User Agreement

Effective Date:​ March 6, 2026

Welcome to PDFReaderMax (hereinafter referred to as "this Application"). Before using the services provided by this Application (especially the PDF reading, signing, and seal extraction features), please carefully read this User Agreement (hereinafter referred to as "this Agreement").

1. Service Content

This Application provides services for reading, editing, adding signatures to, extracting and managing seals on PDF documents. Main features include:
•  PDF Reading and Management:​ View, search, rename, and delete PDF files.
•  Electronic Signatures:​ Create handwritten signatures and add them to PDF documents.
•  Seal Extraction and Addition:​ Extract seal patterns from images and add them to PDF documents.
•  Seam Seal Function:​ Supports cross-page sealing (seam seal) functionality.

2. User Conduct Guidelines

2.1 Legal Use

You promise to use this Application solely for lawful purposes. You must not use this Application to engage in the following activities:
•  Forge, alter official documents, certificates, seals, or other illegal and criminal activities.
•  Infringe upon the intellectual property rights, portrait rights, reputation rights, or other lawful rights and interests of others.
•  Publish or disseminate information containing illegal or non-compliant content such as pornography, violence, or sedition.
•  Interfere with or disrupt the normal operation or security of this Application.

2.2 File Ownership

You must have legal ownership or the right to use all PDF files, signature images, and seal images that you process using this Application. You shall bear all responsibility for any disputes arising from the content of the files you process.

3. Special Disclaimers Regarding Electronic Signature and Seal Functions

3.1 Effectiveness of Electronic Signatures

The "Electronic Signature" function provided by this Application is solely for the visual representation of adding a signature to a PDF document. This Application does not provide identity authentication services based on digital certificates, and does not guarantee that such signatures have the same legal effect as handwritten signatures in specific legal contexts (such as certain high-risk contracts, real estate transactions, etc.).

You are responsible for independently evaluating whether the electronic signatures generated by this Application meet the legal requirements of your jurisdiction and specific business scenarios.

3.2 Seal Extraction and Use (Special Warning)

The "Seal Extraction" function provided by this Application is an image processing tool intended to facilitate users in digitally archiving legally held physical seals or using them for informal document processing. You must strictly adhere to the following regulations:
•  Legal Authorization and Compliant Use:​ You must ensure that you are the lawful holder of the extracted seal or have obtained explicit written authorization from the rights holder. It is strictly prohibited to use this Application to extract, forge, or alter seals that you are not authorized to use (including but not limited to seals of state organs, enterprises, public institutions, social organizations, or other individuals).
•  Sole Legal Responsibility:​ Forging, altering, trading, stealing, seizing, or destroying official documents, certificates, or seals of state organs are illegal and criminal acts. If you use this Application to engage in any illegal or non-compliant activities (such as forging official seals, contract fraud, etc.), you shall bear all legal liabilities arising therefrom (including civil, administrative, and criminal liabilities), and the Application and its developer bear no responsibility.
•  No Review Obligation:​ As a tool software, this Application does not review the authenticity, legality, or ownership of the seal content you extract or use. You bear full responsibility for the results generated by using this function.
•  Anti-counterfeiting Notice:​ The seal images generated by this Application are merely pixel simulations, do not possess any anti-counterfeiting features, and cannot replace the legal effect of physical seals.

3.3 Seam Seal Function

The "Seam Seal" function simulates a sealing effect on the edges of PDF pages through image processing technology. This effect is purely a visual simulation and does not represent a technical guarantee against document tampering for integrity purposes.

4. Intellectual Property

4.1 Application Intellectual Property

All rights, ownership, and intellectual property related to this Application (including but not limited to code, interface design, trademarks, etc.) belong to the developer.

4.2 User Content

Data such as signatures, seals, and documents that you generate while using this Application belongs to you. This Application only processes this data locally and will not claim any rights to it.

5. Disclaimer

This Application is provided "as is" and we do not guarantee uninterrupted or error-free service.
•  The developer of this Application shall not be liable for any direct, indirect, incidental, special, or consequential damages (including but not limited to contract invalidity, loss of commercial benefits, etc.) caused by your use of this Application (especially the signature and seal functions).
•  You are responsible for backing up important data. This Application is not responsible for data loss caused by device failure, operational errors, etc.

6. Agreement Termination

If you violate any terms of this Agreement, we reserve the right to terminate the service provided to you at any time and require you to bear corresponding legal liabilities.