免費抓圖：FastStone Capture

一套免費的抓圖軟體.
Features

• A small floating Capture Panel that can be dragged anywhere or minimized to the Windows tray area
• Resource friendly - uses a very small amount of memory, especially when minimized to the Windows tray area
• Global hotkeys to activate the program's capture capabilities anytime, anywhere
• Efficient tools to capture windows, objects, full screen, rectangle/freehand-selected regions and scrolling areas
• Capture web pages in Microsoft Internet Explorer, FireFox and Opera
• Option to specify destination (internal editor, clipboard or file) where the captured image will be sent
• Screen color picker
• Text/Arrowed line/Highlight/Watermark annotation
• Drop-shadow, torn-edge effects
• Add comments
• Resize, crop, brightness, contrast, gamma, sharpen, blur, gray, negative
• Zoom in/out
• Undo/Redo
• Save as BMP, JPEG, JPEG2000, PNG, GIF, TIFF, TGA, PDF
• Send captured images in e-mails
• Screen Magnifier
• Divide it into multi-pages when printing long document
• Multi-monitor support
• Option to run when Windows starts
• And many more ...

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Reference:
http://www.faststone.org/FSCaptureDetail.htm