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....formats / Images / Working with metadata in PNG images Working...Working with metadata in PNG images Leave feedback Reading PNG metadata...
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Download from GitHub The complete examples package of GroupDocs.Assembly is hosted on Github. You can either download the ZIP file from here or clone the repository of Github using your favorite Github client.
In case you download the ZIP file, extract the folders on your local disk. The extracted files and folders will look like following Image:
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