GemBox.Pdf
  • Overview
  • Examples
  • Free version
  • Support
  • Pricelist

    Show / Hide Table of Contents

    PdfFilterType Enum

    Namespace:
    GemBox.Pdf.Filters
    Assembly:
    GemBox.Pdf.dll

    Represents an enumeration of standard PdfFilters.

    • C#
    • VB.NET
    public enum PdfFilterType
    Public Enum PdfFilterType

    Fields

    ASCII85Decode

    Decodes data encoded in an ASCII base-85 representation, reproducing the original binary data.

    Parameters: no.

    ASCIIHexDecode

    Decodes data encoded in an ASCII hexadecimal representation, reproducing the original binary data.

    Parameters: no.

    CCITTFaxDecode

    Decompresses data encoded using the CCITT facsimile standard, reproducing the original data (typically monochrome image data at 1 bit per pixel).

    Parameters: yes.

    Crypt

    (PDF 1.5) Decrypts data encrypted by a security handler, reproducing the data as it was before encryption.

    Parameters: yes.

    DCTDecode

    Decompresses data encoded using a DCT (discrete cosine transform) technique based on the JPEG standard, reproducing image sample data that approximates the original data.

    Parameters: yes.

    FlateDecode

    (PDF 1.2) Decompresses data encoded using the zlib/deflate compression method, reproducing the original text or binary data.

    Parameters: yes.

    JBIG2Decode

    (PDF 1.4) Decompresses data encoded using the JBIG2 standard, reproducing the original monochrome (1 bit per pixel) image data (or an approximation of that data).

    Parameters: yes.

    JPXDecode

    (PDF 1.5) Decompresses data encoded using the wavelet-based JPEG2000 standard, reproducing the original image data.

    Parameters: no.

    LZWDecode

    Decompresses data encoded using the LZW (Lempel-Ziv-Welch) adaptive compression method, reproducing the original text or binary data.

    Parameters: yes.

    RunLengthDecode

    Decompresses data encoded using a byte-oriented run-length encoding algorithm, reproducing the original text or binary data (typically monochrome image data, or any data that contains frequent long runs of a single byte value).

    Parameters: no.

    Unknown

    PdfFilter is not standard.

    See Also
    PDF Specification ISO 32000-1:2008, section '7.4 Filters'
    Back to top

    Facebook • Twitter • LinkedIn

    © GemBox Ltd. — All rights reserved.