In order to utilize the Sixel graphics, you would need to run an SSH client that supports it. One example that works well and is free is Tabby - all common platforms like Win, Mac OS and Linux are supported, inc. the ARM64 CPU architecture.
Alternatively, for a text-based only approach, install links2.
Concerns
Sixel is an 'ancient' tech that may have security vulnerabilities, which is concerning, especially in combination with SSH tunnels.
The project's developer is Chinese, which could be a concern for some users.
mkdir -p /opt/brow6el
git clone https://codeberg.org/janantos/brow6el.git
cd brow6el
# Download the Chromium-based framework
./download_cef.sh
# Build the rest and set permissions to allow others to execute it
./build.sh
# If you have more than one user, make it executable and accessible for them:
sudo chmod -R 755 /opt/brow6el
Run a test
./brow6el https://codeberg.org
Create a Global Command
We will create a command that will be accessible to all users on the Debian system.
Create a script file:
sudo nano /usr/local/bin/browse
#!/bin/bash
# Move to the installation directory so it can find local dependencies
cd /opt/brow6el
# Run the application, passing all arguments ("$@") to it
# We use LD_LIBRARY_PATH to ensure it finds the CEF libraries in the same folder
LD_LIBRARY_PATH=. ./brow6el "$@"
Make it accessible:
sudo chmod +x /usr/local/bin/browse
Test it
cd /
browse https://google.com
I tried accessing a page called seznam.cz via Tabby SSH client:
Quick Controls
x = Exit
u = Enter URL
Quick Tips
For more settings, go to ~/.brow6el/cef_flags.conf
Troubleshooting
Missing Libraries: If the application fails to start, complaining about libcef.so or similar, ensure the library path is correct. You might need to set LD_LIBRARY_PATH:
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(pwd)
"Garbage" text output: If you see a stream of random characters instead of images, your terminal client does not support Sixel.
Solution: Close the Proxmox web console. Install WezTerm or Foot on your local machine and SSH into the VM (ssh user@your-vm-ip).