I need the markdown output of an R Markdown file to convert it with pandoc manually. But when I use knitr::include_graphics to include local JPEG images and knit to HTML with keep_md (or to markdown), ...

Google has introduced a new image format to help speed up the performance of websites. WebP (pronounced “weppy”) reduces the file size of images by 40 percent, the company claims. Images make up 65 ...