Thumbnail viewer SDK
Embed a thumbnail viewer in your .NET application to display previews of raster images, metafiles, and PDFs. Load items from files, streams, bitmaps, or folders — then move, swap, delete, or modify them. Supports drag and drop between controls and from Windows Explorer.
High-performance thumbnail engine
Generate thumbnails from PDF pages and images in more than 90 formats. Supports multipage documents, asynchronous and multithreaded processing, drag and drop, and full visual customization — even across large folder structures.
Thumbnail generation
Create thumbnails from PDF pages or images in more than 90 formats. Load from directories with subfolders, or from GdPicture image and PDF objects with multipage support.
Asynchronous processing
Generate thumbnails asynchronously with multithreaded support for smooth UI performance and scalable batch operations.
User interaction
Drag-and-drop support and mouse-based reordering make it easy to manage and reorganize thumbnails.
Visual quality
Anti-aliasing for smooth rendering. Scale bitonal bitmaps to grayscale for better presentation quality.
Size control
Set custom thumbnail dimensions to match your UI layout or workflow requirements.
Performance speed
Fast item generation handles large batches and multipage documents efficiently.
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How to use
GdPicture.NET includes a powerful thumbnail viewer component formerly called ThumbnailEx. The ThumbnailEx class is an embeddable control of the GdPicture.NET suite to display thumbnails from raster image, metafile, and PDF documents.
Generate thumbnails
Synchronize with a
GdViewer object and generate thumbnails from GdPictureImage objects, GdPicturePDF objects, or folders.Add items individually
Items can be individually added from files, streams, or bitmaps.
Manipulate items
Items can be moved, swapped, deleted, or modified. Drag-and-drop functionality between different
ThumbnailEx controls or from Windows Explorer is fully supported.Trusted by 3,000+ customers and Fortune 500 companies
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Frequently asked questions
Which file formats are supported by the GdPicture.NET thumbnail viewer control?
The ThumbnailEx control supports generating thumbnails from more than 90 image formats, including raster images, metafiles, and PDF documents. This extensive format support ensures versatility in handling various document types.
Can the
ThumbnailEx control be synchronized with other viewer components?Yes. The ThumbnailEx control can be synchronized with a GdViewer object, allowing for coordinated display and navigation between the thumbnail pane and the main document viewer. This synchronization enhances user experience by providing intuitive navigation.
Does the control support drag-and-drop functionality?
Absolutely. The ThumbnailEx control fully supports drag-and-drop operations, enabling users to move, swap, delete, or modify items within the thumbnail pane. It also allows for drag-and-drop interactions between different ThumbnailEx controls or from Windows Explorer, facilitating efficient content management.
Is it possible to generate thumbnails asynchronously?
Yes. The control supports asynchronous thumbnail generation, which enhances application performance by loading thumbnails in the background without blocking the main UI thread.
Can the
ThumbnailEx control generate thumbnails from directories, including subfolders?Yes. The control can generate thumbnails from a specified directory and its subfolders, providing a comprehensive view of all supported documents within a directory structure.
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