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Grocery Compare by Jason

Automatically compares prices on UK supermarket websites.

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About this extension

Firefox extension that automatically shows grocery prices from other UK supermarkets

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Permissions and data

Required permissions:

Access your data for sites in the sainsburys.co.uk domain
Access your data for sites in the waitrose.com domain
Access your data for sites in the tesco.com domain
Access your data for sites in the aldi.co.uk domain
Access your data for sites in the lidl.co.uk domain
Access your data for sites in the coop.co.uk domain
Access your data for sites in the marksandspencer.com domain
Access your data for groceries.morrisons.com

Optional permissions:

Access your data for grocery-uk-api.vercel.app

Data collection:

The developer says this extension doesn't require data collection.