Privacy Policy

Last Updated: December 2025

Introduction

At 3DCompressor, we take your privacy seriously. This Privacy Policy explains how we handle information when you use our free PDF compression tool. Unlike many online services, we are committed to a privacy-first approach where your documents remain completely under your control.

Information We DO NOT Collect

We want to be crystal clear about what we don't do:

  • We DO NOT collect, store, or process your PDF files: All compression happens entirely in your web browser using client-side JavaScript. Your files never leave your device.
  • We DO NOT upload your documents to our servers: There is no file transfer to any external server during the compression process.
  • We DO NOT track the content of your files: We have no way of knowing what documents you compress or what they contain.
  • We DO NOT require personal information: You can use our service without creating an account or providing your name, email, or any other personal details.
  • We DO NOT sell or share your data: Since we don't collect your data in the first place, there's nothing to sell or share.

How Our Client-Side Processing Works

Our PDF compression tool operates entirely within your web browser using advanced JavaScript and WebAssembly technologies. Here's what happens when you use 3DCompressor:

  1. You select a PDF file from your device
  2. The file is loaded into your browser's memory (not uploaded anywhere)
  3. Our compression algorithm processes the file locally on your device
  4. The compressed PDF is generated in your browser
  5. You download the compressed file directly from your browser
  6. When you close the browser tab, all data is automatically cleared from memory

Throughout this entire process, your PDF file remains on your device. No data is transmitted to our servers or any third-party service.

Information We May Collect

While we don't collect information about your files, we may collect limited, non-personal information to improve our service:

  • Anonymous Usage Statistics: We may use web analytics services (like Google Analytics) to understand how visitors use our website, including page views, time on site, and general traffic sources. This data is aggregated and anonymous.
  • Technical Information: Standard web server logs may record your IP address, browser type, device type, and referring website. This information is used only for technical maintenance and security purposes.
  • Cookies: We use cookies for essential website functionality and analytics. See our Cookies section below for more details.

Cookies and Tracking Technologies

3DCompressor uses cookies and similar technologies for the following purposes:

  • Essential Cookies: These cookies are necessary for the website to function properly, including remembering your compression level preferences during your session.
  • Analytics Cookies: We use third-party analytics tools to understand website traffic and usage patterns. These cookies collect anonymous data only.
  • Advertising Cookies: To support our free service, we display advertisements through Google AdSense or similar platforms. These services may use cookies to show relevant ads. You can control these through your browser settings or opt-out tools provided by the advertising networks.

You can control or disable cookies through your browser settings. However, disabling essential cookies may affect the functionality of our website.

Third-Party Services

While your PDF files are never shared with third parties, our website may integrate with the following third-party services:

  • Google Analytics: For anonymous traffic analysis and website improvement.
  • Google AdSense: For displaying advertisements to support our free service.
  • Content Delivery Networks (CDNs): We may use CDNs to serve website resources (CSS, JavaScript libraries) faster. These services do not have access to your PDF files.

These third-party services have their own privacy policies, which we encourage you to review. We only work with reputable providers that maintain high privacy and security standards.

Data Security

Since your PDF files are processed entirely in your browser and never transmitted to our servers, the primary security responsibility lies with your device and browser. We recommend:

  • Using updated web browsers with current security patches
  • Ensuring your device has up-to-date antivirus and security software
  • Using secure internet connections, especially when working with sensitive documents
  • Closing the browser tab after completing compression to clear temporary data

Our website uses HTTPS encryption to ensure secure communication between your browser and our web server for all page loads and resource requests.

Your Rights and Choices

You have full control over your data when using 3DCompressor:

  • File Control: Your PDF files remain entirely under your control at all times. You can stop the compression process at any moment and close the browser.
  • Cookie Control: You can manage or delete cookies through your browser settings.
  • Analytics Opt-Out: You can opt out of Google Analytics tracking using browser extensions or Google's opt-out tool.
  • No Account Deletion Needed: Since we don't require accounts, there's no need to request account deletion.

Children's Privacy

3DCompressor is a general-audience tool that can be used by anyone, including children. However, since we don't collect personal information or require account creation, we don't knowingly collect information from children under 13 years of age. Parents and guardians should supervise children's internet usage.

International Users

3DCompressor can be accessed globally. Since all processing happens in your browser, your PDF files never cross international borders through our service. Any limited analytics data we collect may be stored on servers in various locations, but this data is anonymous and does not include your file content.

GDPR Compliance (European Users)

For users in the European Union, our client-side processing approach means we don't act as a "data controller" for your PDF files, as we never receive or process them. The limited analytics data we collect is handled in compliance with GDPR requirements, and you have the right to:

  • Access any personal data we may have collected
  • Request deletion of your data
  • Opt out of analytics tracking
  • Object to data processing

Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices or legal requirements. When we make significant changes, we will update the "Last Updated" date at the top of this page and may provide additional notice through our website. We encourage you to review this Privacy Policy periodically.

Contact Us About Privacy

If you have any questions or concerns about this Privacy Policy or how we handle privacy on 3DCompressor, please contact us:

Summary

To summarize our privacy commitment:

  • ✓ Your PDF files are processed entirely in your browser
  • ✓ We never upload, store, or see your documents
  • ✓ No account or personal information required
  • ✓ We only collect anonymous, aggregated usage statistics
  • ✓ You have complete control over your data
  • ✓ Third-party services (analytics, ads) are clearly disclosed
  • ✓ We comply with international privacy regulations

At 3DCompressor, your privacy isn't just a policy – it's built into the very architecture of our tool. Enjoy secure, private PDF compression with complete peace of mind.