Who should use Responsify Slider?

Responsify Slider is an open-source project built for web developers and frontend designers.

What platforms does Responsify Slider run on?

Responsify Slider runs on the web and embeddable surfaces.

Is Responsify Slider still maintained?

Unverified. Responsify Slider has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Responsify Slider?

Similar projects tracked by PulseGate include Hashrate Lens, SaveAI, and Codex File Drop.

Who makes Responsify Slider?

Responsify Slider is developed by karthikricssion.

How long has Responsify Slider been around?

Responsify Slider first shipped in 2021.

Back to the index

Responsify Slider

Name: Responsify Slider
Author: karthikricssion

github.comInfrastructure

Responsify Slider is an open-source browser extension for previewing websites at adjustable viewport widths. It helps frontend developers and designers inspect responsive layouts without limiting tests to predefined device dimensions.

Open SourceWebEmbeddable

Visit github.com

Overview

5 features

In the Browser DevTools & extensions space, Responsify Slider takes a focused approach. It focuses on checking how websites respond across different viewport widths without manually resizing the browser. It is built as an open-source project for web developers and frontend designers. Responsify Slider is open source under the Open Source license. Responsify Slider is available on the web and embeddable surfaces.

It is developed by karthikricssion, and it first shipped in 2021. Among its 5 catalogued features are viewport slider, responsive preview, and adjustable width. Responsify Slider is currently in beta.

Summary written by a language model from the project’s public pages.

Viewport slider
Responsive preview
Adjustable width
Website testing
Firefox extension

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed10 Sept · 00:26 UTC
Responsify viewer verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Responsify Slider

What is Responsify Slider?: Responsify Slider focuses on checking how websites respond across different viewport widths without manually resizing the browser. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Responsify Slider?: Responsify Slider is an open-source project built for web developers and frontend designers.
Is Responsify Slider free?: Yes — Responsify Slider is open source under the Open Source license and free to use.
What platforms does Responsify Slider run on?: Responsify Slider runs on the web and embeddable surfaces.
Is Responsify Slider still maintained?: Unverified. Responsify Slider has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Responsify Slider?: Similar projects tracked by PulseGate include Hashrate Lens, SaveAI, and Codex File Drop.Hashrate Lens SaveAI Codex File Drop
Who makes Responsify Slider?: Responsify Slider is developed by karthikricssion.
How long has Responsify Slider been around?: Responsify Slider first shipped in 2021.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
First seen: 10 Sept 2026
Status: 🟡 Beta
Built for: web developers and frontend designers
Model: Open source
Solves: Checking how websites respond across different viewport widths without manually resizing the browser.

Registered as

Firefox Add-ons: responsify-viewer

Developer

karthikricssion

Index record

Indexed: 10 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 10 Sept 2026

Identity audit (13)

Slug: responsify-viewer-github-com
Lifecycle state recorded: 10 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 10 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 10 Sept 2026
Canonical URL: https://github.com/karthikricssion/responsify-slider-extension

Ship this? Send a correction — no account, and you get a link to follow it.

Also in Browser DevTools & extensions

Same category — not a similarity match