Frequently Asked Questions

Yes! All core PDF tools are 100% free with no registration or account required. We offer optional Premium plans for users who need higher file size limits, batch processing, and priority speeds.

No account is needed for free tools. Just upload your file and get started immediately. Creating an account (coming soon) will let you save your history and manage settings.

PDF AIOPEN works in all modern browsers: Chrome, Firefox, Safari, Edge, Opera. We recommend keeping your browser up to date for best performance.

Yes! PDF AIOPEN is fully responsive and optimized for smartphones and tablets. All tools work perfectly on iOS and Android browsers.

All file transfers are encrypted with 256-bit SSL. Files are stored in isolated, temporary storage and automatically and permanently deleted after 1 hour. We never read, share, or sell your files.

No. Files are automatically and permanently deleted from our servers after 1 hour. No backups are kept. Your data is yours alone.

Yes, processing happens on our secure cloud servers. We never share or access your content. All processing is done in isolated containers for maximum security.

Yes, we are fully GDPR compliant. We do not collect personal data without consent, provide data deletion on request, and process all EU data within GDPR guidelines.

Free users can upload files up to 50MB. Pro plan: 200MB. Business plan: 500MB per file.

PDF, Word (.doc, .docx), Excel (.xls, .xlsx), PowerPoint (.ppt, .pptx), JPG, PNG, GIF, WebP, HTML and more. Each tool page lists its accepted formats.

Free users: 10 files per hour. Pro and Business users have unlimited processing.

Free plan: no hard page limit for most tools. AI tools have a 50-page limit on free. Premium plans increase this to 200-1000 pages.

Our AI reads your entire PDF and uses large language models to understand the content. You can then chat with it, get summaries, ask questions, translate it, or get explanations in plain language.

AI tools support 12 major languages: English, Arabic, Urdu, Hindi, Spanish, Portuguese, French, German, Russian, Chinese, Indonesian, and Malay.

Our AI achieves high accuracy for factual questions about document content. For critical decisions (legal, medical, financial), always verify against the original document.

No. Your document is only processed by automated AI systems. No human at PDF AIOPEN reads your documents.

Yes, our converters achieve high fidelity formatting preservation. Complex layouts with tables, columns, and images are handled with care. Some very complex designs may have minor variations.

No! Free plan output files never have watermarks. That is our promise.

Default is 150 DPI (good for screen viewing). You can choose 72 DPI (web), 150 DPI (standard), or 300 DPI (print quality) in the tool options.