Official Legal Document

Privacy Policy for PDF to Image

Application: PDF to Image: Fast & Offline (com.tkmsoft.pdftoimage)
Developer: TKM Soft (Burkan Emre Tokman)
Contact: burkanemretokman@gmail.com
Effective Date: November 6, 2026
Target SDK: Android 15 (API 36) | Zero Cloud Upload Architecture

Absolute Document Confidentiality Promise: PDF to Image operates on a strict 100% On-Device Processing Model. Your PDF documents, bank statements, legal contracts, private invoices, and medical records are never uploaded to any remote server or cloud infrastructure. All parsing and rendering occur solely in your device's local memory.

1. Local Processing & Zero File Transmission

Unlike web-based or cloud-mediated converters that require uploading your private files to third-party servers, PDF to Image executes all rasterization directly on your device:

On-Device Rendering Engine: Uses Apache PdfBox-Android and Android's native PdfRenderer. The binary content of your documents never leaves your phone or tablet.
Temporary Processing Cache: Any interim image bitmaps created during multi-page rendering are stored temporarily in the application's isolated private cache directory and deleted automatically upon completion or cancellation.
Zero Account Creation: No sign-up, email registration, or social profile linkage is required to convert documents.

2. Android Device Permissions & Technical Justifications

PDF to Image requests only essential system capabilities mandated by Google Play compliance and modern Android scoped storage:

Permission	Type	Scope & Technical Purpose
`android.permission.INTERNET` & `ACCESS_NETWORK_STATE`	Normal	Required for Google Play Billing license checks, AdMob rewarded video loading, UMP consent synchronization, and Firebase crash reporting. It is never used to transmit document contents.
`android.permission.POST_NOTIFICATIONS`	Runtime (API 33+)	Used exclusively to display background conversion progress (Page X/Y) and notify you when image extraction or ZIP creation is complete.
`android.permission.FOREGROUND_SERVICE` & `FOREGROUND_SERVICE_DATA_SYNC`	Normal	Allows the `ConversionService` to continue processing large, multi-hundred-page documents without being killed by Android's memory manager when you switch apps.
`android.permission.WAKE_LOCK`	Normal	Prevents the device processor from sleeping during intensive multi-page document conversions.
`READ / WRITE_EXTERNAL_STORAGE`	Legacy (API ≤ 32)	Required strictly on older Android versions (API 24–32) to read selected PDFs and save output images into your Gallery. On Android 10+ (API 29+), modern Scoped Storage (MediaStore API) is used without broad storage access.

3. Third-Party Services & Telemetry

PDF to Image integrates industry-standard Google SDKs for monetization, license verification, and technical health:

Google Play In-App Billing: Processes optional weekly, yearly, and lifetime PRO licenses securely. TKM Soft never accesses or stores credit card numbers or banking data.
Google User Messaging Platform (UMP): Manages European Economic Area (EEA), UK, and Swiss GDPR consent choices for personalized or non-personalized advertisements. Users can modify their privacy choices at any time from the app's menu.
Google AdMob: Serves rewarded video ads (to grant bonus conversions) and occasional interstitial ads (with a strict 90-second minimum cooldown). AdMob processes standard advertising identifiers (AD_ID) in compliance with the Google Privacy Policy.
Firebase Analytics & Crashlytics: Collects anonymized system vitals, device model, Android OS version, and stack traces to resolve crashes. Diagnostic logs contain zero file names, document titles, or extracted image content.
Firebase Remote Config: Dynamically adjusts performance safety thresholds and render dimension limits to prevent Out-Of-Memory (OOM) errors on lower-spec hardware.

4. Output File Storage & User Data Sovereignty

All converted images are saved directly to your device storage:

Gallery Storage: Converted PNG, JPG, or WebP files are written to the standard public Pictures/PDFtoImage directory via Android MediaStore.
ZIP Archives: Multi-page archives are saved to your Downloads/ directory.
Full Deletion Control: You have complete ownership. Deleting images from your gallery or deleting the app permanently removes them. TKM Soft retains no copies.

5. Children's Privacy

PDF to Image is a general document utility suitable for students, professionals, and everyday users. It does not knowingly solicit or collect personal information from children under 13 (or under 16 in the EEA).

6. International Privacy Rights (GDPR & CCPA)

Under global data privacy laws including GDPR and CCPA:

Right to Confidentiality: Because documents never leave your hardware, your confidentiality is guaranteed by design.
Advertising Consent Management: You can reset or update your consent preferences anytime via Options Menu → Privacy Choices or via Android system ad settings.

7. Security Architecture

PDF to Image employs strict security measures to protect your system:

Anti-Tamper & License Security: PRO license states are cryptographically validated locally using HMAC-SHA256 signatures to prevent unauthorized privilege escalation.
R8 Minification: Production binaries are obfuscated and shrunk with R8 to prevent reverse engineering and injection attacks.
Safe Memory Bounds: The engine enforces strict bitmap dimension bounds (MAX_RENDER_DIMENSION = 4096px) to shield your device from memory exhaustion attacks embedded in malformed PDFs.

8. Policy Updates & Contact

We may update this Privacy Policy as needed to conform to Android platform updates or regulatory mandates. The latest version is always available at tkmsoft.com/pdftoimage-privacy.html.

For questions or support regarding this Privacy Policy, please contact:

TKM Soft — Burkan Emre Tokman
Email: burkanemretokman@gmail.com
Studio Website: tkmsoft.com