that extends below its body.
- The baseline is an imaginary line upon which the base of the characters sit.
- Text can be rasterized so that the drawing tools and filters can be used on them.
- Rasterized type can no longer be edited as type.
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