LAST UPDATED · NOVEMBER 10, 2026 · KUANG HAIBIN (旷海滨)
Privacy Policy
Who is responsible
The data controller for this Service is Kuang Haibin (旷海滨), Changsha, Hunan, China. Privacy questions and rights requests go to contact@phototolinedrawing.com.
What we collect
When you sign in with Google we receive a stable account identifier and your email address, plus confirmation that the address is verified. We create session records, a credit ledger, task records (mode, state, timestamps, credit movement) and payment references such as an order or transaction id. We do not receive or store your card number. We record short-lived technical signals, including IP address and challenge results, to prevent abuse of the free allowance.
Your photographs and results
Uploaded photographs are stored as private objects, never as public files, and are deleted twenty-four hours after upload. Generated results are deleted seven days after creation. Deletion is performed by a scheduled job that also removes the stored object; a file already downloaded to your own device is outside our control. We do not inspect your photographs manually unless you ask for support on a specific task or the law requires it.
Service providers
Cloudflare provides hosting, database, queue, object storage and bot protection (Turnstile). A third-party AI image-generation provider receives the normalised image and the parameters needed to produce a result; it does not receive your account details, and its identity is available on request. Google provides sign-in. PayPal, and Waffo where offered, processes payments. Optional analytics, when you allow it, is provided through Google Tag Manager and Google Analytics. Each provider processes data under its own terms and may store data outside your country.
Why we process it
To deliver the output you asked for, to operate credits and payments, to keep the Service secure and available, to comply with tax and accounting obligations, and, only with your consent, to measure aggregate usage.
Analytics and your choice
Optional analytics is not loaded until you accept it, and declining does not restrict any feature. We never send photographs, filenames, email addresses, provider output URLs or task links as analytics fields. We do not run advertising or cross-site tracking pixels.
Cookies and local storage
We use a session cookie to keep you signed in, a security cookie for cross-site request checks during sign-in, and a local storage entry that remembers your analytics choice. No advertising cookies are set.
Retention
Sessions expire and are purged. Task metadata and credit movements are kept while your account exists and afterwards only as long as needed for accounting, dispute and fraud-prevention purposes. Operational access logs are kept for a short window.
Your rights
Depending on where you live you may request access, correction, deletion, restriction or portability, object to processing, and withdraw analytics consent at any time. Write to contact@phototolinedrawing.com from the address linked to your account; we may need to verify the request. You also have the right to complain to your local data protection authority.
Children
The Service is not directed at children under 13, and we do not knowingly collect their data. Where local law sets a higher age for valid consent, a guardian must approve use.
Changes
We will publish any update on this page with a new effective date, and announce material changes before they apply. Last updated November 10, 2026.
Contact
Photo to Line Drawing is operated by Kuang Haibin (旷海滨), Changsha, Hunan, China. Support: support@phototolinedrawing.com · Privacy: contact@phototolinedrawing.com