Iligani UA Switcher

Switch your browser user agent with a sleek interface and automatic reload.

Iligani UA Switcher: Professional Device & Browser Simulation Iligani UA Switcher is a high-performance developer tool designed to simplify cross-browser testing and responsive design verification. Developed by Carlo San Juan, this extension goes beyond simple header modification by providing a "Silent Pro" simulation environment that synchronizes your User-Agent with real-time viewport behavior. Why Choose Iligani? Most switchers only change the request header, leaving the JavaScript environment and CSS layout mismatched. Iligani bridges this gap by overriding internal browser logic to ensure websites believe—and behave—as if they are on the target device. Key Features Comprehensive UA Library: Instantly switch between 40+ curated profiles, including the latest Chrome, Firefox, Safari, and Edge versions across Desktop, Mobile, Tablet, and Gaming Apps. Silent Pro Simulation: When switching to Mobile or Tablet, the extension automatically overrides window.innerWidth and window.innerHeight. Visual Viewport Masking: Injects specialized CSS to center and constrain layouts (e.g., 450px for Mobile, 820px for Tablet), providing a realistic "device-in-browser" preview on your desktop. Search Engine Emulation: Test how your site appears to Googlebot, Bingbot, and ChatGPT (GPTBot) to optimize your SEO and crawler visibility. Sleek Developer UI: A modern, dark-themed interface built for speed, featuring category tabs and instant search functionality. Automatic Tab Synchronization: Refreshes your active tab immediately upon switching to ensure the new profile is applied without manual intervention.