Qt Telemetry Statement

Version 2026-03-25

1. ABOUT THIS STATEMENT. This document explains how The Qt Company Oy and its relevant subsidiaries and affiliates (“Qt Group”, “We”,  “Qt”) products collect and use telemetry data. This Telemetry Statement supplements our Privacy Policy, which governs all personal data  processing by Qt Group, including telemetry. In any conflict between this Statement and the Privacy Policy, the Privacy Policy prevails.

2. WHAT IS TELEMETRY? Telemetry refers to the automated collection of technical and usage data generated by our software, and  transmitted to Qt Group for analysis. We use this data to understand how our products are used, identify and fix issues, improve performance,  and maintain security and licensing compliance.

3. WHAT WE COLLECT

3.1. The specific data collected may vary by product and version. The list below describes the categories of data Qt products may collect. The  most current details for each product are available in documentation at https://doc.qt.io. Further information on personally identifiable information and the handling thereof is noted in our Privacy Policy.

3.2. Aggregated or pseudonymized data. Qt Group also derives aggregated or pseudonymized statistics from telemetry (for example, the proportion of users on a given OS version, or average crash rates across a product release). Such derived data is not reasonably re-identifiable for any individual user or device and may be retained and used for product analytics, planning, and reporting without a fixed retention limit.

3.3. Crash reports data

3.3.1. Crash reporting is optional and strictly opt-in. Crash reports are transmitted only when you have explicitly enabled crash reporting.

3.3.2. We collect crash data to diagnose software errors, improve stability, and enhance product quality. Depending on the nature of the failure, a crash report may include application version information, operating system details, timestamps, configuration context, error messages, and stack traces. For more information on crash reports, see Section 9.3 below. 

4. WHAT WE DO NOT COLLECT. Through telemetry, Qt Group does not collect: (i) source code, intellectual property, or other creative work  you may produce; (ii) personal files, documents, or user-created content; (iii) passwords or authentication credentials; (iv) sensitive business data or proprietary information; (v) precise location data or GPS coordinates; or (vi) the actual content of your projects or applications. 

5. HOW WE USE TELEMETRY

5.1. At Qt Group, we use telemetry data to: (i) Identify and fix bugs and performance issues; (ii) optimise software performance and reliability, including Qt-hosted cloud services such as package distribution; (iii) enhance existing features and develop new capabilities based on usage patterns; (iv) support troubleshooting and technical issue resolution; (v) monitor security threats and vulnerabilities; and (vi) ensure licensing and contract compliance.

5.2. Qt Group may provide relevant telemetry data, e.g. download and usage data, to companies and institutions regarding their own Qt users for internal license compliance validation purposes. Some of this information may be personally identifiable but is always tied to the company or institution’s usage of Qt products and services.

5.3. Qt Group may use artificial intelligence (“AI”) and machine learning techniques to analyse telemetry data for purposes including anomaly detection, predictive analytics, and product improvement. AI systems do not make significant automated decisions affecting you without human oversight. Qt Group does not use AI systems for any high-risk AI uses. See the AI Governance section (Section 14) of our Privacy Policy.

6. YOUR CONTROLS

6.1. Mandatory telemetry. Licensing & compliance data collection is mandatory and cannot be disabled by the user of the licensed software. Specific product offerings with limited or restricted data collections may be offered by The Qt Company and must be documented in writing between the parties.

6.2. Optional telemetry. The following categories may be enabled or disabled by the user: (i) technical performance monitoring (including crash reporting); (ii) software identification; (iii) diagnostics; and (iv) usage analytics. 

6.3. How to opt out. You may opt out of optional telemetry through in-product settings or configuration tools. Detailed, up-to-date instructions for each product are available in the documentation at https://doc.qt.io.

7. Impact of opting out. Disabling optional telemetry may reduce our ability to provide proactive support and to identify issues affecting your use of licensed software. Core product functionality, maintenance, access to support, and security updates are not conditional on telemetry being enabled, unless otherwise specifically stated in the applicable product documentation.

8. DATA RETENTION AND SECURITY

8.1. Data is encrypted in transit and at rest. For further security information, see the Data Security section (Section 10) of our Privacy Policy and our ISO 27001:2022 certification page.

9. DATA SHARING

9.1. Telemetry data is used internally by authorised Qt Group personnel. Qt Group may also engage third-party service providers and professional advisers under appropriate confidentiality and data processing obligations. Where Qt Group shares telemetry data on an individually identifiable level, such sharing may be subject to disclosure where legally required or in connection with a business transfer. Further, as noted above in Section 5.2, telemetry data may be provided to your company or institution for the purpose of internal licence compliance. 

9.2. No sale of data. Qt Group does not sell your personal data to third parties. For complete information on legal bases and processing purposes regarding how Qt Group handles personal data, see the Purpose of Processing and Processing Activities sections (Sections 2–3) of our Privacy Policy.

9.3. Note on crash report content. Crash data is processed using Sentry (sentry.io)—a third-party error-monitoring service headquartered in San Francisco, California, USA—acting as our data processor under a data processing agreement and contractual arrangement. Crash reports are generated automatically and may unintentionally contain personal or business data such as file paths, usernames, or runtime context. We cannot guarantee that all crash reports will be entirely free of personal or sensitive information. We take reasonable technical and organisational measures to minimise unnecessary data collection -- including filtering and scrubbing where feasible -- and limit access to crash data to authorised personnel for debugging and quality improvement purposes only.

10. INTERNATIONAL TRANSFERS

10.1. Telemetry data may be processed in Finland, other EEA countries, and the United States. Transfers outside the EEA are made using Standard Contractual Clauses and other appropriate safeguards. See the Transfers Outside EU/EEA Region section (Section 7) of our Privacy Policy for complete details, including China PIPL compliance.

11. YOUR RIGHTS

11.1. You have rights regarding your telemetry data, including the right to request access, correct, delete, and object to processing. These rights are fully described in the Individual Rights section of our Privacy Policy.

11.2. To exercise your rights, contact gdpr@qt.io with "Telemetry Data Request" in the subject line. Please note that in certain situations, such as where required to retain information for contractual or legal purposes, Qt Group may not be able to fulfil a deletion or erasure request in full, dependent on legal, contractual, or regulatory obligations. 

12. CHANGES TO THIS STATEMENT. We may update this Statement from time to time. Material changes will be communicated via the Qt Group website and reflected in the "Last Updated" date above. 

13. CONTACT INFORMATION

13.1. Privacy & data requests: gdpr@qt.io. Technical support: Qt Customer Portal https://account.qt.io. Documentation: https://doc.qt.io. 

13.2. Postal address: The Qt Company Oy, Legal Department, Miestentie 7, 02150 Espoo, Finland