@INTOX8O location /pdf-tool {
proxy_pass https://192.168.6.225:8351/pdf-tool;
# 重写静态资源请求的 URL
rewrite ^/pdf-tool/(css|js|images|svg)/(.*)$ /pdf-tool/$1/$2 break;
# 替换 icon
sub_filter 'href="/apple-touch-icon.png' 'href="/pdf-tool/apple-touch-icon.png';
sub_filter 'href="/favicon-32x32.png' 'href="/pdf-tool/favicon-32x32.png';
sub_filter 'href="/favicon-16x16.png' 'href="/pdf-tool/favicon-16x16.png';
sub_filter 'href="/site.webmanifest' 'href="/pdf-tool/site.webmanifest';
sub_filter 'href="/safari-pinned-tab.svg' 'href="/pdf-tool/safari-pinned-tab.svg';
sub_filter 'href="/favicon.ico' 'href="/pdf-tool/favicon.ico';
sub_filter 'href="pdfjs/locale/locale.properties' 'href="/pdf-tool/pdfjs/locale/locale.properties';
# 修改 html 结构中的路径
sub_filter 'action="/' 'action="/pdf-tool/';
# 替换所有匹配到的
sub_filter_once off;
# 设置超时时间为 5 分钟
proxy_read_timeout 300;
proxy_connect_timeout 300;
proxy_send_timeout 300;
send_timeout 300;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

这样配置的，需要做一些替换