User-Agent: *
# all

Disallow: *.txt
Disallow: *.pdf
Disallow: *.doc
Disallow: *.docx
Disallow: *.odt
Disallow: *.rtf
Disallow: *.tex
Disallow: *.htm
Disallow: *.html
# various text and document files

Disallow: *.bmp
Disallow: *.gif
Disallow: *.ico
Disallow: *.jpeg
Disallow: *.jpg
Disallow: *.png
Disallow: *.svg
Disallow: *.tif
Disallow: *.tiff
# various image files

Disallow: *.m4a
Disallow: *.mp3
Disallow: *.mp4
Disallow: *.ogg
Disallow: *.avi
# various media files

Disallow: *.js
Disallow: *.css
# various embedded site code

Disallow: /
# directory root

Disallow: *
# files without suffix