Privacy Policy

1. Overview and Core Privacy Principle

At FileCompressor.online, available at https://filecompressor.online, protecting your privacy is not just a policy—it is the foundational engineering principle of our software architecture. Unlike conventional online file compressors that require you to upload private photos, contracts, IDs, or sensitive documents to cloud servers, FileCompressor.online executes entirely client-side using JavaScript, WebAssembly, and native HTML5 Canvas APIs.

Because your files never leave your computer, smartphone, or tablet, our servers have zero knowledge of your files, filenames, EXIF locations, or media contents.

2. What Information We Collect

A. Your Uploaded Files and Media

We collect zero file data. When you drag, drop, or select a file to compress:

• The file is loaded directly into your browser's private sandbox memory via the standard HTML5 File API.
• Temporary blob URLs (e.g. blob:http...) are created locally on your device for live preview and comparison.
• These temporary memory pointers are automatically revoked and erased when you remove the file, upload another file, or close the browser tab.
• Zero bytes of file payload or visual data are ever transmitted across the internet to our servers or any third-party infrastructure.

B. Analytics and Server Log Data

Like almost all websites, our web hosting provider may log basic, non-personally identifiable diagnostic HTTP connection metadata when you load the static HTML/CSS/JS assets. This may include:

• Browser type and version (User-Agent string)
• Referring URL and requested static asset path
• General country/region level geolocation (derived from IP address for DDoS mitigation and CDN routing)
• Date and timestamp of the web page request

This technical log data is strictly used for server performance, network security, and infrastructure reliability. It is never associated with any file you compress.

3. Local Storage and Cookies

FileCompressor.online does not use persistent tracking cookies, ad-retargeting beacons, or invasive fingerprinting scripts. We may use your browser's local storage (LocalStorage) solely to store functional, non-personal user preferences—such as your chosen default target KB size or dark mode preference—so that your settings are preserved across visits.

You can clear your browser cookies and LocalStorage at any time through your browser's security settings without affecting the core compression functionality of this tool.

4. Data Security

Because FileCompressor.online does not transmit or store your files on external servers, the risk of server-side data leaks, remote database breaches, or unauthorized third-party file access is eliminated by design. Your files remain protected by your own device's operating system security and your web browser's sandbox isolation.

All web traffic to https://filecompressor.online is served over encrypted Transport Layer Security (HTTPS/TLS) to guarantee the authenticity and integrity of the client-side code delivered to your browser.

5. Third-Party Services and External Links

Our website utilizes reputable static content delivery networks (CDNs) for modern typography (Google Fonts). These external CDNs may log standard connection headers necessary to deliver font files to your browser in accordance with their respective privacy policies.

6. Children's Privacy

FileCompressor.online does not knowingly collect, request, or retain personal data from children under the age of 13 (or under 16 in the European Union). Since our software performs in-browser processing without account registration or file ingestion, children's personal media files are neither collected nor stored.

7. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect operational, legal, or regulatory updates. Any changes will be posted on this page with an updated "Effective Date". Your continued use of the website following any modifications signifies your acceptance of the updated terms.

8. Contact Us

If you have any questions, inquiries, or privacy concerns regarding this Privacy Policy or our client-side processing architecture, please contact our privacy and data protection team: