Of these options, which are lossless and which are lossy? (ie. which is best for text pdfs)?
Md Ariful Islam
বিএসসি(সিএসই)
,
এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
The text in PDF is mostly gzip compressed. Hence, there will not be any significant gain by any compression technique. The compression level is dependent on the size/resolution of images in PDF. This is a lossy compression where images inside PDF are compressed. I have generally used miniimagesvideos.com/pdf for high compression ratio. There could be some gain in PDF due to removal of some of the unwanted objects in PDF. However, this will not be significant.
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