: How to find out true dimesion, dpi of picture inside a powerpoint slide without it original JPEG file? I have a big problem here is how to find out the true quality of picture inside a

@Sent7350415

You can get the original image from a PowerPoint file:


change .pptx to .zip (if it's a .ppt, you're out of luck)
unzip folder with your favorite unzipping tool (7zip is my favorite)
go into unzipped folder > media > images (or something like that)
Here you'll find the original images


But, as noted by Scott, even the original image probably won't be good enough to use for a 6x3m billboard. Try getting the original high quality image. Google image search lets you search for an uploaded image, you could try that and buy/download/request the original.

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