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Export vector drawings from Keynote to a PNG with transparency Apps
Instead of buying expensive vector drawing software, Keynote can be used as a simple but great vector drawing tool. The problem is you can only export entire slides as images from the File menu and there will be a white background. There is no obvious way of exporting just the vector art to an image file. Fortunately there is a solution. Use the following method to extract just your vector art creation to a .png file with alpha transparency.
  • Create a vector-based drawing.
  • Drag and select the entire vector drawing you are going to export.
  • Choose Edit » Copy from the menus.
  • Open Preview.app.
  • In Preview choose File » New from Clipboard.
  • The vector drawing will then appear with a transparent background, ready to be exported as a PNG.
[crarko adds: It seems like a quick, cheap way to go the job. Probably not for all situations.]
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Export vector drawings from Keynote to a PNG with transparency | 4 comments | Create New Account
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Export vector drawings from Keynote to a PNG with transparency
Authored by: Strod on Mar 17, '14 08:49:23AM

That's a nice and certainly useful hint. But it has one big flaw: The image obtained this way is no longer a vector drawing, but rather a bitmap. You lose the advantages of a vector drawing.

For example, if you zoom in the drawing will get horribly pixelated instead of retaining its sharpness. Or if you view it on a higher resolution medium (say you make it on a regular screen and then view that on a retina display, or a page printed on a decent laser printer) you will notice that the quality is quite degraded.

Still, I see where this could be useful and it's certainly better than the export options included with Keynote.



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Export vector drawings from Keynote to a PNG with transparency
Authored by: AlanU on Mar 17, '14 01:42:23PM

To respond to the previous commenter, when you export from Preview as a png then, yes, it is a bitmap because png is a bitmap format. But within Preview you can also save as a pdf, and this creates a pdf (vector-based) with transparency preserved.

Actually I had trouble getting the png to preserve transparency - but I am happier using the pdf anyway.



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Export vector drawings from Keynote to a PNG with transparency
Authored by: ribbo39 on Mar 18, '14 05:51:16AM

For some time now I have been using screencapture which initially was always
in .jpg format.
I was advised by an Apple tech to use a terminal command to change it to a .png format as follows;
The Terminal command is as follows:
defaults write com.apple.screencapture type FILETYPE

Replace FILETYPE with the format you wish. For example - defaults write com.apple.screencapture type jpg - or - defaults write com.apple.screencapture type png

After entering the Terminal command you will need to restart the Mac

This has been very useful for my purpose and I can easily, after working on the .png,
eport it back to jpg using Preview>export as>

This may be helpful.



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Export vector drawings from Keynote to a PNG with transparency
Authored by: shapiro on Mar 19, '14 08:05:00AM
This was already the topic of a previous hint in 2010: "Save PDF Graphic Elements using Preview"

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