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Usagi fork

This fork may break a number of features or introduce bugs which will rape your server, no support it provided.


FChannel is a libre, self-hostable, federated, imageboard platform that utilizes ActivityPub.

There are currently several instances federated with each other, for a full list see: https://fchan.xyz

There is an anon testing FChannel instances on TOR/Loki/I2P. Find more information here: https://fchan.xyz/g/MORL0KUT It is a testing environment, so the instances might come and go.

To Do List

Current things that will be implemented first are:

  • A way to automatically index new instances into a list so others can discover instances as they come online.
  • Setting up a server proxy so that clearnet instances can talk to TOR/Loki/I2P instances.
  • Other improvements will be made over time, first it needs to be as easy as possible for new instances to come online and connect with others reliably.

Try and run your own instances and federate with one of the instances above. Any contributions or suggestions are appreciated. Best way to give immediate feedback is the XMPP: xmpp:general@rooms.fchannel.org or Matrix: #fchan:matrix.org


To get started on hacking the code of FChannel, it is recommended you setup your git hooks by simply running git config core.hooksPath .githooks.

This currently helps enforce the Go style guide, but may be expanded upon in the future.

Before you make a pull request, ensure everything you changed works as expected, and to fix errors reported by go vet and make your code better with staticcheck.

Server Installation and Configuration

Minimum Server Requirements

  • Go v1.16+
  • PostgreSQL
  • ImageMagick
  • exiv2

Server Installation Instructions

  • Ensure you have Golang installed and set a correct GOPATH
  • git clone the software
  • Copy config-init to config/config-init and change the values appropriately to reflect the instance.
  • Create the database, username, and password for psql that is used in the config file.
  • Build the server with make
  • Start the server with ./fchan.

Server Configuration

config file

instance:fchan.xyz Domain name that the host can be located at without www and http:// or https://

instancetp:https:// Transfer protocol your domain is using, should be https if possible. Do not put https:// if you are using http://

instanceport:3000 Port the server is running on locally, on your server.

instancename:FChan Full name that you want your instances to be called.

instancesummary:FChan is a federated image board instance. Brief description of your instance.

dbhost:localhost Database host. Most likely leave as localhost.

dbport:5432 Port number for database. Most likely leave the default value.

dbname:fchan_server Database name for psql.

dbuser:admin Database user that can connect to dbname.

dbpass:password Database password for dbuser.

torproxy: Tor proxy route and port, leave blank if you do not want to support

instancesalt:put your salt string here Used for secure tripcodes currently.

modkey:3358bed397c1f32cf7532fa37a8778 Set a static modkey instead of one randomly generated on restart.





emailnotify:email1@so.co, email2@bo.uo Comma seperated emails To.


Extra links to external boards, websites, etc... can be appended to the board navigation header by modifying views/partials/extboards.html.
Example with two external boards

Local testing

When testing on a local env when setting the instance value in the config file you have to append the port number to the local address eg. instance:localhost:3000 with instanceport also being set to the same port.

If you want to test federation between servers locally you have to use your local ip as the instance eg. instance: and instance: adding the port to localhost will not route correctly.

Managing the server

To access the managment page to create new boards or subscribe to other boards, when you start the server the console will output the Mod key and Admin Login Use the Mod key by appending it to your server's url, https://fchan.xyz/[Mod key] once there you will be prompted for the Admin Login credentials. You can manage each board by appending the Mod key to the desired board url: https://fchan.xyz/[Mod Key]/g The Mod key is not static and is reset on server restart.

Server Update

Check the git repo for the latest commits. If there are commits you want to update to, git pull and restart the instance.


NGINX Template

Use Certbot, (or your tool of choice) to setup SSL.

server {
        listen 80;
        listen [::]:80;

        root /var/www/html;

        server_name DOMAIN_NAME;

        client_max_body_size 100M;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                #try_files $uri $uri/ =404;
                proxy_pass http://localhost:3000;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-Forwarded-Proto $scheme;
                proxy_cache_bypass $http_upgrade;

Using Certbot With NGINX

  • After installing Certbot and the Nginx plugin, generate the certificate: sudo certbot --nginx --agree-tos --redirect --rsa-key-size 4096 --hsts --staple-ocsp --email YOUR_EMAIL -d DOMAIN_NAME
  • Add a job to cron so the certificate will be renewed automatically: echo "0 0 * * * root certbot renew --quiet --no-self-upgrade --post-hook 'systemctl reload nginx'" | sudo tee -a /etc/cron.d/renew_certbot


Please consider submitting a pull request if you set up a FChannel instance with Apache with instructions on how to do so


Please consider submitting a pull request if you set up a FChannel instance with Caddy with instructions on how to do so


A Dockerfile is provided, and an example docker-compose.yml exists to base your Docker setup on. You should use the config-init.docker file to configure it and it will work more or less out of the box with it, you should just need some minor configuration changes to test it out.

Remember, you may need to look at the section on local testing to use 100% of FChannel's features.