PDF Reader App Privacy Policy

This Privacy Policy explains the policies and procedures we follow regarding the collection, use, and disclosure of your personal information when you use our services. It also clearly informs you of your legally protected privacy rights and the specific legal protections for your privacy.

We will use your personal data to provide services, ensure the normal operation of services, and continuously optimize the service experience. Please note that by using this service, you acknowledge that you fully understand and agree to our collection and use of your relevant information in accordance with this Privacy Policy.

Collection and Use of Your Personal Data

Automatically Collected Usage Data

When you use this service, the system will automatically collect "Usage Data," which includes the following categories:

Basic Access and Device Identification: This covers your device's IP address, accessed service pages, access time/date, page dwell time, unique device identifiers (such as IDFA), and other diagnostic data;

Crash Log Data: This specifically collects information related to service anomalies, including the time of the crash, the page/function module that triggered the crash, device error information, etc., to quickly locate the cause of service failures and promptly fix problems;

Mobile Device Access Information: If you use the service through a mobile device, we will also collect device type, operating system details (name, version, build version), and mobile browser type;

To improve user experience, we have integrated data statistics tools into the app. This tool does not collect core privacy data; it is only used for CRASH issue localization and A/B testing of new features/designs. Specific information collected includes:

Basic Device Information: Screen size, device model;

Device System Information: Operating system name, operating system version, system build version, time zone, system language;

Application-Related Information: Application name, application build version, app version number, SDK name and SDK version.

Your Consent and Our Use of Your Personal Data

Except as otherwise provided in this Privacy Policy, we will not transfer any of your personal data to any third party.

Our company may use your personal data for the following purposes:

Providing and maintaining services: Ensuring the normal operation and compatibility of services, while monitoring service usage to ensure stable and available services;

Processing and responding to your requests: Receiving and processing your inquiries, complaints, and feature requests;

Service optimization and fault repair: Analyzing the causes of service anomalies, fixing vulnerabilities, and optimizing service processes and feature design based on user access habits;

Security protection and risk control: Identifying abnormal access behavior, preventing security risks, and protecting your data security;

Product iteration and feature development: Analyzing user feedback on existing features to provide data support for new feature development and product iteration;

Compliance communication and information notification: Pushing important service-related notifications to you, ensuring you are informed of service updates, provided that compliance with laws and regulations is met;

Data statistics and compliance filing: Anonymizing and statistically analyzing collected personal data in accordance with laws, regulations, and regulatory requirements for compliance filing and business data analysis, without disclosing your personal identity information during the statistical process.

We may share your personal information in the following situations:

With Service Providers - We may share your personal information with service providers to monitor and analyze usage of our services and to show you advertisements to help support and maintain our services.

Third-Party Advertisers - When you visit this application, we may use third-party advertising companies to serve ads. These companies may use information contained in cookies about your visits to the application to optimize the effectiveness of marketing campaigns and provide advertisements for goods and services that may interest you. We will never share any data that we track in the application with third-party advertisers.

If you do not wish to receive personalized ads, you can opt out through your device's system settings. The specific steps are as follows: Open your device's "Settings," go to "Privacy Protection" (or "Privacy" on some devices), select the "Advertising" option, and enable the "Limit Ad Tracking" function (or "Oppose Ad Personalization" on some devices). After completing the settings, third-party advertisers will not be able to provide personalized advertising services based on your device data. Please note that after opting out of personalized advertising, you may still see ads in the application, but the ad content will no longer be matched based on your interests and preferences.

Analytics - We use Google Analytics, a third-party analytics tool provided by Google (whose core function is to track and report website traffic), to help measure traffic and usage trends for our services. This tool collects information such as your device, location, and app usage. We use the information from Google Analytics only for customizing and personalizing your app experience, and for statistical and analytical purposes. Google uses the collected data to track and monitor the use of our services, and this data may also be shared with other Google services. Google has the right to contextualize and personalize ads on its ad network based on this data.

You can opt out of certain Google Analytics features through your mobile device settings (such as device ad settings) or by following the instructions provided in Google's Privacy Policy: https://policies.google.com/privacy?hl=en

With Business Partners: We may share your information with our business partners to provide you with certain products, services, or promotions.

Retention of Your Personal Data

We will retain your personal data only for the time necessary for the purposes specified in this Privacy Policy. We will retain and use your personal data to the extent necessary to comply with our legal obligations (e.g., if we are required to retain your data to comply with applicable laws), resolve disputes, and enforce our legal agreements and policies.

The company will also retain usage data for internal analysis purposes. Usage data is typically retained for a short period unless it is used to enhance security or improve the functionality of our services, or we are legally obligated to retain it for a longer period.

Personal Data Disclosure Guidelines

We strictly comply with legal and regulatory requirements and may disclose your personal data only in the following necessary scenarios, as detailed below:

Business Transaction-Related Disclosures

In the event of a significant business transaction such as a merger, acquisition, or asset sale, your personal data may be transferred as part of the transaction-related assets. In this case, we will formally notify you via in-app notifications, emails, or other easily accessible methods before your personal data is transferred to a new entity and becomes subject to the new entity's privacy policy, ensuring you are aware of the changes to the data recipient and privacy policy.

Law Enforcement-Related Disclosures

Subject to compliance with laws and regulations, if our company receives a valid legal document (such as a summons or investigation order) or legitimate request from a public institution (such as a court, procuratorate, public security organ, or other government department), and this request explicitly requires the disclosure of your personal data to cooperate with law enforcement work (such as case investigation or public safety protection), our company will disclose the necessary personal data to the relevant public institution in accordance with laws and regulations. However, we will strictly control the scope of disclosure, providing only the minimum data required for law enforcement, and avoid leaking irrelevant information.

Personal Data Security

The security of your personal data is our primary responsibility. To this end, our company has established a multi-dimensional security protection system. Through management security measures (such as formulating data access control rules), technical security measures (such as encrypted data transmission), and physical security measures (such as storage device access control), we jointly prevent the leakage, loss, misuse, or unauthorized access of personal data, and fully protect the security of your personal information.

It should also be noted that, given the characteristics of internet transmission and the objective limitations of electronic storage technology, no data transmission method or electronic storage method can achieve 100% absolute security. While we have adopted commercially recognized security standards and protection measures to continuously improve our data security capabilities, we cannot completely eliminate unforeseen security risks. Therefore, we do not guarantee "absolute security." We also ask that you take care to safeguard your personal information and avoid disclosing sensitive data to others when using our services, so as to jointly maintain data security.

Your Rights Under GDPR and CCPA

Our company respects your personal data rights and strictly adheres to international and regional data protection regulations to ensure that you can exercise your data-related rights in accordance with the law. The following explains your rights under the GDPR (General Data Protection Regulation) and CCPA (California Consumer Privacy Act), and how to exercise those rights:

Your Rights Under GDPR (Applicable to Users Located in the EU/EEA)

If your personal data processing is governed by GDPR, you are legally entitled to the following core rights: Right to Data Access: The right to request us to provide you with the personal data information we have collected, including access to, viewing, or obtaining copies of the information we hold about you. Right to Data Correction: If the personal data we hold in your possession is incomplete or inaccurate, you have the right to request that we correct it promptly.

Right to Object to Data Processing: If we process your personal data based on a “legitimate interest” and that such processing conflicts with your specific circumstances, you have the right to object; you also have the right to object to our processing of your personal data for direct marketing purposes.

Right to Erasure of Data (“Right to Be Forgotten”): When we lack a legitimate reason to continue processing your personal data, you have the right to request the deletion or removal of the relevant data.

Right to Data Portability: You have the right to request that we provide your personal data to you or a third party designated by you in a structured, commonly used, and machine-readable format; this right applies only to automated data for which you initially consented to processing or for which we process data to fulfill our contract with you.

Right to Withdraw Consent: You have the right to withdraw your previous consent to the processing of your personal data; withdrawing consent may affect your access to certain features of the service.

Right to Complain: If you believe that our processing of your personal data does not comply with GDPR regulations, you have the right to file a complaint with the local data protection authority in your European Economic Area (EEA).

Your Rights Under the CCPA (California Consumer Privacy Act) (Applicable to California Residents)

If you are a resident of California, you have the following consumer rights under the CCPA:

Right to Know Your Data: You have the right to request that we disclose the following information (covering data processing over the past 12 months):

Categories of your personal data collected (e.g., device information, location information);

Sources of your personal data collection;

Commercial purposes for collecting or sharing your personal data;

Categories of third parties who share your personal data with us;

Specific personal data we hold about you.

Right to Erasure: You have the right to request that we erase your personal data collected over the past 12 months (except where legal requirements mandate retention).

Right to Non-Discrimination: You may not be discriminated against for exercising your consumer rights under the CCPA, including but not limited to price increases or reduced service quality.

How to Exercise Your Rights

You can exercise your rights under the GDPR or CCPA by contacting us. To ensure your information security, we may require you to provide identity verification materials before processing your request to confirm that the requester is the data subject. We will strive to process and respond to your reasonable requests as quickly as possible within the time limits stipulated by laws and regulations.

GDPR Supplementary Note: If, after you exercise your rights under GDPR, we are unable to provide some service functions due to the loss of necessary data support, we will explain the specific impact to you in advance.

Children's Privacy

Our services are not directed at anyone under the age of 13. We do not knowingly collect personally identifiable information from anyone under the age of 13. If you are a parent or guardian and you know that your child has provided us with personal data, please contact us. If we discover that we have collected personal data from anyone under the age of 13 without parental consent, we will take steps to remove that information from our servers.

Links to Other Websites

Our services may contain links to other websites that we do not operate. If you click on a third-party link, you will be directed to that third party's website. We strongly recommend that you review the privacy policy of each website you visit.

We have no control over the content, privacy policy, or practices of any third-party website or service and assume no responsibility for them.

Changes to this Privacy Policy

We may update our privacy policy from time to time. We will notify you of any changes by posting the new privacy policy on this page.

We recommend that you review this Privacy Policy periodically for any changes. Changes to this Privacy Policy will take effect upon posting on this page.

Contact Us

Please note that sending us your feedback or bug reports is entirely voluntary. If you are concerned about the misuse of your personal data, or if you would like to learn more about our Privacy Policy and its implications, please feel free to email us at [email protected]. We will strive to provide clear answers to your questions promptly.