iFixit/wkhtmltopdf-php — comment on commit 652cfee3c189832ba053735566737d73e9a61160
File:  line 0
By danielbeardsley:

Looks like the `--dpi` setting [doesn't do much](http://code.google.com/p/wkhtmltopdf/issues/detail?id=229). The images in one of the usages we have turned out full-resolution, giving and effective DPI of ~250 or so. I would think the `--dpi` setting would only prevent down-scaling, does the `--disable-smart-shrinking` option help?