Using the GroupDocs.Metadata search engine you can extract desired metadata properties from files of different types. You don’t need to worry about the exact file format and metadata standards it can deal with. The same code will work for all supported formats in the same way. Most commonly used metadata properties are marked with tags that allow searching them across all supported files in various metadata packages. All tags defined in GroupDocs....getValue () } ` ); } } }); More resources Advanced usage topics To learn...
This article explains how the The GroupDocs.Metadata API allows reading some common MPEG audio properties from MP3 files.... } More resources GitHub examples You may easily...
This article explains how to delete Barcode electronic signatures with GroupDocs.Signature API.... getMessage ()); } More resources Advanced Usage Topics To learn...
This article explains how to search for Image electronic signatures with GroupDocs.Signature API...." ); } More resources Advanced Usage Topics To learn...
This article explains how to sign document with Text signature by GroupDocs.Signature API. Let's try to add digital signature to a PDF programmatically....pdf" , options ); More resources Advanced Usage Topics To learn...
This article explains how to sign a document with Text signature by GroupDocs.Signature API. Let's try to add a digital signature to a PDF programmatically.... More resources GitHub Examples You may easily...
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.... More resources GitHub examples You may easily...