Terms of Use

PDF Viewer Pro — A Wix Application by XtendApp

Last Updated: March 16, 2026

1. Acceptance of Terms

These Terms of Use (“Terms”) constitute a legally binding agreement between you (“User,” “you,” or “your”) and XtendApp (“Company,” “we,” “us,” or “our”), the developer of PDF Viewer Pro (“Application,” “App,” or “Service”).

By installing, accessing, or using PDF Viewer Pro through the Wix App Market or any other means, you acknowledge that you have read, understood, and agree to be bound by these Terms. If you do not agree, you must immediately uninstall and cease using the Application.

These Terms apply to both site owners who install the Application (“Site Owners”) and end users who interact with PDF documents embedded via the Application (“End Users”).

2. Description of Service

PDF Viewer Pro is a Wix application that allows Site Owners to embed and display PDF documents on their Wix-powered websites. The Application provides configurable toolbar options, navigation controls, zoom functionality, full-screen viewing, search capabilities, watermark customization, and download/print controls.

The Service consists of:

• A front-end widget embedded within Wix sites via an iframe
• A settings panel accessible within the Wix Editor for configuration
• A dashboard for managing uploaded PDF documents
• Cloud-based backend services for authentication, file storage, and analytics

3. Eligibility

You must be at least 18 years of age (or the age of majority in your jurisdiction) to use this Service. By using the Application, you represent and warrant that you meet this requirement and have the legal capacity to enter into these Terms.

4. Account and Authentication

The Application authenticates Site Owners through Wix’s identity and instance verification system. Upon installation, a secure token exchange occurs between Wix and our backend services to verify your identity and site ownership. End Users who view embedded PDFs are authenticated anonymously and do not require an account.

You are responsible for:

• Maintaining the security of your Wix account credentials
• All activity that occurs under your account
• Promptly notifying us of any unauthorized use of your account

5. Subscription Plans and Billing

5.1 Free and Paid Plans

PDF Viewer Pro is available in both free and paid subscription tiers. Free-tier usage includes a visible watermark on embedded PDFs. Paid plans remove the watermark and may unlock additional features.

5.2 Billing and Payments

All payments are processed through Wix’s billing infrastructure. By purchasing a paid plan, you agree to Wix’s payment terms in addition to these Terms. Subscription plans may be billed on a monthly or yearly cycle as selected at the time of purchase.

5.3 Auto-Renewal

Paid subscriptions automatically renew at the end of each billing cycle unless cancelled before the renewal date. You may manage or cancel your subscription through the Wix dashboard.

5.4 Refunds

Refund requests are subject to Wix’s refund policies. We do not directly process payments or issue refunds. For billing disputes, please contact Wix support or reach out to us at support@xtendapp.io for assistance.

6. Acceptable Use

You agree not to use the Application to:

• Upload, store, or distribute any content that is illegal, infringing, defamatory, obscene, or harmful
• Distribute malware, viruses, or any other malicious code through PDF documents or otherwise
• Violate any applicable local, state, national, or international law or regulation
• Infringe upon the intellectual property rights of any third party
• Attempt to gain unauthorized access to our systems, servers, or databases
• Reverse-engineer, decompile, or disassemble the Application or its components
• Circumvent, disable, or interfere with security features, watermarks, or access restrictions
• Use the Service in any manner that could disable, overburden, or impair its functionality
• Harvest or collect information about other users without their consent
• Use automated means (bots, scrapers) to access the Service without our express written permission

7. Content and Intellectual Property

7.1 Your Content

You retain all ownership rights to PDF documents and other content you upload through the Application (“Your Content”). By uploading content, you grant us a limited, non-exclusive, worldwide license to store, process, and serve Your Content solely for the purpose of providing the Service.

You represent and warrant that you own or have the necessary licenses, rights, and permissions to upload and distribute Your Content, and that Your Content does not infringe upon any third party’s intellectual property or other rights.

7.2 Our Intellectual Property

The Application, including its design, code, features, functionality, user interface, and all related intellectual property, is owned by XtendApp and protected by copyright, trademark, and other intellectual property laws. Nothing in these Terms grants you any right to use our trademarks, logos, or branding without our prior written consent.

7.3 Third-Party Components

The Application incorporates open-source and third-party components, including but not limited to PDF.js (Mozilla Public License 2.0), React PDF Viewer, and various libraries governed by their respective licenses. Your use of the Application is also subject to the terms of these third-party components.

8. Data Collection and Privacy

Important: By using PDF Viewer Pro, you consent to the data collection practices described in this section. We collect data to operate, improve, and support the Service.

8.1 Data We Collect from Site Owners

When you install and configure the Application, we may collect:

• Email address and email verification status
• Wix site URL, display name, and business name
• Site language, locale, timezone, and payment currency
• Site categories (primary and secondary)
• Wix instance ID (used as your unique identifier)
• Subscription and billing information (plan type, billing cycle, purchase and expiration dates)
• Application configuration preferences (toolbar settings, zoom defaults, display options)

8.2 Data We Collect from End Users

When End Users view or interact with embedded PDFs, we may collect:

• IP address
• PDF view and download events (associated with a component ID and timestamp)
• Browser interaction data (toolbar usage: search, zoom, page navigation, full-screen, print, download)

8.3 Session Storage

We use browser session storage to track whether a view has already been counted for a given PDF component within the current session, preventing duplicate analytics entries. No persistent cookies are set by the Application for tracking purposes beyond what is set by the third-party services listed below.

8.4 Third-Party Services

We use the following third-party services to operate and improve the Application. Each service has its own privacy policy governing data processing:

We encourage you to review the privacy policies of these third-party services: Google/Firebase, Mixpanel, Sentry, LogRocket, SendGrid, Wix.

8.5 How We Use Your Data

We use the data we collect to:

• Provide, operate, and maintain the Service
• Authenticate your identity and manage your subscription
• Deliver analytics and usage statistics to Site Owners (view/download counts)
• Monitor performance, diagnose errors, and improve the Application
• Send transactional emails (e.g., account-related notifications)
• Send marketing communications (you may opt out at any time)
• Detect and prevent fraud, abuse, and security threats
• Comply with legal obligations

8.6 Data Retention and Deletion

When you uninstall the Application, we delete your PDF documents and component configuration data from our active databases. Aggregated, anonymized analytics data may be retained for business analysis purposes. Data stored in third-party services is subject to their respective retention policies.

To request a complete deletion of all your data, please contact us at support@xtendapp.io.

8.7 International Data Transfers

Our servers and third-party service providers are located in the United States. By using the Service, you consent to the transfer of your data to the United States and other jurisdictions where our service providers operate. We take reasonable steps to ensure that your data is treated securely and in accordance with these Terms.

9. Site Owner Obligations Regarding End Users

As a Site Owner using PDF Viewer Pro, you acknowledge that our Application collects certain data from End Users visiting your site (as described in Section 8.2). You are responsible for:

• Including appropriate disclosures about data collection in your own privacy policy
• Informing your End Users that embedded PDFs are powered by a third-party application that collects usage data
• Obtaining any required consents from End Users under applicable privacy laws (including GDPR, CCPA, and other data protection regulations)
• Ensuring that PDF documents you embed do not expose sensitive personal data of third parties without proper authorization

10. Service Availability and Modifications

10.1 Availability

We strive to maintain high availability of the Service but do not guarantee uninterrupted or error-free operation. The Service may be temporarily unavailable due to maintenance, updates, server issues, or factors beyond our control (including Wix platform outages, Firebase service disruptions, or internet connectivity issues).

10.2 Modifications

We reserve the right to modify, update, or discontinue any aspect of the Service at any time, with or without notice. This includes changes to features, pricing, subscription plans, and supported functionality. Continued use of the Application after changes constitutes acceptance of the modified Terms.

10.3 Version Updates

The Application may periodically check for version updates and notify you of available upgrades. We recommend keeping the Application up to date to ensure optimal performance and security.

11. Disclaimer of Warranties

THE SERVICE IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT.

Without limiting the foregoing, we do not warrant that:

• The Service will meet your specific requirements or expectations
• The Service will be uninterrupted, timely, secure, or error-free
• PDF documents will render identically across all browsers, devices, or platforms
• Any data or content stored through the Service will not be lost, corrupted, or accessed by unauthorized parties
• The Service will be compatible with all Wix themes, templates, or third-party applications
• Analytics data (view counts, download counts) will be 100% accurate

12. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL XTENDAPP, ITS OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, OR AFFILIATES BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO:

• Loss of profits, revenue, data, or business opportunities
• Loss of goodwill or reputation
• Cost of procurement of substitute services
• Unauthorized access to or alteration of your content or data
• Any matter relating to the Service

IN NO EVENT SHALL OUR TOTAL AGGREGATE LIABILITY EXCEED THE AMOUNT YOU HAVE PAID US IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR ONE HUNDRED U.S. DOLLARS (US$100), WHICHEVER IS GREATER.

SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF CERTAIN DAMAGES. IN SUCH JURISDICTIONS, OUR LIABILITY SHALL BE LIMITED TO THE MAXIMUM EXTENT PERMITTED BY LAW.

13. Indemnification

You agree to indemnify, defend, and hold harmless XtendApp and its officers, directors, employees, agents, and affiliates from and against any and all claims, damages, losses, liabilities, costs, and expenses (including reasonable attorneys’ fees) arising out of or related to:

• Your use of the Service
• Your Content or any PDF documents you upload or distribute
• Your violation of these Terms
• Your violation of any applicable law or regulation
• Your violation of any third party’s rights, including intellectual property rights
• Any claim by an End User or third party related to content displayed through the Application on your site

14. Third-Party Platforms and Services

PDF Viewer Pro operates within the Wix ecosystem and relies on third-party infrastructure providers. Your use of the Application is also subject to:

• Wix Terms of Use — governing your use of the Wix platform
• Google Cloud / Firebase Terms of Service — governing backend infrastructure
• Applicable terms of any other third-party services listed in Section 8.4

We are not responsible for the availability, accuracy, or practices of any third-party platform. Changes to third-party services may affect the functionality of the Application, and we shall not be liable for any such impact.

15. Termination

15.1 By You

You may terminate your use of the Service at any time by uninstalling the Application from your Wix site. Uninstallation will trigger deletion of your component data and PDF documents from our active systems.

15.2 By Us

We reserve the right to suspend or terminate your access to the Service at any time, with or without cause, and with or without notice, including but not limited to cases where:

• You breach any provision of these Terms
• You engage in fraudulent, abusive, or illegal activity
• Your use of the Service poses a security risk or adversely affects other users
• We are required to do so by law

15.3 Effect of Termination

Upon termination, your right to use the Service ceases immediately. Sections relating to intellectual property, disclaimer of warranties, limitation of liability, indemnification, and governing law shall survive termination.

16. Copyright and DMCA Compliance

We respect the intellectual property rights of others. If you believe that content distributed through the Application infringes your copyright, please send a notice to support@xtendapp.io containing:

• A description of the copyrighted work you claim has been infringed
• A description of where the allegedly infringing material is located
• Your contact information (name, address, email, phone number)
• A statement that you have a good-faith belief that the use is not authorized
• A statement, under penalty of perjury, that the information in your notice is accurate and that you are the copyright owner or authorized to act on the owner’s behalf
• Your physical or electronic signature

17. Marketing Communications

By installing the Application, you may be added to our marketing contact list and receive occasional emails about product updates, tips, and promotions. You may unsubscribe from marketing emails at any time by clicking the unsubscribe link in any email or by contacting us at support@xtendapp.io. Transactional emails related to your account and subscription are not considered marketing communications and may still be sent.

18. Governing Law and Dispute Resolution

18.1 Governing Law

These Terms shall be governed by and construed in accordance with the laws of the State of Delaware, United States, without regard to its conflict of law provisions.

18.2 Dispute Resolution

Any dispute arising out of or relating to these Terms or the Service shall first be attempted to be resolved through good-faith negotiation. If the dispute cannot be resolved within thirty (30) days, either party may submit the dispute to binding arbitration in accordance with the rules of the American Arbitration Association. The arbitration shall take place in the State of Delaware, and the language of the arbitration shall be English.

18.3 Class Action Waiver

TO THE EXTENT PERMITTED BY LAW, YOU AGREE THAT ANY DISPUTE RESOLUTION PROCEEDINGS WILL BE CONDUCTED ON AN INDIVIDUAL BASIS AND NOT IN A CLASS, CONSOLIDATED, OR REPRESENTATIVE ACTION. YOU WAIVE ANY RIGHT TO PARTICIPATE IN A CLASS ACTION LAWSUIT OR CLASS-WIDE ARBITRATION.

19. General Provisions

19.1 Entire Agreement

These Terms, together with any applicable Wix terms and third-party service terms referenced herein, constitute the entire agreement between you and XtendApp regarding the Service and supersede all prior agreements and understandings.

19.2 Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall remain in full force and effect.

19.3 Waiver

Our failure to enforce any provision of these Terms shall not constitute a waiver of that provision or any other provision. A waiver of any provision shall only be effective if made in writing and signed by us.

19.4 Assignment

You may not assign or transfer these Terms or your rights hereunder without our prior written consent. We may assign these Terms without restriction.

19.5 Force Majeure

We shall not be liable for any failure or delay in performance resulting from causes beyond our reasonable control, including but not limited to acts of God, natural disasters, war, terrorism, pandemics, government actions, power failures, internet or telecommunications failures, or third-party service outages.

19.6 Changes to These Terms

We reserve the right to update or modify these Terms at any time. When we make material changes, we will update the “Last Updated” date at the top of this page. Your continued use of the Service after any changes constitutes your acceptance of the revised Terms. We encourage you to review these Terms periodically.

20. Contact Us

If you have any questions, concerns, or requests regarding these Terms, please contact us:

• Email: support@xtendapp.io
• Application: PDF Viewer Pro
• Developer: XtendApp