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The browser settings panel lets you customize how SERP Lens renders pages, interacts with servers, and displays Google search results. Changes apply to all open tabs.

Device emulation

Switch between desktop and mobile views to see how pages render on different devices:
  • Mobile devices — choose from a list of predefined devices (iPhone, Android, tablets)
  • Fit to view — scales the emulated device to fit the available space
  • Actual size — renders at the device’s native resolution (1:1 scale)
Device emulation changes the viewport size, user-agent, and touch behavior to match the selected device.

User-agent

Override the default browser user-agent to browse as a different client:
  • Browse as Googlebot to see how Google’s crawler experiences your site
  • Browse as Bingbot, mobile crawlers, or other bots
  • Set a custom user-agent string for specialized testing
Combine user-agent switching with the Crawling panel to test whether your server responds differently to bot user-agents — some WAFs or CDNs block specific bots at the server level.

Network throttling

Simulate different connection speeds to test page performance under real-world conditions. Useful for evaluating Core Web Vitals on slower connections.

JavaScript, CSS, and cookies

Toggle individual browser capabilities on or off:
SettingEffect
JavaScriptDisable JS to see how pages render without it — useful for testing crawler rendering
CSSDisable CSS to see the raw document structure
CookiesDisable cookies to test cookie-dependent behavior
CachingDisable browser cache to force fresh requests on every load

Google search settings

These settings customize how Google search results appear when you search from the browser:
SettingDescription
Google domainSearch on a specific Google TLD (google.com, google.co.uk, google.de, etc.)
LanguageSet the Google interface language
Time filterRestrict results by time period (past hour, day, week, etc.)
SafeSearchToggle Google’s SafeSearch filter
PersonalizationDisable Google’s personalized results for neutral rankings
Hide adsRemove Google Ads from the search results page
Custom URL parametersAppend custom parameters like gl=us&hl=en to search URLs
Google search settings work alongside VPN. Use the VPN for IP-based location, then add gl and hl parameters for explicit geo and language targeting to reinforce the location signal. See geo accuracy for details.

Geolocation

Enable browser geolocation and set custom coordinates. This tells the page your reported geographic position — useful for testing location-aware features like maps and local search.

Applying settings

Click Apply to save your settings. All open tabs reload with the new configuration. Settings persist until you change them again.

Next steps