Cookie Policy

What cookies and similar technologies are

Cookies are small text files stored by a browser. Local storage saves preferences in the browser. Web beacons and pixels are small technologies that can record when a page, message, or advertisement is viewed or used. First-party technologies are associated with screenmetriclab.com; third-party technologies are associated with another provider such as Google.

Essential cookies and storage

The site may use a session cookie and an XSRF security token to support page security, requests, and normal framework behavior. The configured session lifetime is up to two hours unless the browser session or server ends sooner. Essential technologies cannot be disabled through the site control because the website may not function securely without them.

The consent choice is stored in local storage under screenmetriclab_consent_v1. It records whether analytics was allowed, confirms that advertising is off, and includes the time of the latest choice. It remains until the visitor changes it or clears browser storage.

Local tool processing

Screen measurements, viewport values, DPR, browser context, calculator inputs, and comparison selections are used to render results on the current page. These values do not require advertising or analytics cookies and are not intentionally stored in a ScreenMetricLab account.

Google Analytics cookies

Google Tag Manager loads with analytics and advertising storage denied. Before analytics permission is granted, consent-aware Google tags do not read or write analytics cookies, but may send the consent state and limited measurements without cookies for basic audience measurement and modeling.

If a visitor allows analytics, Google Analytics may use cookies such as _ga and _ga_<container-id> to distinguish browsers, maintain session information, and measure visits, traffic sources, pages, general device context, and selected non-sensitive interactions. Exact names and duration can vary with Google configuration and product updates.

Google AdSense and advertising cookies

ScreenMetricLab does not currently serve ads. If Google AdSense is enabled, Google and participating third-party vendors or ad networks may use cookies, web beacons, pixels, local storage, IP addresses, and other identifiers to serve and measure ads, apply frequency limits, prevent invalid traffic, generate reports, and protect their systems.

Google advertising cookies may be set from domains such as google.com, doubleclick.net, googlesyndication.com, or googleadservices.com. Google may use first-party cookies when third-party cookies are unavailable. Other authorized vendors may set technologies from their own domains under their own policies.

Personalized and non-personalized advertising

Personalized advertising can use prior activity, interests, demographic inferences, general location, or visits to this and other sites to select ads. It will be requested only when an appropriate legal basis and consent signal are available.

Non-personalized advertising is selected mainly from the current page, general location, browser type, or current query. It may still use cookies or similar identifiers for frequency capping, aggregated reporting, security, and fraud prevention. Limited ads may also use storage required for invalid-traffic detection.

Third-party vendors and ad networks

Google may allow certified ad networks, authorized buyers, and advertising technology providers to participate in ad delivery. Their technologies, purposes, and retention practices can differ. When advertising is enabled, the applicable consent platform will identify available vendors and purposes so visitors can make the choices required in their region.

Consent and cookie preferences

On a first visit, ScreenMetricLab offers equal access to Allow analytics, Essential only, and Customize choices. The Customize panel explains the available categories. Analytics and advertising storage stay denied until a visitor allows analytics.

Use Cookie settings in the footer at any time to review or change the choice. Withdrawing consent stops future analytics storage and full interaction measurement on ScreenMetricLab; it does not automatically erase cookies already set by another provider, which can be cleared through browser controls.

Before personalized ads are enabled for visitors in the EEA, United Kingdom, or Switzerland, ScreenMetricLab will implement a Google-certified consent management platform. The site will also honor recognized opt-out signals, including Global Privacy Control, where required by applicable law.

How to opt out of personalized advertising

• Use Google My Ad Center to turn off or limit personalized Google ads.
• Use the Network Advertising Initiative or Digital Advertising Alliance opt-out tools for participating companies.
• Use Your Online Choices where that service is available.
• Block or delete cookies in browser privacy settings.
• Enable Global Privacy Control in a supported browser or extension.
• Use the consent platform that will accompany advertising where required.

Retention and browser controls

Essential session cookies expire according to the configured session lifetime or browser behavior. The local consent record remains until changed or cleared. Google and other providers control the lifetime of their cookies and may update those periods; their current documentation and the browser storage panel provide the most specific record.

Most browsers allow visitors to inspect, block, or delete cookies and site data. Blocking all cookies can affect security, saved choices, or some page behavior. Clearing site data will also remove the stored consent choice, so the banner may appear again.

Updates and contact

This policy will be updated when cookie categories, analytics configuration, advertising partners, consent tools, or legal requirements change. The revised date at the top identifies the current version.

For questions about cookies or a privacy request, email support@screenmetriclab.com or use the Contact page.