| Class | Description |
|---|---|
| Caret |
A Caret annotation (PDF 1.5) is a visual symbol that indicates
the presence of text edits.
|
| Circle |
Square and circle annotations (PDF 1.3) shall display,
respectively, a rectangle or an ellipse on the page.
|
| FileAttachment |
A file attachment annotation (PDF 1.3) contains a reference
to a file, which typically shall be embedded in the PDF file.
|
| FreeText |
A free text annotation (PDF 1.3) displays text directly on the page.
|
| Highlight |
Text markup annotations shall appear as highlights, underlines,
strikeouts (all PDF 1.3), or jagged (“squiggly”) underlines (PDF 1.4)
in the text of a document.
|
| Ink |
An ink annotation (PDF 1.3) represents a freehand “scribble” composed
of one or more disjoint paths.
|
| Line |
The purpose of a line annotation (PDF 1.3) is to display a single straight
line on the page.
|
| Link |
A link annotation represents either a hypertext link to a destination elsewhere in the document
or an action to be performed.
|
| Markup |
The meaning of an annotation’s Contents entry varies by annotation type.
|
| Movie |
The Class Movie.
|
| PolyLine |
Polyline annotations (PDF 1.5) display (open or closed) shapes of multiple edges on the page.
|
| Popup |
A pop-up annotation (PDF 1.3) displays text in a pop-up window for entry and
editing.
|
| Redaction |
A redaction annotation (PDF 1.7) identifies content that is intended to
be removed from the document.
|
| RubberStamp |
A rubber stamp annotation (PDF 1.3) displays text or graphics intended
to look as if they were stamped on the page with a rubber stamp.
|
| Screen |
A screen annotation (PDF 1.5) specifies a region of a page upon which
media clips may be played.
|
| Sound |
A sound annotation (PDF 1.2) shall analogous to a text annotation
except that instead of a text note, it contains sound recorded from
the computer’s microphone or imported from a file.
|
| Square |
Square and circle annotations (PDF 1.3) shall display,
respectively, a rectangle or an ellipse on the page.
|
| Squiggly |
TextMarkup annotations shall appear as highlights, underlines,
strikeouts (all PDF 1.3), or jagged (“squiggly”) underlines (PDF 1.4)
in the text of a document.
|
| StrikeOut |
TextMarkup annotations shall appear as highlights, underlines,
strikeouts (all PDF 1.3), or jagged (“squiggly”) underlines (PDF 1.4)
in the text of a document.
|
| Text |
A text annotation represents a “sticky note” attached to a point in
the PDF document.
|
| TextMarkup |
Text markup annotations shall appear as highlights, underlines,
strikeouts (all PDF 1.3), or jagged (“squiggly”) underlines (PDF 1.4)
in the text of a document.
|
| Underline |
Text markup annotations shall appear as highlights, underlines,
strikeouts (all PDF 1.3), or jagged (“squiggly”) underlines (PDF 1.4)
in the text of a document.
|
| Watermark |
A watermark annotation (PDF 1.6) shall be used to represent graphics
that shall be printed at a fixed size and position on a page,
regardless of the dimensions of the printed page.
|
| Widget |
Interactive forms use widget annotations (PDF 1.2) to represent the appearance
of fields and to manage user interactions.
|