Cookie Notice
Version 1.0, effective as of 24 March 2026
This Cookie Notice explains how AvaloniaUI OÜ and its affiliates, where applicable, use cookies and similar technologies on our websites and related web services that link to this notice.
Cookies are small text files stored on your device when you visit a website. We also use similar technologies such as local storage, session storage, pixels, tags, and scripts. In this notice, we refer to all of these as cookies unless a distinction matters.
We use cookies to keep our websites working properly, understand how visitors use them, and, where you allow it, support messaging and personalisation. We do not use advertising cookies for targeted advertising.
Cookie categories
1. Strictly necessary cookies
These cookies are required for the operation of our websites and services. They include cookies and storage items used for security, session management, authentication, fraud prevention, load balancing, and remembering your privacy choices. Without these cookies, core parts of the website may not function correctly.
Examples of use include:
| Purpose | Examples |
|---|---|
| Security and fraud prevention | Security tokens, abuse prevention, CSRF protection |
| Authentication and session management | Sign-in state, account session continuity |
| Consent management | Remembering your cookie preferences |
| Core site operation | Routing, load balancing, and essential service delivery |
These cookies are always active.
2. Analytics and measurement cookies
These cookies help us understand how visitors use our websites, measure performance, diagnose issues, improve content and user journeys, and understand engagement with pages and features.
We currently use the following services in this category:
| Service | What it does |
|---|---|
| Google Analytics 4 | Provides website analytics and measurement |
| Microsoft Clarity | Provides heatmaps, session insights, and behavioural analytics |
| Leadfeeder by Dealfront | Helps us understand company-level website visits and engagement |
| Plausible | Provides privacy-focused website analytics |
These cookies are optional and will only be used where required consent has been provided.
3. Messaging and personalisation cookies
These cookies support messaging, journey personalisation, and related product or website experiences. They may be used to recognise a returning visitor, associate website activity with a known user after identification, or tailor communications and on-site journeys based on actions you take.
We currently use the following service in this category:
| Service | What it does |
|---|---|
| Customer.io | Supports messaging, user journeys, and personalisation based on website activity and user identification |
These cookies are optional and will only be used where required consent has been provided.
4. Advertising cookies
We do not currently use advertising cookies for targeted advertising on our websites.
Where Google tag or related tooling is present for analytics implementation, advertising-related consent signals remain denied by default unless and until our practices change and this notice is updated.
How we apply your choices
When you visit our websites, you may be given the option to accept, reject, or manage non-essential cookies.
If you reject non-essential cookies:
| Category | Outcome |
|---|---|
| Strictly necessary | Remains active |
| Analytics and measurement | Disabled, except where a tool operates without cookies and we rely on a lawful non-consent basis where permitted |
| Messaging and personalisation | Disabled |
| Advertising | Not used |
If you accept analytics and measurement cookies, analytics services such as Google Analytics 4, Microsoft Clarity, Leadfeeder, and any consent-gated implementation of Plausible may operate according to your choice.
If you accept messaging and personalisation cookies, Customer.io may store identifiers or related local storage items needed to support recognised journeys, messaging, and personalisation.
You can change your preferences at any time using the Cookie settings button in the footer of the relevant website.
Detailed list of trackers and storage technologies
The exact cookies and storage items present on a page may vary depending on which parts of our websites you use, whether you are signed in, and which optional categories you have accepted.
Strictly necessary
| Tracker or storage item | Service | Category | Purpose | Typical duration or notes |
|---|---|---|---|---|
| Cookie preference cookie | Avalonia UI | Strictly necessary | Stores your consent choices | 1 year |
| Session and authentication cookies | Avalonia UI | Strictly necessary | Maintains signed-in sessions and secure access to account areas | Short-lived |
| Security and anti-forgery tokens | Avalonia UI | Strictly necessary | Helps protect forms, sign-in flows, and other security-sensitive actions | Usually session-based or short-lived |
| Infrastructure cookies or equivalent storage | Avalonia UI or hosting providers | Strictly necessary | Supports routing, load balancing, and core site operation | Varies by service configuration |
Analytics and measurement
| Tracker or storage item | Service | Category | Purpose | Typical duration or notes |
|---|---|---|---|---|
_ga | Google Analytics 4 | Analytics and measurement | Distinguishes unique users | Typically 2 years |
_ga_<container-id> | Google Analytics 4 | Analytics and measurement | Persists session state | Typically 2 years |
_clck | Microsoft Clarity | Analytics and measurement | Persists the Clarity user ID and preferences for a site | First-party cookie |
_clsk | Microsoft Clarity | Analytics and measurement | Connects multiple page views into a single Clarity session recording | First-party cookie |
CLID | Microsoft Clarity | Analytics and measurement | Identifies when Clarity first saw a user on a site using Clarity | Third-party cookie |
ANONCHK | Microsoft Clarity | Analytics and measurement | Indicates whether a Microsoft identifier is transferred | Third-party cookie |
MR | Microsoft Clarity | Analytics and measurement | Indicates whether to refresh a Microsoft identifier | Third-party cookie |
MUID | Microsoft Clarity | Analytics and measurement | Identifies unique web browsers visiting Microsoft sites | Third-party cookie |
SM | Microsoft Clarity | Analytics and measurement | Synchronises a Microsoft identifier across Microsoft domains | Third-party cookie |
_lfa | Leadfeeder by Dealfront | Analytics and measurement | Recognises returning visitors for website visitor tracking | Typically 1 year |
_lfa_consent | Leadfeeder by Dealfront | Analytics and measurement | Stores visitor consent status when consent manager support is enabled | Typically 2 years |
_lfa_test_cookie_stored | Leadfeeder by Dealfront | Analytics and measurement | Temporarily checks whether the browser supports cookies | Expires immediately |
_lfa_expiry | Leadfeeder by Dealfront | Analytics and measurement | Local storage value storing the duration for the Leadfeeder client ID | Local storage |
| No cookie by default | Plausible | Analytics and measurement | Privacy-focused analytics without cookies in its standard implementation | Plausible’s standard setup is cookieless |
Messaging and personalisation
| Tracker or storage item | Service | Category | Purpose | Typical duration or notes |
|---|---|---|---|---|
ajs_anonymous_id | Customer.io Data Pipelines JavaScript source | Messaging and personalisation | Stores an anonymous identifier for a visitor | Usually up to 1 year, implementation-dependent |
ajs_user_id | Customer.io Data Pipelines JavaScript source | Messaging and personalisation | Stores the identified user ID after identification | Usually up to 1 year, implementation-dependent |
ajs_group_id | Customer.io Data Pipelines JavaScript source | Messaging and personalisation | Stores a group or account identifier | Usually up to 1 year, implementation-dependent |
ajs_user_traits | Customer.io Data Pipelines JavaScript source | Messaging and personalisation | Stores user traits locally | Cookie or local storage, implementation-dependent |
ajs_group_properties | Customer.io Data Pipelines JavaScript source | Messaging and personalisation | Stores group properties locally | Cookie or local storage, implementation-dependent |
_cioanonid | Customer.io legacy web SDK | Messaging and personalisation | Stores an anonymous ID for an unidentified visitor | Typically up to 365 days |
_cioid | Customer.io legacy web SDK | Messaging and personalisation | Stores the ID used after a person is identified | Typically up to 365 days |
Not every Customer.io storage item listed above will necessarily be present. The exact identifiers depend on whether we are using the legacy web SDK or the newer Data Pipelines JavaScript source, and on the configuration applied to that implementation.
Google tag and consent mode
Where we use Google tag for analytics deployment, we configure consent controls so that analytics storage can be granted or denied based on your choice. Advertising-related consent signals, including ad_storage, ad_user_data, and ad_personalization, remain denied by default because we do not currently use advertising cookies for targeted advertising.
This means that:
| Your choice | Expected Google tag behaviour |
|---|---|
| No choice yet or non-essential cookies rejected | Analytics storage remains denied until updated by your consent choice |
| Analytics and measurement accepted | Analytics storage may be granted for GA4 |
| Messaging and personalisation accepted | Does not itself enable advertising cookies |
| Advertising | Not used on our websites at this time |
Managing cookies
You can manage your cookie preferences at any time using the Cookie settings button in the footer of the relevant website.
Most browsers also allow you to block or delete cookies through browser settings. Please note that blocking strictly necessary cookies may affect the availability or operation of some parts of our websites.
Changes to this Cookie Notice
We may update this Cookie Notice from time to time to reflect changes to our websites, technologies, service providers, or legal requirements. When we do, we will update the date at the top of this notice.
Contact us
If you have questions about this Cookie Notice or how we use cookies and similar technologies, please see our Privacy Policy or use the contact method listed on the relevant Avalonia UI website.