From https://gethostlens.com/en/privacy
HostLens privacy policy
Last updated: 17 September 2026

HostLens is a Google Chrome and Firefox extension developed by BK Modules. This policy explains which data the extension handles and how. The short version: no data leaves your browser.

What the extension does
It shows the IP address of the server behind the page you are viewing, the CDN serving it, the server software and, if you enable it, the technologies the site is built with.

Data it handles and where
Data Used for Where it lives How long
IP and headers of each tab's main page IP, CDN, node, cache, server Firefox storage.session, in your browser Until you close the tab
Your settings and the disabled-domain list Remembering your configuration Your Firefox profile (storage.sync / local) Until you uninstall
Public page markers (meta generator, script URLs, globals) Tech detection, if enabled Not stored — read when the panel opens While the panel is open
Cookie names of the site (never their values) Refining PHP, PrestaShop, Laravel…, if enabled Not stored While the panel is open
What the extension does not do
It sends no data to BK Modules or to third parties. It has no server of its own.
It makes no network requests: all information comes from the response Firefox already received from the page.
It collects no usage statistics and uses no analytics tools inside the extension.
It requires no account or registration.
It does not read form contents, passwords or cookie values.
It does not modify the pages you visit beyond adding the badge with the IP.
Permissions it asks for and why
Read and change all your data on all websitesis the warning Firefox shows so the extension can see the IP address and headers of the page you load and place the badge. Only each tab's main response is observed; nothing is modified or blocked.
Storageto save your settings.
Optionalrequested only when you enable the feature and removed when you disable it: running a script in the active tab to detect technologies, and reading the cookie names of the active site.
You can disable the extension on a given domain from the panel, on every site with the global switch, or restrict its site access from extensions menu.

Links to bkmodules.com and this website
The extension links to bkmodules.com from the panel, the options page and on install (quick start). Those links carry utm_* parameters that only indicate which part of the extension was clicked; they do not identify the user. When visiting bkmodules.com the website's privacy and cookie policy applies. This website (gethostlens.com) uses Google Analytics through Google Tag Manager to count visits and clicks; that measurement belongs to the website, not to the extension.