Use the Multi-tab Viewer feature by clicking 'File' > 'Open' and select multiple PDFs, or drag them into the app window. You can view them in separate tabs for easy management.

Yes, go to 'Edit' > 'Edit PDF,' then select text or images to modify. You need the Pro version to access full editing tools.

Click 'Convert', select 'PDF to Word,' choose your file, and click 'Start.' Pro version is required for conversion features.

Open your PDF, select the 'Annotate' tab, then choose tools like highlight, sticky note, or underline toannotate your document.

Go to 'Merge' in the toolbar, add your files, arrange them as needed, then click 'Merge' to create a single PDF. This feature requires Pro.

The quarterly plan costs $14.99, and the permanent plan is $39.99. To subscribe, go to Settings > Account > Subscription and choose your plan.

Yes, we offer a 7-day free trial of all Pro features. Click 'Start Free Trial' during app startup or in the 'Upgrade' menu.

Go to 'Protect' > 'Password,' set your desired password, then save the file. This feature is available in Pro version.

Try restarting the app, ensure you have the latest version installed, and check your system compatibility. Contact support if issues persist.

Open the PDF, go to 'Sign' > 'Add Signature,' then upload an image, draw with your trackpad, or type your name. Pro required for advanced options.