Frequently Asked Questions

Yes, Online File Opener is completely free to use. We offer all our file viewing capabilities without any subscription fees or hidden charges. You can upload and view your files without creating an account.

We support a wide range of file formats, including:

• Documents: PDF, TXT, etc.
• Images: JPG, PNG, GIF, BMP, WEBP, etc.
• Archives: ZIP, RAR, TAR, 7Z, etc.
• Code Files: Python, JavaScript, HTML, PHP, Java, C/C++, C#, Go, Ruby, React, Swift, etc.
• Databases: SQLite, DB, DB3, etc.
• Videos: MP4, WebM, etc.

For a complete list of supported formats, please visit our Supported Formats page.

Yes, there are file size limits to ensure optimal performance:

• General files: 100MB
• Archive files: 100MB
• Video files: 200MB
• Database files: 50MB

These limits help us maintain fast loading times and ensure a smooth experience for all users.

We take data security very seriously. Here's how we protect your files:

• Files are processed securely in your browser when possible
• We don't permanently store your files - they're automatically deleted after a short period
• We use secure HTTPS connections to protect data in transit
• We don't require account creation, so there's no personal information stored

For more details, please review our Privacy Policy.

No, you don't need to create an account to use Online File Opener. Our service is designed to be simple and accessible - just upload your file and start viewing it immediately.

Files uploaded to Online File Opener are automatically deleted after 24 hours. This temporary storage allows you to access your files during your session but ensures we don't keep your data longer than necessary.

Online File Opener is primarily a file viewer, not an editor. While some basic interaction may be possible depending on the file type, our service is designed for viewing and accessing file contents rather than editing them.

Yes, Online File Opener is fully responsive and works on smartphones and tablets. Our interface adapts to different screen sizes, allowing you to view your files on any device with a web browser.

Online File Opener works with all modern browsers, including:

• Google Chrome
• Mozilla Firefox
• Microsoft Edge
• Apple Safari
• Opera

For the best experience, we recommend using the latest version of your preferred browser.