Supported File Formats

Microsoft Office and Visio Formats

• Word: DOC, DOCX, DOCM, DOT, DOTX, DOTM, RTF, TXT
• Excel: XLS, XLSX, XLSM, XLSB, XLTM, XLT, XLTM, XLTX, XLAM, SXC, SpreadsheetML
• PowerPoint: PPT, PPTX, PPS, PPSX, PPSM, POT, POTM, POTX, PPTM
• Visio: VSD, VDX, VSS, VSSX, VSX, VST, VSTX, VTX, VSDX, VDW, VSTM, VSSM, VSDM

Adding Watermark

• PDF: XObject, Artifact, Annotation
• Word: Shape
• Excel: Shape, Header & Footer
• PowerPoint: Shape
• Visio: Shape
• Raster Image: Text, Image
• Multi-page Tiff: Text, Image
• Animated Gif: Text, Image

PDF and Image documents

• Portable Document Format: PDF
• Open Document: ODT
• Email: EML, MSG, EMLX, OFT
• Images: PNG, BMP, GIF, JPG, JPEG, JP2, TIF, TIFF, WebP

Removing Watermark

• PDF: XObject, Artifact, Annotation, Regular Text
• Word: Shape, Regular Text
• Excel: Shape, Header & Footer, Background Image, Text and formulas in cells
• PowerPoint: Shape
• Visio: Shape, Diagram Comments
• Email: Attached and embedded images, Subject and body text fragments

GroupDocs.Watermark for .NET Features

• Add or remove watermarks from a particular section or whole document of various file formats.
• Attach watermark to all images in a particular section, page, slide, or document.
• Assign watermark to only particular frames of a multi-framed image.
• Allocate hidden watermark to PDF that only appears when printing document.
• Set watermark to all attachments in an Excel document & all image shapes in slides.
• Place watermark or remove it from the background images of spreadsheet or slides.
• Employ watermark to supported files in all attachments of an email or PDF document.
• Apply or remove watermark as XObjects, artifacts & annotations in PDF documents.
• Eliminate watermark containing text with particular formatting.
• Look for image watermarks that resemble a particular image.
• Identify text watermark even if there are unreadable characters between letters.
• Search watermarks based on specific parameters or by combining multiple criteria.
• Specify font formatting to look for matching text watermark.
• Programmatically extract page setup & other information for supported formats.
• Add watermark to images inside any header & footer in supported document formats.
• Add watermark to image shapes in a word document & lock watermarks to restrict editing.
• Protect text watermark using unreadable characters in presentations.
• Rasterize particular page or whole PDF document to protect added watermarks.
• Change text formatting while replacing existing text watermark.
• Align watermark to bleed box, art box, crop box, or trim box in PDF document.
• Edit shape properties in Microsoft Visio documents.