Features
Features
Aspose.PDF FOSS for .NET provides a broad set of PDF processing capabilities across several functional areas. All features are available without a license key under the MIT License.
Document management
Create new PDF documents, open existing files from disk or byte arrays, add and remove pages, and save or serialise documents back to streams or files.
Key classes: Document, Page, PageCollection
Annotations
Read, create, and modify the full range of PDF annotation types including text
notes, link annotations, ink annotations, file attachments, caret annotations,
and stamp annotations. Annotations are accessed through Page.Annotations and
typed via the AnnotationType enumeration.
Key classes: Annotation, AnnotationCollection, LinkAnnotation,
AnnotationType
PDF actions
Attach URI, GoTo, JavaScript, named, and launch actions to link annotations or
as document-level open actions. Actions are created through the PdfAction
factory and typed via ActionType.
Key classes: PdfAction, GoToAction, JavascriptAction, NamedAction,
ActionType
Forms and fields
Access interactive AcroForm fields (text boxes, check boxes, choice lists),
read field values, and enumerate field collections through Document.Form.
Key classes: Form, Field, CheckboxField, ChoiceField, TextBoxField
Text extraction
Extract text fragments and character information from any page using
TextFragmentAbsorber. Navigate text segments and inspect font properties.
Key classes: TextFragmentAbsorber, TextFragment
Image handling
Work with image resources embedded in a PDF and convert between supported
raster formats using the ImageFormat enumeration
(Bmp, Jpeg, Png, Tiff, Gif, and others).
Key classes: ImageFormat
Content-stream parsing
Parse PDF content streams at the operator level using Operator and
OperatorCollection. Inspect graphics state transitions including fill/stroke
alpha and blend mode through ExtGState.
Key classes: Operator, OperatorCollection, ExtGState, GraphicsState
JavaScript field extensions
Apply Acrobat-compatible JavaScript field-formatting rules in managed code.
FieldDateTimeFormatter formats date/time strings using Acrobat-style format
patterns. FieldNumberCurrencyFormatter formats numeric values as currency.
FieldNumberPercentFormatter formats numeric values as percentages.
Key classes: FieldDateTimeFormatter, FieldNumberCurrencyFormatter,
FieldNumberPercentFormatter
Facades
Use FormattedText to describe styled text for stamp and mend operations.
Font style and encoding are controlled through the FontStyle and
EncodingType enumerations.
Key classes: FormattedText, FontColor, FontStyle, EncodingType
