Last updated: September 4, 2026
PDFTrans ("we", "us", or "our") provides an online service that helps users translate academic and scientific PDF documents while preserving layout, formulas, figures, and tables. This Privacy Policy explains what information we collect, how we use it, and the choices you have when you use our website and services (collectively, the "Service").
By accessing or using PDFTrans, you agree to the collection and use of information in accordance with this Privacy Policy.
1. Information We Collect
1.1 Account Information
When you sign in with Google or create an account, we may collect:
- Your name and email address
- A profile image, if provided by your identity provider
- A unique account identifier used to associate your translation tasks and credits
We do not receive your Google password.
1.2 Uploaded Content and Translation Data
When you use the Service, we process the information you provide for translation, including:
- PDF files you upload or PDF URLs you submit
- Selected source and target languages, translation engine, page range, and output options
- Generated translated or bilingual PDF files associated with your tasks
- Task metadata such as status, timestamps, and error messages
Your uploaded papers and translated results are used only to provide the translation service. We do not use your documents to build a public content library or to train general-purpose machine learning models.
1.3 Payment Information
If you purchase credits, payments are processed by Stripe. We receive information needed to fulfill your purchase, such as payment status, transaction identifiers, and the credit amount purchased. We do not store full payment card numbers on our servers.
1.4 Usage and Technical Information
We may automatically collect technical information when you use the Service, including:
- Browser type, device information, and operating system
- IP address and approximate location derived from it
- Pages visited, features used, and referral source
- Log data related to service performance, security, and error diagnosis
2. How We Use Information
We use the information we collect to:
- Provide, operate, and maintain the translation Service
- Authenticate users and manage accounts and credits
- Process translation requests and deliver translated files
- Process payments and provide purchase receipts or support
- Monitor usage, prevent abuse, and protect the security of the Service
- Improve reliability, performance, and user experience
- Respond to support requests and communicate service-related notices
We may also use aggregated or de-identified data for analytics and product improvement.
3. How We Share Information
We do not sell your personal information. We may share information only in the following circumstances:
- Service providers: With vendors that help us operate the Service, such as cloud hosting, authentication, payment processing, and translation infrastructure providers. These providers are authorized to use information only as needed to perform services for us.
- Legal requirements: When required by law, regulation, legal process, or governmental request, or when we believe disclosure is necessary to protect rights, safety, security, or the integrity of the Service.
- Business transfers: In connection with a merger, acquisition, financing, reorganization, or sale of assets, subject to appropriate confidentiality protections.
Some translation engines or language models may process document content on third-party infrastructure as part of delivering the Service. Where applicable, we select providers that support secure processing for user-submitted content.
4. Data Retention
We retain information only for as long as reasonably necessary to provide the Service, comply with legal obligations, resolve disputes, and enforce our agreements.
Uploaded PDFs, generated outputs, and related task data may be deleted after processing is complete or after a limited retention period, unless longer retention is required for troubleshooting, billing, or legal compliance. You may contact us to request deletion of account-related data, subject to applicable legal and operational requirements.
5. Security
We implement reasonable administrative, technical, and organizational measures designed to protect information against unauthorized access, loss, misuse, or alteration. However, no method of transmission over the internet or electronic storage is completely secure, and we cannot guarantee absolute security.
You are responsible for maintaining the confidentiality of your account credentials and for the content you choose to upload.
6. Your Choices and Rights
Depending on your location, you may have rights to:
- Access, correct, or delete certain personal information
- Object to or restrict certain processing
- Withdraw consent where processing is based on consent
- Request a copy of your information in a portable format
To exercise these rights, contact us using the details below. We may need to verify your identity before responding.
You can also:
- Stop using the Service at any time
- Manage certain Google account permissions through your Google account settings
- Avoid uploading sensitive personal data unless necessary for your translation task
7. International Data Transfers
Your information may be processed in countries other than the one where you live. Where required, we take steps designed to ensure appropriate safeguards for cross-border transfers.
8. Children's Privacy
The Service is not directed to children under 13, and we do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us so we can take appropriate action.
9. Third-Party Links
The Service may contain links to third-party websites or tools, such as academic repositories or open-source projects. We are not responsible for the privacy practices of those third parties. We encourage you to review their privacy policies before providing information to them.
10. Changes to This Policy
We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date at the top of this page. Material changes may also be communicated through the Service or by other reasonable means. Your continued use of the Service after an update becomes effective constitutes acceptance of the revised policy.
11. Contact Us
If you have questions about this Privacy Policy or our data practices, contact us at:
Email: support@pdftrans.app
If you contact us about a specific translation task or billing issue, please include the email address associated with your account and any relevant task or payment reference.