# Responsify viewer

> A simple slider to check the responsivness of the website.

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

## Overview

- **ID:** `responsify-viewer`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Karthikeyan Rajendran
- **Category:** web-development
- **Daily users:** 596
- **Weekly downloads:** 13
- **Rating:** 4.40 / 5 (5 ratings)
- **Version:** 0.1
- **Last updated:** 2021-02-03
- **First published:** 2021-02-03
- **Size:** 148 KB
- **Data as of:** 2026-09-15
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/responsify-viewer/)
- **Website:** [https://github.com/karthikricssion/responsify-slider-extension](https://github.com/karthikricssion/responsify-slider-extension)

## Description

Responsify Viewer is a Chrome extension designed to help web developers and designers quickly test the responsiveness of any website. Unlike fixed device presets, this extension provides a simple slider tool that allows you to adjust the browser viewport width dynamically. By moving the slider, you can see how a website responds to different screen sizes intuitively, making it easier to optimize layouts for a variety of devices. This extension streamlines responsive testing without the need to specify exact widths or heights, enhancing workflow efficiency.

## Rankings

- #4,508 — Overall
- #9 — response
- #32 — viewer
- #143 — tons

## Permissions and access

### Permissions

- `tabs`
- `<all_urls>`
- `activeTab`
- `storage`

### Content script matches

- `*`

## Safety

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

## Similar extensions and apps

- [Responsive Viewer GT](https://chrome-stats.com/d/responsive-viewer-gt) — 51 users
- [View Responsive Layouts](https://chrome-stats.com/d/view-responsive-layouts)
- [responsivo](https://chrome-stats.com/d/responsivo) — 222 users, 5.00 / 5
- [Responsive Viewer](https://chrome-stats.com/d/responsive-vieweree) — 99 users
- [Responsively Helper](https://chrome-stats.com/d/responsively-helper) — 643 users, 3.75 / 5
- [ResponsiveHelper](https://chrome-stats.com/d/responsivehelper) — 20 users, 2.00 / 5
- [Responsive Check](https://chrome-stats.com/d/responsive-check) — 39 users, 4.00 / 5
- [ResponsiveViewer Plus](https://chrome-stats.com/d/responsiveviewer-plus) — 1 users
- [ResponsiveView Wizard](https://chrome-stats.com/d/responsiveview-wizard) — 1 users
- [Mobile Website Tester](https://chrome-stats.com/d/mobile-website-tester) — 1 users
- [InstaResizer](https://chrome-stats.com/d/instaresizer) — 1 users
- [Mobile View Toggle](https://chrome-stats.com/d/mobile-view-toggle) — 3 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/responsify-viewer)