PDF Reader Union Privacy Policy
Effective Date: July 9, 2025
Welcome to the PDF Reader Union application (hereinafter referred to as the "Application"). This Privacy Policy is intended to clearly explain to you how we collect, use, store, and share your information during your use of this Application, as well as your rights under the General Data Protection Regulation (GDPR). Please read and understand the entire content of this policy carefully before using this Application. Your use of this Application constitutes your consent to our processing of your relevant information in accordance with this policy.
I. Your GDPR Rights
According to the GDPR, you have the following rights:
(I) Right to Know
You have the right to know whether your personal data is collected and the type, source, purpose, storage period, sharing objects and other information.
(II) Right to Access
You have the right to access the personal data we collect about you. For third-party data access, please refer to their policies.
(III) Right to Correction
If you find that your personal data is inaccurate, you have the right to request correction. Third-party data correction can be directly requested to be processed.
(IV) Right to Deletion (Right to be Forgotten)
You have the right to request deletion of data when the data is not needed, consent is withdrawn and there is no legal basis, processing is illegal or required by law. For deletion of third-party data, please refer to their policies.
(V) Right to Restrict Processing
You have the right to request restriction of processing when the accuracy of the data is questioned, processing is illegal and you do not want to delete it, the data is not needed but is needed to protect your rights, and the objection to processing is being verified. This right can also be exercised against third-party processing.
(VI) Right to Data Portability
You have the right to request personal data in a structured, commonly used, machine-readable format, or directly transmitted to a designated data controller. For third-party data portability, please refer to their provisions.
(VII) Right to Objection
You have the right to object to our processing of your data based on legitimate interests based on specific circumstances, including objecting to sharing it with third parties for advertising. You can also object to third-party processing.
(VIII) Right to Withdraw Consent
If you have agreed to the collection and use of personal data (including sharing it with third parties), you have the right to withdraw your consent at any time. Withdrawal does not affect the legality of the previous processing.
(IX) Right to complain
If you are located in the European Economic Area and believe that data processing violates the GDPR, you have the right to lodge a complaint with the data protection regulator of your member state.
How to exercise rights
To exercise the above rights, you can send an email to [email protected]. The subject of the email must indicate the name of the right to be exercised, and explain the relevant needs, reasons or provide necessary identification information in the email. We will process and respond as soon as possible after receiving the request.
II. Types and sources of information collected
When you use PDF Reader Union, we will collect relevant information based on the normal operation of the application functions, as follows:
(I) Device operation information
To ensure that the app runs stably on your device, we will obtain the device name, brand, model, operating system version, screen resolution, network type, IP address, etc. This information is automatically generated by running the app and is only used to adapt the device and optimize performance.
(II) Functional Usage Information
The records generated when you use the application functions will be collected, including the number of times you read PDF, the duration, zoom ratio, page jump, the frequency of converting images to PDF, the number of images, format and parameter settings, the number of clicks and dwell time of each functional module, the application startup and shutdown time, etc. This information is used to analyze usage habits and improve service experience.
(III) Basic file information
When opening or processing PDFs and images, we will collect basic information such as file name, size, format, storage path within the accessible range of the application, etc., only to realize functions such as file opening and conversion, and never involve file content.
III. Use and sharing of information
(I) Internal use scope
The collected information is mainly used to: ensure the normal operation of the application and optimize functional design; carry out analysis services, explore user behavior patterns to promote application iteration; identify and prevent security risks and protect usage safety.
(II) Third-party interaction
Advertising service: Non-personal identification information (such as device information and usage information) will be shared with third-party advertisers for personalized advertising recommendations, and the shared information will only be used for delivery and effect analysis. The third-party advertising services involved include Google Admob, Pangle, Topon, Vungle, etc.
Analysis services: De-identified, anonymized aggregated information may be provided to professional analysis agencies. Such information cannot identify personal identities. The services involved include Google Play Services, Firebase, etc.
(III) Restrictions on information transfer and disclosure
Except for your explicit consent, legal requirements, or necessary circumstances to protect legitimate rights and interests, we will not transfer or disclose your information. In the event of mergers, acquisitions, etc., we will ensure that the transferee abides by the privacy policy and notify you in advance.
IV. Third-party services
This application contains a variety of third-party services. These third-party service providers may collect and process your information in accordance with their own privacy policies, as follows:
Google Play Services: For details of its privacy policy, please see https://policies.google.com/privacy?hl=en
Google Admob: For details of its privacy policy, please visit https://transparency.google/our-policies/product-terms/google-admob/
Firebase: For details of its privacy policy, please visit https://firebase.google.com/support/privacy/
Facebook: For details of its privacy policy, please visit https://www.facebook.com/about/privacy
Pangle: For details of its privacy policy, please visit https://www.pangleglobal.com/privacy
Topon: For details of its privacy policy, please visit https://www.toponad.com/en/privacy-policy
Vungle: For details of its privacy policy, please visit
We cannot control the information processing behavior of third-party service providers. We recommend that you carefully read the privacy policies of each third-party service provider when using this application to understand their information collection, use, sharing, etc.
We will screen and manage the third-party service providers we cooperate with and require them to comply with relevant laws and regulations and privacy protection principles to protect your information security. However, if you find that a third-party service provider has violated regulations in processing your information, you can contact the third-party service provider directly or inform us through the contact information described in Article 9 of this Policy. We will do our best to assist you in safeguarding your legitimate rights and interests.
V. Information Storage Rules
Retention period: There is no fixed storage period, which will be determined in accordance with GDPR and related regulations, combined with the shortest necessary time to achieve the purpose of use. When the information is no longer needed and there is no legal requirement to retain it, it will be securely deleted or anonymized. Please refer to the privacy policy of the third-party information retention period.
Security: We use a variety of security technologies and measures to protect your information security, including but not limited to data encryption storage, strict access control, etc., to prevent information from being unauthorized access, leakage, tampering or damage. At the same time, we will provide privacy protection training to employees, strengthen employees' information security awareness, and ensure the security of the information processing process. It should be noted that although we have implemented the above security measures, given the increasingly complex network environment and the continuous development of information technology, it is difficult for us to ensure that the information is 100% secure.
VI. Personalized advertising opt-out method
Your mobile device may allow you to opt out of using information related to the apps you use in order to serve you ads tailored to your interests. The specific steps are as follows:
On Android devices, you can choose "Opt out of interest-based ads" or "Opt out of ad personalization."
On iOS devices, you can choose "Limit ad tracking."
After opting out of personalized ads, you will still receive ads, but the relevance of the ads may be reduced.
VII. Protection of information of minors
This application is not intended for minors under the age of 13 and does not actively collect their information. If it is collected by mistake, it will be deleted immediately after being discovered.
VIII. Update of privacy policy
We may revise the policy according to changes in regulations, functions or services. The revised policy will be published on this page and the effective date will be indicated. Continued use means acceptance.
IX. Contact us
If you have any questions or need to exercise your rights, you can contact us in the following ways:
Email: [email protected]
We will handle and reply as soon as possible.