ql-thumbnail

Generate thumbnail image using OS X Quick Look

Wafer-thin wrapper around the QuickLook QLThumbnailImageCreate() API.

Build

$ git clone [...]
$ cd ql-thumbnail
$ make

Usage

./ql-thumbnail <sourcefile> <destination_thumbnailfile> <type> <width> <height> [quality]
./ql-thumbnail image.pdf image.png public.png 1024 1024
./ql-thumbnail sourcecode.cpp thumbnails/sourcecode.png public.jpeg 128 512
./ql-thumbnail nasa.jpg nasa-thumb.jpg public.jpeg 128 128 0.1

Notes

• Size (width/height) values are upper bounds. A smaller thumbnail might be returned.
• Destination folder for output thumbnail image must exist.
• Quality parameter is optional, defaults to 1.0 (no compression).

Supported output formats

• "public.jpeg"
• "public.png"
• "com.compuserve.gif"
• "public.jpeg-2000"
• "public.tiff"
• "com.apple.icns"
• "com.adobe.photoshop-image"
• "com.adobe.pdf"
• "com.microsoft.ico"
• "com.microsoft.bmp"
• "com.truevision.tga-image"
• "com.sgi.sgi-image"
• "com.ilm.openexr-image"
• "public.pbm"
• "public.pvr"
• "org.khronos.astc"
• "org.khronos.ktx"
• "com.apple.rjpeg"

Related

qlmanage -- Quick Look Server debug and management tool

License

MIT © 2016 Ingve Vormestrand