# Developer Site Tester

> Quickly test web pages for load speed, responsiveness, and performance.

Canonical page: [https://chrome-stats.com/d/developer-site-tester](https://chrome-stats.com/d/developer-site-tester)

## Overview

- **ID:** `developer-site-tester`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Coral Calhoun
- **Category:** web-development
- **Daily users:** 1
- **Version:** 0.1.0.1resigned1
- **Last updated:** 2025-12-19
- **First published:** 2025-12-16
- **Size:** 94 KB
- **Data as of:** 2026-09-05
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/developer-site-tester/)

## Description

Tailored for developers, this tool provides fast access to speed and responsiveness data for any open tab. It ensures efficient performance testing during the design or debugging phase. Stay informed about how your site behaves in real time.

## Rankings

- #108,346 — Overall
- #193 — developer tools

## Permissions and access

### Permissions

- `tabs`
- `http://*/*`
- `https://*/*`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate 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 has low user count. Unpopular extensions may not be stable or safe.

> 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/developer-site-tester)