Peptide Library browser extensions: privacy policy
Full policy: https://peptidelibrary.app/privacy#browser-extensions

Our browser extensions (the Peptide Calculator, Unit Converter, Research Library, Price Comparison and Inventory Tracker) do not read, change or record the websites you visit, and they do not load code from the internet. They store what you save in them (history, presets, favorites, pinned conversions, your shipping country, preferences and, if you sign in, your session) in your browser's own extension storage, which other websites cannot access. Removing an extension deletes that data.

Public lookups. The Research Library, Price Comparison and (optionally) the Unit Converter and Peptide Calculator request public catalog data from our servers: peptide profiles you search or open, and vendor offers. The Price Comparison sends the shipping country you choose so we can show which vendors ship there; it stays stored on your device.

Your account. If you sign in (Inventory Tracker, and the Peptide Calculator for syncing saved calculations), your email and password are sent to our authentication provider (Supabase) to sign you in, and the extension then reads and changes only your own account data, under the same protections as the app and website. Signing out deletes the session from the extension.

Usage counts (opt-in). Nothing is counted until you agree on the extension's first screen or in its settings (in Firefox, also through Firefox's own data-collection permission). With your agreement, the extension sends daily totals: which extension, browser and version, and how many times features were used or errors happened. These totals carry no account, device or install identifier and never include peptide names, searches, amounts or inventory contents. You can turn this off at any time in the extension's settings.

Vendor links and affiliates. A vendor's page opens only when you click "Visit vendor" in the Price Comparison. Some of these links are affiliate links, labeled as such, which may earn us a commission at no cost to you. If you agreed to usage counts, we also record that an offer was viewed or clicked (the offer, vendor, extension and your chosen shipping country, without any identifier of you). Affiliate status never changes how offers are ranked.

Notifications. Inventory alerts are shown by your browser only if you turn them on and allow notifications; they are planned from your inventory inside the extension.

We do not sell extension data, use it for advertising, or use it to determine creditworthiness or for lending. Questions: https://peptidelibrary.app/support