# WhatStack

> A browser extension that tells the tech stack of a website.

Canonical page: [https://chrome-stats.com/d/whatstack?hl=pt](https://chrome-stats.com/d/whatstack?hl=pt)

## Overview

- **ID:** `whatstack`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Aditya Srivastava
- **Category:** search-tools,appearance,bookmarks
- **Daily users:** 12
- **Weekly downloads:** 2
- **Version:** 3.0.0
- **Last updated:** 2025-06-27
- **First published:** 2025-06-24
- **Size:** 291 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/whatstack/)
- **Website:** [https://shikhar.is-a.dev](https://shikhar.is-a.dev/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/whatstack/privacy/](https://addons.mozilla.org/firefox/addon/whatstack/privacy/)

## Description

WhatStack is a browser extension that instantly detects and displays the tech stack of any website you visit. With one click or keyboard shortcut, it reveals frontend frameworks, backend languages, CMSs, and other technologies used on the site. Whether it's React, Vue, Node.js, PHP, or WordPress, WhatStack analyzes the page using browser APIs and public data—without tracking or sending information to external servers. It's fast, lightweight, and ideal for developers, designers, and tech enthusiasts curious about how websites are built. WhatStack runs entirely in your browser and supports a wide range of sites with a clean, user-friendly popup interface.

## Rankings

- #30,934 — Overall
- #155 — stock
- #191 — stats

## Permissions and access

### Permissions

- `activeTab`
- `scripting`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate 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).

## Similar extensions and apps

- [WhatStack: Tech Stack Scanner](https://chrome-stats.com/d/whatstack-tech-stack-scanner)
- [Stack Spy](https://chrome-stats.com/d/stack-spy) — 4 users
- [WebStack](https://chrome-stats.com/d/webstack) — 29 users
- [SiteStacks for Firefox - Instant Tech Lookup](https://chrome-stats.com/d/sitestacks) — 75 users, 4.50 / 5
- [Weblyzer - Web Analyzer](https://chrome-stats.com/d/weblyzer-web-analyzer) — 154 users
- [Open Tech Explorer](https://chrome-stats.com/d/openexplorer_tech) — 5 users
- [Stackalyzer](https://chrome-stats.com/d/stackalyzer)
- [Website Technology Detector](https://chrome-stats.com/d/website-technology-detector) — 284 users, 5.00 / 5
- [WhatRuns Pro](https://chrome-stats.com/d/whatruns-pro) — 23 users
- [IntelBee - Website Tech Detector](https://chrome-stats.com/d/intelbee-website-tech-detector) — 2 users, 5.00 / 5
- [Ful.io - Technology Profiler and lookup](https://chrome-stats.com/d/fulio) — 1 users
- [StackDetect](https://chrome-stats.com/d/stackdetect) — 29 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/whatstack?hl=pt)