# responsivo

> A web extension for firefox allowing to view multiple view widths at once. Inspired by Emmet Re:view

Canonical page: [https://chrome-stats.com/d/responsivo](https://chrome-stats.com/d/responsivo)

## Overview

- **ID:** `responsivo`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** michael.lill
- **Category:** web-development
- **Daily users:** 223
- **Weekly downloads:** 6
- **Rating:** 5.00 / 5 (6 ratings)
- **Version:** 0.0.7
- **Last updated:** 2025-06-02
- **First published:** 2021-06-23
- **Size:** 171 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/responsivo/)
- **Website:** [https://codeberg.org/michael.lill/responsivo](https://codeberg.org/michael.lill/responsivo)

## Description

Responsivo is a Firefox web extension designed to simplify the process of responsive web design testing. It allows developers and designers to view multiple viewport widths at the same time, facilitating a better understanding of how a website looks and behaves across different devices and screen sizes. Inspired by the Emmet Re:view tool, Responsivo offers an efficient and user-friendly solution directly within the browser, streamlining responsive design workflows.

With Responsivo, users can save time and improve accuracy by previewing various screen widths simultaneously without the need for multiple device emulators or external tools. This extension is ideal for front-end developers, designers, and anyone involved in creating responsive, mobile-friendly web experiences.

## Rankings

- #7,774 — Overall
- #13 — response
- #140 — tons
- #224 — input

## Permissions and access

### Permissions

- `<all_urls>`
- `activeTab`
- `http://*/*`
- `https://*/*`
- `storage`
- `webNavigation`
- `webRequest`
- `webRequestBlocking`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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/responsivo)