GroupDocs.Watermar API supports adding the following image file types as image watermark:
Bmp; Png; Gif; Jpeg. Add image watermark from local file Following code snippet shows how to add ImageWatermark to a document. If the document consists of multiple parts (pages, worksheets, slides, frames etc), the watermark will be added to all of them.
advanced_usage.adding_image_watermarks.AddImageWatermark
// Specify an absolute or relative path to your document. Ex: "C:\\Docs\\presentation.pptx" Watermarker watermarker = new Watermarker("presentation....Close Navigation Products GroupDocs.Total Product Family GroupDocs...
The page describes how to add resource redaction annotation to a document using GroupDocs.Annotation for Java....Close Navigation Products GroupDocs.Total Product Family GroupDocs...
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GroupDocs.Search for .NET supports any 32-bit or 64-bit operating system where .NET or Mono framework is installed...Close Navigation Products GroupDocs.Total Product Family GroupDocs...
This article shows the implementation of annotation redaction for documents of different formats like PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX and others....Close Navigation Products GroupDocs.Total Product Family GroupDocs...
Reading PNG metadata properties The GroupDocs.Metadata API supports extracting format-specific information from PNG images.
The following are the steps to read the native PNG metadata.
Load a PNG image Get the root metadata package Extract the native metadata package using PngRootPackage.getPngPackage Read the PNG metadata properties advanced_usage.managing_metadata_for_specific_formats.image.png.PngReadTextChunks
try (Metadata metadata = new Metadata(Constants.InputPng)) { PngRootPackage root = metadata.getRootPackageGeneric(); for (PngTextChunk chunk : root.getPngPackage().getTextChunks()) { System.out.println(chunk.getKeyword()); System.out.println(chunk.getText()); if (chunk instanceof PngCompressedTextChunk) { PngCompressedTextChunk compressedChunk = (PngCompressedTextChunk) chunk; System....Close Navigation Products GroupDocs.Total Product Family GroupDocs...