I am using wkhtml in OS X to convert an HTML file to a PDF. I am able to do this successfully using the code
/usr/local/bin/wkhtmltopdf sample.com --zoom 0.65 /Users/dwm8/Desktop/sample.pdf
My problem is that the file is rather large, coming in at about 500 KB. Is there any way to shrink the file size? All I am interested is the visual contents of the page (I would be fine taking a screenshot of the website if I didn't have to do it manually), and I don't care about all of the hyperlinks or other website features showing up in my PDF.
The flag that works best for me in reducing file size is
--image-dpi 300
As the default DPI is 600, this can reduce the filesize of an image-heavy PDF by 75% and is still good enough for most purposes.
There are two other flags you can use:
--lowquality - supposedly makes it smaller
--image-quality 80 - jpeg compression, default is 94
but overall I find the DPI makes the biggest difference, and if you aren't printing to 600dpi or zooming then you're not really losing anything.
For your use case also try
--no-outline - as you likely don't need a contents section
and the self-explanatory
--disable-internal-links
--disable-external-links
but these are likely to be smaller wins.