GroupDocs.Metadata for .NET API is easy to integrate with C#, ASP.NET and other .NET based applications to help your end-users manipulate metadata from a range of images, documents and other media file formats without installing any external software. The .NET metadata library supports building tools to quickly add metadata viewer, editor, remover, extractor, comparison and exporter functionalities within a number of industry standard document formats such as PDF, Microsoft Office Word, Excel spreadsheets, PowerPoint presentations, Outlook emails, Project, Visio diagrams, OneNote, images, AutoCAD, Photoshop, audio, video and metafiles.

The Metadata API is very flexible and easy to operate with. It gets the document file as input, analyses the metadata information, allows to perform supported meta data operations and save the modified file to access quickly in future use. It works with most notable metadata standards such as built-in, XMP, EXIF, IPTC, Image Resource Blocks, ID3 and custom metadata properties. Through GroupDocs.Metadata for .NET API, you can also compare two documents to identify differences and similarities present in their metadata properties. You can also export metadata of required documents to Excel, CSV or DataSet.

GroupDocs.Metadata for .NET can be used to develop applications in any development environment that targets .NET platform. It is compatible with all .NET based languages and supports popular operating systems (Windows, Linux, MacOS) where Mono or .NET frameworks (including .NET Core) can be installed.

GroupDocs.Metadata for .NET Features

Identify Built-in & Custom Metadata Retrieve & Remove Hidden Data in Microsoft Word, Excel, PowerPoint & PDF Run-time Recognition of Document File Type Ability to Detect/Remove Digital Signatures Identify Password Protection & Support for the Matroska Multimedia Container Retrieve Thumbnails & Render Image Previews for Supported Formats Detect MIME Type of a Specific File or File Stream Generate Image Previews for EPUB, CAD, EML & MSG Files Use Defined Key to Read Metadata Property of Supported Formats Read Metadata of Email Messages & Parse OpenType Font Files Read Matroska subtitles and retrieve Metadata of Audio & Video Files Get Metadata of Archive formats & Torrents Compare Metadata Properties of Supported Formats & Identity Differences or Similarities Search Metadata Properties of Files and Enumerate any Type of Metadata Replace Metadata Properties of Supported File Formats Extract Metadata from Microsoft Excel Files Starting from Excel 95 Find Photos Made on Specific Camera Import Images Metadata Properties & Remove Location Info from Photos Remove Metadata & Comments From Reports and Documents Extract Text Metadata from PNG Image files Reducing Memory Consumption of Documents & Images Update EXIF Metadata Properties in WEBP, PNG & PSD Files Extract XMP Metadata Properties in MOV, MP3 & WEBP Files Add, Update and Delete IPTC Metadata Packages in TIFF Images

Retrieval and Manipulation of Hidden Data
GroupDocs.Metadata for .NET provides a handy mechanism to fetch and remove hidden data in PDF as well as Microsoft Word, Excel, and PowerPoint documents. Following is a list of metadata information that you can manipulate using GroupDocs.Metadata for .NET:

Microsoft Word (Comments, Hidden Text, Merge Fields)
Microsoft Excel (Comments, Hidden Sheets)
Microsoft PowerPoint (Comments, Hidden Slides)
PDF Documents (Attachments, Annotations, Bookmarks, Form Fields)

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