# Siteimprove Browser Extension

> Website performance scores at your fingertips Have the most comprehensive performance metrics always by your side: - how a web page lives up to quality standards - how discoverable it is for search engines - if it meets accessibility standards

Canonical page: [https://chrome-stats.com/d/digital-certainty-index](https://chrome-stats.com/d/digital-certainty-index)

## Overview

- **ID:** `digital-certainty-index`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** Siteimprove
- **Daily users:** 197
- **Weekly downloads:** 3
- **Rating:** 1.67 / 5 (6 ratings)
- **Version:** 1.1.1
- **Last updated:** 2020-05-15
- **First published:** 2018-02-16
- **Size:** 42 KB
- **Data as of:** 2025-08-27
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/digital-certainty-index/)
- **Website:** [http://siteimprove.com/](http://siteimprove.com/)

## Description

Siteimprove Browser Extension is a Firefox add-on that provides comprehensive performance metrics for websites, including quality standards, discoverability for search engines, and accessibility.

## Permissions and access

### Permissions

- `cookies`
- `tabs`
- `activeTab`
- `storage`
- `webRequest`
- `webRequestBlocking`
- `*://*.siteimprove.com/*`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension is not longer available in the store

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/digital-certainty-index)