[dimkr1]

Or, you can use https://github.com/dimkr/nss-tls - everything that uses gethostbyname(), addrinfo(), etc', including Firefox with network.trr.mode set to DNS, will use DoH

[antpls]

Another option that may work, suggested by pmoriarty in another thread : https://github.com/jedisct1/dnscrypt-proxy which is a DNS proxy server that could locally transform classic DNS to DNS-over-HTTPS by using iptables to redirect DNS traffic to it (https://news.ycombinator.com/item?id=20370741)

[nothrabannosir]

I use this and it works great. Especially in combination with https://github.com/jedisct1/bitbar-dnscrypt-proxy-switcher (and its dependency Bitbar), which gives you a little icon in the taskbar to monitor and manage the dnscrypt settings. (mac os x)

[wtmt]

That seems to be Linux-only. There should ideally be GUI applications for every platform that lay people can download, install and run with sane defaults. Cloudflare did that for mobile with the 1.1.1.1 app.

[vorticalbox]

Thanks for this link :)