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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....Acquisition Ask AI GroupDocs Documentation / GroupDocs.Metadata Product...Family / GroupDocs.Metadata for Java / Developer Guide / Advanced...
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The SetProperties method is used to update or add metadata. You can easily add metadata to photos, pdfs or you can update or add data to mp3 files....Acquisition Ask AI GroupDocs Documentation / GroupDocs.Metadata Product...Family / GroupDocs.Metadata for Java / Developer Guide / Basic Usage...
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