Proxy & UA Switcher - SEOULTRA de Seoultra

Proxy Manager & User Agent Switcher — SEOULTRA

A proxy manager and User-Agent switcher for Chrome built with Manifest V3. Toggle features on/off with a Mustang-style console popup.

── Toolbar status icon ──
• Colorful logo + GREEN dot → Proxy ON and connected
• Colorful logo + RED dot → Proxy ON but not reachable / misconfigured
• Grayscale logo (no dot) → Proxy OFF
• Grayscale logo + UA badge → Proxy OFF, User-Agent ON
• Colorful logo + GREEN dot + UA badge → Proxy ON connected + User-Agent ON
• Colorful logo + RED dot + UA badge → Proxy ON not reachable + User-Agent ON

── Proxy Features ──
• One-click enable/disable from the popup
• Supports HTTP, HTTPS, SOCKS4, and SOCKS5 schemes
• Configurable host, port, and bypass list (e.g. <local>, 127.0.0.1, localhost)
• Automatic connectivity re-check after every change
• MV3-compliant: Chrome will prompt you if the proxy requires authentication

── User-Agent Switcher ──
• Override your browser's User-Agent header from the popup or options page
• 17+ presets: Googlebot, Bingbot, YandexBot, Baiduspider, DuckDuckBot,
Applebot, GPTBot, ChatGPT-User, OAI-SearchBot, ClaudeBot, Claude-Web,
PerplexityBot, Bytespider, Cohere-AI, Twitterbot, Facebookbot, LinkedInBot
• Custom User-Agent text input
• Independent enable/disable toggle — works with or without proxy

── General ──
• Mustang console popup — car-style vertical toggle switches with LED indicators
• Color-coded LEDs: green (proxy), cyan (UA)
• Icons on toggle levers: shield (proxy), user (UA), gear (setup), refresh (update)
• 6 toolbar icon states — instantly see proxy + UA status at a glance
• Two-way sync — popup and options page stay in sync in real time
• Professional CSS design token system — consistent theming across all surfaces
• Compact options page — scheme, host, port in one row
• Smooth popup open with pre-allocated dimensions
• Settings stored locally in chrome.storage.local — nothing leaves your browser

── What's new in 1.4.0 ──
• Mustang console popup — car-style toggle console with vertical flip switches
(up = ON, down = OFF), LED indicators, red glowing border, SEOULTRA logo header
• Icons on toggle levers — shield, user, gear, refresh on each switch handle
• Compact options page — scheme/host/port on one row, streamlined buttons,
"Proxy Setting" card title, SEOULTRA logo header
• Professional CSS design tokens — 40+ variables for consistent theming
• Smooth popup open — pre-allocated dimensions + opacity fade-in
• Removed viewport emulation and network throttle (experimental, will return)

── What's new in 1.3.0 ──
• User-Agent Switcher — new feature with 17+ bot presets plus custom input
• 6 toolbar icon states — unique icons for every proxy/UA combination,
with a sunglasses badge overlay when User-Agent is active
• Options page UA section — full card with cyan/teal theme, toggle,
dropdown, custom input, and live preview status bar
• Popup redesigned — proxy and UA are separate sections with independent
toggles, color-coded badges, and "UA ACTIVE" indicator
• Footer moved — "Check for updates" is now in the popup footer
• Renamed to "Proxy Manager & User Agent Switcher — SEOULTRA"
• Added declarativeNetRequest permission for header modification

── What's new in 1.2.1 ──
• Two-way sync between popup and options — toggling Enable on either
surface updates the other in real time
• Refined options-page footer with SEOULTRA branding (linked to seoultra.id),
single-row layout on desktop, stacked on mobile
• Page title updated to "Minimal Proxy Setting — SEOULTRA"
• Fixed an MV3 service-worker bug where setIcon could fail with
"Failed to fetch" on first install
• Documentation cleanup

── What's new in 1.2.0 ──
• Brand refresh — now uses a unified logo that turns grayscale when disabled
and shows a green/red status dot when enabled
• Transparent popup background for a cleaner look in the toolbar
• New "Check for updates" link in both popup and options page
• Reorganized assets folder and refined background worker code
• Renamed to "Minimal Proxy Manager — SEOULTRA"

── What's new in 1.1.0 ──
• Initial public release with HTTP/HTTPS/SOCKS support, bypass list,
and three-state toolbar icon

── Permissions ──
• proxy — required to set Chrome's proxy configuration
• storage — saves settings locally
• declarativeNetRequest — required to modify the User-Agent request header
• <all_urls> — required so the proxy and UA override apply to all sites

No analytics. No tracking. No remote code. Open, auditable, and minimal by design.

── Support ──
If you find this extension useful, consider supporting the project:
• PayPal: https://www.paypal.com/paypalme/josuamarcelc/1
• Buy Me a Coffee: https://buymeacoffee.com/josuamarcelc