Chrome Extension & Firefox Add-on
Proxy Manager & User Agent Switcher - SEOULTRA
One-click proxy toggle and User-Agent switcher with 17+ bot presets. Mustang-style console popup with LED indicators. HTTP/HTTPS/SOCKS4/SOCKS5 support. No tracking, no analytics — everything stays local one.
Colourful + Green
Proxy ON and connected.
Colourful + Red
Proxy ON but cannot reach.
Grayscale
Proxy OFF.
+ Sunglasses Badge
User-Agent override is active.
Green LED
Proxy toggle is ON.
Cyan LED
User-Agent toggle is ON.
Proxy Features
- One-click proxy toggle from the popup.
- Supports HTTP, HTTPS, SOCKS4, and SOCKS5.
- Can configure host, port, and bypass list.
- Auto re-check connectivity after every change.
- 6 toolbar icon states so you can see status straightaway.
User-Agent Switcher
- 17+ bot presets: Googlebot, Bingbot, GPTBot, ChatGPT-User, ClaudeBot, and more.
- Custom User-Agent text input.
- Independent toggle — works with or without proxy.
- Sunglasses badge on toolbar icon when active.
- Two-way sync between popup and options page.
Mustang Console Popup
Car-style vertical flip switches with LED indicators. Toggle up = ON, toggle down = OFF. Each switch got an icon on its lever: shield (Proxy), user (UA), gear (Setup), refresh (Update). Red glowing border with SEOULTRA logo header.
General
- Manifest V3-safe for Chrome and Firefox.
- Professional CSS design token system.
- Compact options page with inline form layout.
- Smooth popup open with pre-allocated dimensions.
- No telemetry, no tracking, no analytics. Open source.
Install Steps
- Install from Chrome Web Store or Firefox Add-ons.
- Click extension icon to open the console popup.
- Flip the Proxy switch up and configure in Settings.
- Select a User-Agent preset or key in a custom one.
- Flip the UA switch up to activate. Done.
Screenshots






Support Contact
Email: info[at]seoultra.id