Last Updated: February 3, 2026
At PDF-Ninja, we take your privacy seriously. This Privacy Policy explains how we collect, use, and protect your information when you use our PDF tools and services.
When you create an account, we collect:
When you use our PDF tools, you may upload PDF files for processing. These files are:
For e-signature documents, files may be stored temporarily until all parties have signed, after which they are deleted according to our retention policy.
Saved Files: If you are logged in and choose to save files to your account, they will be stored until you delete them or delete your account.
When you use our file sharing/transfer service, we collect:
Important: When you send files to recipients, we store:
Shared files are automatically deleted after the expiration date you select (7, 14, or 30 days depending on your plan).
When you subscribe to a paid plan, payment processing is handled by Stripe. We do not store your credit card details. Stripe may collect:
For more information, see Stripe's Privacy Policy.
We track usage to enforce plan limits and improve our services:
We automatically collect certain information when you visit our website:
We use the collected information for the following purposes:
We implement appropriate technical and organizational measures to protect your data:
We use Stripe to process payments securely. Stripe handles all payment information and is PCI-DSS compliant. See Stripe's Privacy Policy.
We use Supabase to store account information and usage data securely. See Supabase's Privacy Policy.
For AI-powered features such as PDF Chat, PDF Study, PDF Translation, and AI document generation, we use Anthropic's Claude AI to process your document content. When you use these features, the text content of your documents is sent to Anthropic's API for processing. See Anthropic's Privacy Policy.
We use email services to send transactional emails about your account, subscriptions, e-signature requests, and file transfer notifications. When you share files using our File Transfer service, we send emails to the recipients you specify containing download links and any message you include.
You have the following rights regarding your personal data:
To exercise any of these rights, please contact us at [email protected].
We retain different types of data for different periods:
Our services are not directed to children under 16 years of age. We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately.
Your information may be transferred to and processed in countries other than your country of residence. We ensure appropriate safeguards are in place to protect your data in accordance with this Privacy Policy and applicable data protection laws.
We may update this Privacy Policy from time to time. We will notify you of any material changes by posting the new Privacy Policy on this page and updating the "Last Updated" date. For significant changes, we may also send you an email notification.
If you have any questions about this Privacy Policy or our data practices, please contact us: