01
Visibility API Blocking
Websites won't know when you switch tabs. The visibilitychange event is completely blocked.
Why it matters
Interview sites watch every move
Modern interview platforms — Yandex Code, CoderPad, HackerRank, CodeSignal — actively track what happens inside the tab. Every tab switch, focus loss, or attempt to copy the task is logged as suspicious activity and forwarded to the interviewer.
Visibility API
01The visibilitychange event fires the moment you switch tabs, minimize the browser, or open the task switcher.
focus and blur events
02Captures the moment you click into another app or switch browser windows via Alt-Tab.
Clipboard blocking
03Sites disable text selection, right-click and the Clipboard API so you can't copy the task or paste an answer.
Sobes Extension
The extension patches these APIs at the page level: the browser keeps telling the site «everything is active, the user is focused», while you're reading ChatGPT in another window, copying code or reviewing the task outside the page.
Features
Everything you need to pass technical interviews without tracking
02
Focus Events Blocking
Blocks blur, focus, window.onfocus and window.onblur events on all websites.
03
Copy Unblocking
Copy text even on websites where it's disabled. Works automatically.
04
Smart Copy
Ctrl + hover highlights element, Ctrl+Alt copies all text of the element to clipboard.
05
Site Whitelist
Configure which sites the extension will be active on. Add domains via popup.
06
Privacy
Manifest V3, works locally, doesn't collect data. Open source on GitHub.
01 — 05
Installation
5 simple steps to install the extension from archive
- 01
Download archive
Download the extension archive from GitHub repository.
- 02
Extract
Unpack the archive to any folder on your computer.
- 03
Open extensions
Enter in Chrome address bar:
chrome://extensions/ - 04
Developer mode
Enable the toggle in the top right corner of the page.
- 05
Load extension
Click 'Load unpacked' and select the folder.