Privacy Policy
Last updated: November 3, 2026
1. General Provisions
This Privacy Policy describes how the web service pdfto.dev
(available at https://pdfto.dev) processes information when you use
our tools for working with PDF, Word (.docx), and images. We designed the service
following the Privacy by Design principle: no registration, no advertising trackers, and no
storage of user documents.
2. Processing of Uploaded Files and Documents
- In-Memory Processing: Files you upload (PDFs, Word documents, images) are transmitted over encrypted HTTPS (TLS) and processed automatically in server memory (or in isolated temporary buffers during conversion that are deleted immediately once the request finishes).
- No Permanent Storage: We do not store copies of your source or processed documents on disk after returning the result to your browser, do not index their content, and never share them with third parties.
- PDF Passwords: Passwords you enter to unlock or protect a PDF (AES-256 encryption) are used strictly in memory at the moment of the cryptographic operation and are explicitly excluded from all system logs.
- Metadata Control: The service gives you full control over document metadata (title, author, subject, keywords, creator app, PDF producer, creation and modification dates) — you can view, selectively edit, or completely strip them before saving your file.
3. Technical Data Collected
To ensure security, protect against automated bots (rate limiting), and monitor service stability, minimal technical request metadata may be recorded automatically:
- IP address and browser
User-Agentheader (for DDoS and abuse protection); - A random non-personalized tab identifier (
sessionStorage) that resets when the browser closes; - Technical operation metrics: selected tool, file size in bytes, page count, execution time, and status code (success or error).
We use our own lightweight, privacy-friendly web analytics without advertising profiles and never sell data to data brokers.
4. Cookies and Local Storage
For regular users, pdfto.dev does not set any tracking or advertising cookies.
Only temporary sessionStorage and language preference (localStorage / pdfto_lang)
are used in the browser. A secure technical cookie (HttpOnly, SameSite=Strict) is used
exclusively for administrator authentication in the restricted service management area.
5. Data Transmission Security
All connections to pdfto.dev are encrypted using modern HTTPS (TLS), including HTTP Strict
Transport Security (HSTS), cross-site scripting protection (Content-Security-Policy),
and framing protection (X-Frame-Options: DENY).
6. Updates and Contact
We may update this Privacy Policy as the service evolves. The current version is always available at pdfto.dev/privacy.
For any privacy or service inquiries, you can contact the project author: Evgenii Bartenev (boreesych.com).