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GUST
v4.0
Brave
Recent History
Last 20 visited sites
Gust Adblock
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Connection Info
Host
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Protocol
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Ad Block
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Cookies
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Cache
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Browser Metrics
WISP Server
Current server shown above
WISP Pool (Round-Robin)
Enable pool round-robin
Rotate across a benchmarked pool of public WISP servers for faster loads. Servers that fail for a site are skipped for that site; faster servers are picked more often.
Not benchmarked yet
Concurrent Requests
Idle threads
Max simultaneous requests when page is loaded
(default: 3). Lower = less background CPU.
3
Active threads
Max simultaneous requests during page load
(default: 6). Higher = faster loads but more CPU.
6
WebRTC Blocking
Block WebRTC connections
Prevents sites from establishing direct peer-to-peer connections that bypass the WISP tunnel and could expose your real IP address. Off by default — may break video calls and real-time apps.
Smart Request Headers
Spoof Sec-Fetch & Referer headers
Synthesize correct
Sec-Fetch-Site, Sec-Fetch-Mode, Sec-Fetch-Dest, and Referer headers based on request context. Fixes CDNs and APIs that reject requests with incorrect fetch metadata. Provider
Context
Page context by default
Automatically enable Page Context when the assistant opens.
Default
Search Engine
Custom Search Engine
Display name for the custom engine in the picker.
Use
{q} as the query placeholder. Only used when Custom engine is selected. Spellcheck [broken]
Enable spellcheck
Check spelling in text fields and textareas (e.g. search bar, forms).
Tab Favicons
Proxy favicons through WISP
Fetch tab favicons through the WISP server instead of Google's favicon service. More private, but slightly slower.
Privacy &
Blocking
Ad & Tracker Blocking
Blocks analytics, ads, and tracking
scripts
Paused Sites (Allowlist)
Adblock is paused on these sites. One hostname per line. Use "Pause for this site" in the shield popup to add sites.
User-Agent Spoofing
Request User-Agent
Sent as the
User-Agent HTTP header for all proxied requests.Page navigator.userAgent
Overrides
navigator.userAgent inside loaded pages. Blocklist &
Filters
Custom Filter Rules
Enter CSS selectors to hide (one per line).
Example:
.ad-banner Tab Caching
Keep tabs loaded in background
When enabled, switching between tabs
won't reload them. Disable to save memory.
Resource Cache
Cached Resources
Calculating...
Font Size
Adjust text size across the entire interface
Default
Panel
Widths
Remember panel widths
When enabled, panel widths are saved.
When disabled, they reset to default on close.
Panel Position
Panels on the left
Move side panels to the left side of the browser window instead of the right.
Fullscreen on Launch
Start in fullscreen
Automatically enter fullscreen on your first click or keypress after opening Gust.
Browser Skin
Disguise GUST as another
browser. Tabs, toolbar, menus and browser-specific extras are all
re-dressed to match the real thing.
*A note on GUST+. By default, GUST+ is identical to regular GUST. However, GUST+ allows you to hand pick tab styles, sidebars, home screens, and more from whichever skin does it best, then paint the whole thing in custom colors. Tune it below.
Identity
Match User-Agent to skin
Websites will see the masked browser's
User-Agent string, not just its looks. Managed automatically while
a skin is active — reload open pages to apply.
Opera GX Extras
UI sound effects
GX-style clicks and blips on tabs, buttons
and the sidebar. Only active while the Opera GX skin is on.
GUST+ Studio
Build your own browser.
Every row borrows that piece from a real mask — mix Chrome's tabs with
Brave's toolbar and a Zen sidebar, or anything else. Touching any control
switches you to the GUST+ mask.
Color theme
Tab strip
Toolbar
Address bar
Browser menu
Home screen
Sidebar
Zen vertical tabs replace the tab strip and toolbar entirely — the Tabs and Toolbar picks above go dormant while it's on.
Preset
GUST+ Toolbar & Modules
Every button and extra is
its own switch — strip the toolbar to nothing or turn everything on at once.
Applies while the GUST+ mask is active.
GUST+ Color Lab
Repaint anything. Core
palette drives the whole UI; below it, every color the borrowed parts
actually use is listed — click a swatch to change that exact pixel color
everywhere it appears.
Core palette
Borrowed-part colors
Pick some borrowed parts first — their colors will appear here.
GUST+ Shape & Type
Corner radius
default
Density
default
Tab width
default
Font size
default
UI font
Address bar hint
Keyboard
Shortcuts
Enable keyboard shortcuts
When off, all Alt + key shortcuts are disabled.
New Tab
Alt + T
Close Tab
Alt + W
Reload Page
Alt + R
Bookmark Page
Alt + D
Focus URL Bar
Alt + L
Settings
Alt + ,
Toggle Logs
Alt + G
Element Inspector
Alt + I
Recent History
Alt + H
Metrics
Alt + M
Toggle Fullscreen
Alt + K
Find in Page
Alt + F
AI Assistant
Alt + A
Bookmarks Bar
Show Bookmarks Bar
Always show the bookmarks bar below the
address bar
New Tab Wallpaper
Background image
Loading...
Home Page Clock
Show clock on new tab
Display current time and date on the home
screen
24-hour clock
Show time in 24-hour format (e.g. 14:30
instead of 2:30 PM)
Language
Preferred language
Choose the language for the interface and spellcheck when supported.
Interactive Tour
Walk through 18 steps
covering navigation, search, bookmarks, ad blocking, metrics, browser logs,
page inspector, tabs, and the new tab page. Takes under a minute.
18
steps
Under a
minute
About Gust
Credits
GUST team
—
The team behind GUST
Wisp Protocol
—
Mercury Workshop
WebSocket proxy tunnelling
libcurl.js
—
ading2210 & contributors
curl compiled to WebAssembly
PDF.js
—
Mozilla Foundation
v4.2.67 · PDF rendering engine
Font Awesome
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Fonticons, Inc.
v6.5.1 · Icon library
iso-639-1
—
Meikidd
v2.1.11 · ISO language codes
JetBrains Mono
—
JetBrains s.r.o.
Monospace font (code viewer)
Space Grotesk
—
Florian Karsten
UI font via Google Fonts
IndexedDB & Web APIs
—
W3C / WHATWG
Proxy cache, storage, sessions
Fallback Behaviour
Enable fallback on load error
When a page fails to load (network error, bad status, timeout), automatically retry using the fallback proxy before showing an error page.
Log retries
All fallback retry attempts are always written to the request log, including which WISP server was used.
always on
Fallback WISP Server
Used only when the primary WISP server is unreachable or returns an error. Leave blank to disable.
Retry Policy
Max retry attempts (main)
How many times Gust retries on the primary WISP server before switching to the fallback.
3
Max retry attempts (fallback)
How many times Gust will attempt the fallback WISP before giving up and showing an error.
3
Retry delay (seconds)
Wait time between each retry attempt before switching to the fallback server.
3
Error Triggers
Fallback on HTTP 5xx errors
Retry via fallback when the origin server returns a 500-level status code.
Fallback on timeout
Retry via fallback when the primary server exceeds the connection timeout.
Fallback on DNS failure
Retry via fallback when the hostname cannot be resolved.
Advanced Rendering
Script tags loaded per page
Maximum number of
<script src> tags loaded when rendering a page. Higher values help complex React / Next.js / Vite apps but use more memory. Default: 250.
250
Images prefetched per page
Maximum number of images fetched and inlined before the page is displayed. Lower values speed up initial load on image-heavy sites; higher values improve visual completeness. Default: 300.
300
Media Range Requests
Enable Range request support
Forward
Range headers and handle 206 Partial Content responses. Fixes video/audio seeking and embedded media playback on most sites. Unknown File Types
Auto-download unknown files
When Gust receives a file it can't display (e.g. .zip, .exe), automatically trigger a browser download instead of showing an error page.
PDF Viewer
Built-in PDF viewer
Render PDF files inline using a built-in viewer powered by PDF.js instead of downloading them.
Image Viewer
Built-in image viewer
Display images (PNG, JPEG, GIF, WebP, SVG…) in a clean fullscreen viewer with zoom and pan.
Video Player
Built-in video player
Play video files (MP4, WebM, OGG…) in a built-in player with controls.
Audio Player
Built-in audio player
Play audio files (MP3, OGG, FLAC, WAV…) in a styled player instead of downloading.
Text / Code Viewer
Built-in text viewer
Display plain text, JSON, XML, CSV, and source code files inline with syntax-aware formatting.
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Elements
GUST Assistant [experimental]
Page Context
GUST Assistant
Ask questions about the page you're browsing, get help with site content, or just chat.
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