GPT4Free Page Summarizer (Local Free API)

Generate a summary of any webpage or selected text using a local instance of g4f

As of 2025-04-11. See the latest version.

This userscript generates concise webpage summaries using a local GPT4Free instance (g4f), displayed in a sleek, collapsible sidebar.

The language detection is based on your browser settings.

How to install a local GPT4Free instance (linux)

mkdir g4f-api
cd g4f-api
python -m venv .venv
source .venv/bin/activate
pip install g4f\[all\]
python -m g4f.api.run

You can automate it at startup with the following run.sh script:

cd g4f-api
source .venv/bin/activate
pip install --upgrade g4f[all]
python -m g4f.api.run

and a cron setup:

@reboot /your/path/to/run.sh