vincent-dalstra / brother_ql_web Goto Github PK

This is a web service to print labels on Brother QL label printers.

You need Python 3 for this software to work.

The web interface is responsive. There's also a screenshot showing how it looks on a smartphone

• Print text as QR Code
  • Add text to QR Code
  • Change size of QR Code
• Upload files to print
  • .pdf, .png and .jpg files
  • automatically convertion to black/white image
• Change print color for black/white/red labels
• Print lables multiple times
  • Cut every label
  • Cut only after the last label
• Migrated GUI to Bootstrap 4
• Make preview for round labels.. round

This installation manual requires only a default installation of Debian 10 (Buster). Install prerequisites:

apt install fontconfig python3-venv python3-pip git poppler-utils

Get the code:

cd /opt
git clone https://github.com/tbnobody/brother_ql_web.git

Build the venv and install the requirements:

cd /opt/brother_ql_web
python3 -m venv .venv
source /opt/brother_ql_web/.venv/bin/activate
pip install -r requirements.txt

Create a directory called 'instance', a file called 'application.py' and adjust the values to match your needs.

mkdir /opt/brother_ql_web/instance
touch /opt/brother_ql_web/instance/application.py

E.g. """ User specific application settings """ import logging PRINTER_MODEL = 'QL-820NWB' PRINTER_PRINTER = 'tcp://192.168.1.33:9100'

To start the server, run ./run.py.

Copy service file, reload system, enable and start the service

cp brother_ql_web/systemd/[email protected] /etc/systemd/system
systemctl daemon-reload
systemctl enable [email protected]
systemctl start [email protected]

Running the server on port 80 means you don't have to specifiy the port to connect; however, this requires root priveleges for the process. One solution is to use a firewall to redirect connections from port 80 to a 'registered port'

For example, using iptables:

sudo iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8013

The web service can now be bound to port 8013, and will receive connections on both ports.

Once it's running, access the web interface by opening the page with your browser. If you run it on your local machine, go to http://localhost:8013. You will then be forwarded by default to the interactive web gui located at /labeldesigner.

All in all, the web server offers:

• a Web GUI allowing you to print your labels at /labeldesigner,
• an API at /api/print/text?text=Your_Text&font_size=100&font_family=Minion%20Pro%20(%20Semibold%20) to print a label containing 'Your Text' with the specified font properties.

This software is published under the terms of the GPLv3, see the LICENSE file in the repository.

Parts of this package are redistributed software products from 3rd parties. They are subject to different licenses:

• Bootstrap, MIT License
• Font Awesome, CC BY 4.0 License
• jQuery, MIT License