What domains/protocols in the img-src
directive of the Content-Security-Policy header are required to allow Google AdWords conversion tracking?
From te
You can use Wikipedia's List of Google domains. There are many domains unrelated to Google Adwords, but I don't think allowing domains like youtube.com
could cause problems.
Currently the list is:
google.com
google.ac
google.ad
google.ae
google.com.af
google.com.ag
google.com.ai
google.al
google.am
google.co.ao
google.com.ar
google.as
google.at
google.com.au
google.az
google.ba
google.com.bd
google.be
google.bf
google.bg
google.com.bh
google.bi
google.bj
google.com.bn
google.com.bo
google.com.br
google.bs
google.bt
google.co.bw
google.by
google.com.bz
google.ca
google.com.kh
google.cc
google.cd
google.cf
google.cat
google.cg
google.ch
google.ci
google.co.ck
google.cl
google.cm
google.cn
g.cn
google.com.co
google.co.cr
google.com.cu
google.cv
google.com.cy
google.cz
google.de
google.dj
google.dk
google.dm
google.com.do
google.dz
google.com.ec
google.ee
google.com.eg
google.es
google.com.et
google.fi
google.com.fj
google.fm
google.fr
google.ga
google.ge
google.gf
google.gg
google.com.gh
google.com.gi
google.gl
google.gm
google.gp
google.gr
google.com.gt
google.gy
google.com.hk
google.hn
google.hr
google.ht
google.hu
google.co.id
google.iq
google.ie
google.co.il
google.im
google.co.in
google.io
google.is
google.it
google.je
google.com.jm
google.jo
google.co.jp
google.co.ke
google.ki
google.kg
google.co.kr
google.com.kw
google.kz
google.la
google.com.lb
google.com.lc
google.li
google.lk
google.co.ls
google.lt
google.lu
google.lv
google.com.ly
google.co.ma
google.md
google.me
google.mg
google.mk
google.ml
google.com.mm
google.mn
google.ms
google.com.mt
google.mu
google.mv
google.mw
google.com.mx
google.com.my
google.co.mz
google.com.na
google.ne
google.com.nf
google.com.ng
google.com.ni
google.nl
google.no
google.com.np
google.nr
google.nu
google.co.nz
google.com.om
google.com.pk
google.com.pa
google.com.pe
google.com.ph
google.pl
google.com.pg
google.pn
google.co.pn
google.com.pr
google.ps
google.pt
google.com.py
google.com.qa
google.ro
google.rs
google.ru
google.rw
google.com.sa
google.com.sb
google.sc
google.se
google.com.sg
google.sh
google.si
google.sk
google.com.sl
google.sn
google.sm
google.so
google.st
google.sr
google.com.sv
google.td
google.tg
google.co.th
google.com.tj
google.tk
google.tl
google.tm
google.to
google.tn
google.com.tr
google.tt
google.com.tw
google.co.tz
google.com.ua
google.co.ug
google.co.uk
google.com
google.com.uy
google.co.uz
google.com.vc
google.co.ve
google.vg
google.co.vi
google.com.vn
google.vu
google.ws
google.co.za
google.co.zm
google.co.zw
admob.com
adsense.com
adwords.com
android.com
blogger.com
blogspot.com
chromium.org
chrome.com
chromebook.com
cobrasearch.com
googlemember.com
googlemembers.com
com.google
feedburner.com
doubleclick.com
igoogle.com
foofle.com
froogle.com
googleanalytics.com
google-analytics.com
googlecode.com
googlesource.com
googledrive.com
googlearth.com
googleearth.com
googlemaps.com
googlepagecreator.com
googlescholar.com
gmail.com
googlemail.com
keyhole.com
madewithcode.com
panoramio.com
picasa.com
sketchup.com
urchin.com
waze.com
youtube.com
youtu.be
yt.be
ytimg.com
youtubeeducation.com
youtube-nocookie.com
like.com
google.org
google.net
466453.com
gooogle.com
gogle.com
ggoogle.com
gogole.com
goolge.com
googel.com
duck.com
googlee.com
googil.com
googlr.com
googl.com
gmodules.com
googleadservices.com
googleapps.com
googleapis.com
goo.gl
googlebot.com
googlecommerce.com
googlesyndication.com
g.co
whatbrowser.org
localhost.com
withgoogle.com
ggpht.com
youtubegaming.com
However, if you want to be sure if that's really all domains, you should ask Google directly.