3 extensions · 100% on-device · zero tracking

Tools that respect
your browser & your data

Shubix builds privacy-first Chrome extensions that do real work without ever sending your files to a server.

Turn documents into quizzes, run autonomous QA on live pages, and capture your screen — all processed locally, on your machine.

Browse the suite Contact maker
3question types & quizzes
7+QA audit engines
7capture modes
The Shubix suite

Three extensions. One principle.

Each tool solves a different job — extraction, testing, capture — and every one runs entirely inside your browser. No accounts, no uploads, no telemetry.

📄 Education · v1.4.0

QExtract

PDF & DOCX → interactive quizzes

Upload exam papers, assignments, or textbook pages and QExtract detects the questions, options, and answer keys — then turns them into editable quizzes, printable worksheets, or a Google Form. Parsing happens locally, so your documents never leave the browser.

PDF · DOCX · DOC · TXT Review & edit before publish In-app quiz player Auto-grade MCQ & rubrics Printable worksheets Export to Google Forms
● Free No sign-up · No uploads · runs offline in your browser
For: teachers · tutors · students · parentsSize: 3.3 MB
QExtract — review
Q1. Capital of France?
Paris
Berlin
Q2. 7 × 8 = ?
54
56
🤖 Developer Tools · v1.2.0

QAgentExt

Autonomous QA testing agent

Run professional QA flows directly on live pages — no scripts, no setup. QAgentExt explores your app, self-heals fragile selectors with deep DOM fingerprints, and runs a full lab of audits, then exports polished reports and ready-to-run automation code.

Autonomous Explore Mode Self-healing selectors Visual regression diffs WCAG 2.1 AA scan Core Web Vitals budget Security & memory audits
● Free No accounts · No external APIs · works on VPN & internal sites
Exports: HTML reports · automation codeSize: 270 KB
https://app.under-test.dev/login
Log in
  • Type "admin" in username
  • Click "Log in"
  • Assert dashboard visible
  • 0 a11y · 0 security issues
🎬 Tools · v1.2.0

SilentCapture

Capture anything. Interrupt nothing.

A lightweight recorder for screen, system audio, microphone, and camera — with picture-in-picture overlays, scheduled recording, a frame-perfect trim slider, and one-click GIF export. Everything is processed 100% locally; not a single byte leaves your device.

7 recording modes Scheduled capture One-click GIF export PiP webcam overlay Visual trim slider 6 languages
● Free No watermark · No uploads · 100% local recording & export
For: creators · educators · professionalsSize: 123 KB
SilentCapture — recording
00:42 Screen + Mic
⏺ Record✂ Trim⏱ Schedule↻ GIF
The Shubix promise

Powerful, without the price of your privacy

Runs 100% locally

Parsing, testing, and recording all happen in your browser. Your files and flows never touch a server.

No accounts, no tracking

Zero telemetry, no sign-ups, no data collection. Install and use — that's the whole flow.

Works offline & on VPN

No external APIs means the suite works on internal dev environments and protected sites.

Lightweight & fast

Tightly built extensions — from 123 KB — that load instantly and stay out of your way.

Questions

Frequently asked

Is Shubix really free?+
Yes. All three extensions — QExtract, QAgentExt, and SilentCapture — are free on the Chrome Web Store. There's no paywall, no subscription, and no account to create. Install the ones you need and start using them.
Does my data leave my browser?+
No. Every tool processes data 100% locally. QExtract parses your documents in-browser, QAgentExt runs tests on the page without external APIs, and SilentCapture records and exports entirely on your device. Nothing is uploaded to a Shubix server.
Which browsers are supported?+
Any Chromium-based browser that installs from the Chrome Web Store — Google Chrome, Microsoft Edge, Brave, Arc, Opera, and similar. Just open the store listing and click "Add to Chrome".
Do I need to sign up or log in?+
Never. There are no accounts, no telemetry, and no tracking. The extensions request permissions only when you actively start a task — like picking a file or beginning a recording.
Can I use them offline or on internal sites?+
Yes. Because there are no external API calls, QAgentExt is VPN-ready and works on protected internal dev environments, and QExtract's parsing works offline. SilentCapture records locally regardless of connection.
Who builds Shubix, and how do I get support?+
Shubix is built by Shubham Singh. For questions, bugs, or suggestions, email shubix.connect@gmail.com or reach out on X.

Get the whole suite

Three focused tools from a single maker — install the ones you need, free on the Chrome Web Store.