Comparer.

Compare prices, renewals, and plans on any webpage.

Scan the page you are on, capture offers, and research the same products, domain renewals, or subscription plans across the web — in Chrome, Brave, Edge, Chromium, and Firefox.

No tracking · no analytics cookies
No accounts · nothing to sign up for
Local only · scans stay on your device

Download Extension Installation steps

One extension. Every offer worth checking.

Built for shoppers, domain owners, and anyone comparing SaaS or hosting plans before they click buy or renew.

Product prices

Pull visible prices from product pages so you can compare offers quickly.

Domain renewals

Spot renewal and subscription costs before auto-renew locks you in.

Plans & research

Capture plan tiers on pricing pages, then open web research for alternatives.

How it works

Three steps from “interesting page” to a clearer decision.

Open any page

Visit a store, registrar, or pricing table in your browser of choice.

Scan with Comparer

Click the extension, scan the page, and review detected prices and plans.

Research alternatives

Launch a focused web search for the same offer from other providers.

Install after download

Your download is a zip you load as an unpacked extension. Works the same way on Chromium browsers and Firefox.

Click Download Extension — the zip saves automatically.
Unzip comparer-extension.zip on your computer.
Chrome / Brave / Edge / Chromium: open chrome://extensions (or brave://extensions / edge://extensions), enable Developer mode, choose Load unpacked, and select the unzipped folder.
Firefox: open about:debugging#/runtime/this-firefox, choose Load Temporary Add-on…, and select manifest.json inside the unzipped folder.

Privacy-first by design

Comparer is built to help you compare — not to collect your data. We do not run ad trackers, sell information, or upload your scans to our servers.

Website

No login, no analytics pixels, no advertising cookies. Read our policies anytime.

Extension

Page scans run locally. Saved comparisons live in your browser storage only.

Your control

Clear saved items in the extension or uninstall to remove local data completely.