Load the compression module:
1#Load Deflate module
2LoadModule deflate_module modules/mod_deflate.so
3# DeflateAlterETag NoChange #optional, as Nextcloud supports this
Enable for the FileRun site:
1<IfModule mod_deflate.c>
2AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript application/json
3</IfModule>
1#Load Brotli module
2LoadModule brotli_module modules/mod_brotli.so
3BrotliAlterETag NoChange
The BrotliAlterETag configuration is important so that e-tag headers do not get altered with the -br postfix, breaking the desktop sync protocol.
Hoping Nextcloud adds support also for Brotli-encoded content at some point: https://github.com/nextcloud/desktop/blob/master/src/libsync/helpers.cpp#L22
Enable for the FileRun site:
1<IfModule mod_brotli.c>
2AddOutputFilterByType BROTLI_COMPRESS text/html text/plain text/xml text/css text/javascript application/javascript application/json
3</IfModule>