Frequently Asked Questions
8 answers to common questions
Is PDF0.ai really free?+
Yes, all tools are 100% free. No hidden fees, no premium tiers, no watermarks on output files.
Are my files safe?+
Absolutely. Files are processed using encrypted connections (256-bit SSL). Most tools run entirely in your browser, meaning your files never leave your device. Any server-side processing uses temporary storage with automatic deletion within 60 minutes.
Do I need to create an account?+
No. All tools work instantly without signup, login, or email verification.
What's the maximum file size?+
Most tools support files up to 100MB. For larger files, we recommend splitting them first using our PDF Split tool.
Can I use PDF0.ai on mobile?+
Yes. All tools are fully responsive and work on smartphones and tablets. No app download needed.
How does the AI PDF chat work?+
Our AI reads your PDF content and lets you ask questions about it. It uses natural language processing to find relevant sections and provide accurate answers.
Do you store my PDFs?+
No. Files processed client-side never leave your browser. Files processed server-side are automatically deleted within 60 minutes.
Can I process multiple PDFs at once?+
Yes. Tools like Merge PDF, Compress PDF, and Convert PDF support batch processing of multiple files.
Still have questions?
Check our blog for detailed guides and tutorials.