Cookies Policy
Last updated: April 2, 2026
We only use cookies that are necessary to provide our service. No advertising trackers. No third-party profiling.
Types of Cookies We Use
Essential Cookies
RequiredRequired for core authentication, security, and service functionality. These cannot be disabled without breaking the Service.
Functional Cookies
Remember your preferences such as theme mode (dark/light) and language settings. Disabling these will reset preferences on each visit.
Analytics Cookies
A random visitor session ID (slp_vsid) stored in sessionStorage to track anonymous page views, time on site, device type, country, and traffic source for our internal platform analytics. No personal data is stored.
Device Identifier
An anonymous UUID stored in an HTTP-only cookie to enforce free trial limits for unauthenticated users. Contains no personal information.
What Are Cookies?
Cookies are small text files stored on your device (computer, phone, or tablet) when you visit a website. They are widely used to make websites work efficiently, remember your preferences, and provide information to site owners.
Cookies are not viruses. They cannot run programs or install software. They contain only text data. Modern browsers give you full control over which cookies to accept, and our site will function (with limited personalization) even if you disable non-essential cookies.
Some cookies are stored temporarily for the duration of your browser session and deleted when you close the browser (session cookies). Others persist for a set period (persistent cookies) to remember your preferences across visits.
Complete Cookie List
The following table lists every cookie SmartLink Pilot may place on your device, its purpose, and how long it lasts.
| Cookie Name | Purpose | Duration | Category |
|---|---|---|---|
| next-auth.session-token | Maintains your authenticated login session across browser sessions | 30 days | Essential |
| next-auth.csrf-token | Security token that prevents cross-site request forgery attacks | Session | Essential |
| next-auth.callback-url | Stores the page to redirect to after successful login | Session | Essential |
| device_id | Anonymous random UUID used to track free trial link usage (no PII) | 1 year | Device |
| slp_vsid | Random visitor session ID stored in sessionStorage for internal analytics (device, country, pages visited, time spent). Cleared when browser tab is closed. Contains no personal data. | Session | Analytics |
| smartlink-theme | Stores your chosen theme preference (dark/light mode) in localStorage | Persistent | Functional |
| __Secure-next-auth.session-token | Secure version of session token used in production HTTPS environments | 30 days | Essential |
| Google AdSense cookies | Served only to free-tier users. Google may place cookies (e.g., IDE, DSID) for ad personalization and measurement. Paid subscribers are not served ads and these cookies are not set for them. | Up to 13 months | Advertising |
We do not use Google Analytics or Facebook Pixel. We use our own internal visitor analytics system. Free-tier users may see Google AdSense ads; Google may use cookies for ad serving. Paid subscribers (Pro & Enterprise) are completely ad-free — no AdSense cookies are set for their sessions.
How to Manage & Delete Cookies
You can control and manage cookies in your browser settings. Please note that disabling essential cookies (session-token, csrf-token) will prevent you from logging in to SmartLink Pilot. Disabling functional cookies will reset your theme preference on each visit.
Google Chrome
Settings → Privacy & Security → Cookies and other site data → Manage cookies
Mozilla Firefox
Settings → Privacy & Security → Cookies and Site Data → Manage Data
Apple Safari
Preferences → Privacy → Manage Website Data
Microsoft Edge
Settings → Cookies and site permissions → Cookies and site data
iOS Safari
Settings → Safari → Advanced → Website Data
Android Chrome
Chrome menu → Settings → Site Settings → Cookies
GDPR & Legal Basis for Cookies
Essential Cookies — Legitimate Interest
Essential cookies are required to provide the service you have requested. We do not require consent for these cookies as they are necessary for the website to function.
Functional Cookies — Legitimate Interest
Functional cookies improve your experience by remembering your preferences. We use legitimate interest as the legal basis; you can opt out by clearing your browser data.
Device Identifier — Legitimate Interest
The anonymous device_id cookie is used to enforce our free trial limits, which is a legitimate business interest. It contains no personally identifiable information.
Visitor Analytics (slp_vsid) — Legitimate Interest
The slp_vsid session identifier is stored in sessionStorage (not a cookie) and is used for our internal visitor analytics. It contains no personally identifiable information and is automatically cleared when you close the browser tab.
Google AdSense (Free Users Only) — Consent / Legitimate Interest
Google AdSense cookies are placed only for free-tier users to support the free plan through advertising revenue. Paid subscribers are exempt from all advertising cookies. Free users may opt out of personalized ads at g.co/adsettings.
See also: Privacy Policy · Terms of Service