Basis by johnwils

Unit prices on Loblaws, No Frills, Walmart.ca. One unit, in place. No tracking. Reports are opt-in.

About this extension

Canadian grocery sites print unit prices in mixed units — $/100g, $/kg, ¢/100g, $/lb. Basis rewrites that line on the page so comparable packaged items use the same unit. The shelf price does not change. Cards sold by each (no mass or volume) are left alone.

Tested on Superstore, Walmart.ca, and Metro. Built for Loblaws-family banners, Voilà, Amazon.ca, and other named Canadian grocery hosts. Choose 100 g, kg, or lb for mass; 100 ml or L for volume.

Private by design. Parsing runs on the page. No account, no ads, no affiliates, no tracking. A problem report is opt-in: the popup copies hostname and rewrite counts to your clipboard and opens a blank GitHub form. Turn it on from the toolbar when you want it.

Source: https://github.com/johnwils/basis-extension

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Permissions and data

Required permissions:

Access your data for sites in the amazon.ca domain
Access your data for sites in the atlanticsuperstore.ca domain
Access your data for sites in the costco.ca domain
Access your data for sites in the farmboy.ca domain
Access your data for sites in the foodbasics.ca domain
Access your data for sites in the foodland.ca domain
Access your data for sites in the fortinos.ca domain
Access your data for sites in the freshco.com domain
Access your data for sites in the grocerygateway.com domain
Access your data for sites in the iga.net domain
Access your data for sites in the independentcitymarket.ca domain
Access your data for sites in the instacart.ca domain
Access your data for sites in the loblaw.ca domain
Access your data for sites in the loblaws.ca domain
Access your data for sites in the longos.com domain
Access your data for sites in the maxi.ca domain
Access your data for sites in the metro.ca domain
Access your data for sites in the nofrills.ca domain
Access your data for sites in the provigo.ca domain
Access your data for sites in the realcanadiansuperstore.ca domain
Access your data for sites in the saveonfoods.com domain
Access your data for sites in the sobeys.com domain
Access your data for sites in the superc.ca domain
Access your data for sites in the superstore.ca domain
Access your data for sites in the thriftyfoods.com domain
Access your data for sites in the tntsupermarket.com domain
Access your data for sites in the valumart.ca domain
Access your data for sites in the voila.ca domain
Access your data for sites in the walmart.ca domain
Access your data for sites in the wholesaleclub.ca domain
Access your data for sites in the yourindependentgrocer.ca domain
Access your data for sites in the zehrs.ca domain
Access your data for amazon.ca
Access your data for atlanticsuperstore.ca
Access your data for costco.ca
Access your data for farmboy.ca
Access your data for foodbasics.ca
Access your data for foodland.ca
Access your data for fortinos.ca
Access your data for freshco.com
Access your data for grocerygateway.com
Access your data for iga.net
Access your data for independentcitymarket.ca
Access your data for instacart.ca
Access your data for loblaw.ca
Access your data for loblaws.ca
Access your data for longos.com
Access your data for maxi.ca
Access your data for metro.ca
Access your data for nofrills.ca
Access your data for provigo.ca
Access your data for realcanadiansuperstore.ca
Access your data for saveonfoods.com
Access your data for sobeys.com
Access your data for superc.ca
Access your data for superstore.ca
Access your data for thriftyfoods.com
Access your data for tntsupermarket.com
Access your data for valumart.ca
Access your data for voila.ca
Access your data for walmart.ca
Access your data for wholesaleclub.ca
Access your data for yourindependentgrocer.ca
Access your data for zehrs.ca

Data collection:

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