Privacy Policy

Last Updated: June 13, 2026

Key Takeaway: Base64Helper operates entirely offline on your device. We do not collect, store, or transmit any personal data whatsoever.

1. Introduction

Thank you for using Base64Helper ("the App", "we", "our", or "us"). This Privacy Policy explains our practices regarding data collection, usage, and disclosure when you use our application. We are committed to protecting your privacy and ensuring you understand exactly how the App handles your information.

By using Base64Helper, you agree to the terms described in this Privacy Policy. If you do not agree with any part of this policy, please discontinue use of the App.

2. Information We Collect

2.1 Personal Data

We do not collect any personal data. Base64Helper does not require you to create an account, provide an email address, enter your name, or submit any personally identifiable information (PII) to use the App.

2.2 Usage Data & Analytics

We do not collect usage data or analytics. The App does not integrate any third-party analytics services (such as Google Analytics, Firebase Analytics, Crashlytics, or similar). No telemetry, crash reports, or usage statistics are transmitted from your device.

2.3 Advertising

The App does not display advertisements and does not integrate any advertising SDKs or ad networks. No advertising identifiers (such as AAID/GAID) are accessed or transmitted.

2.4 Locally Stored Data

The App stores the following data exclusively on your device using a local Room database (SQLite) in the App's private storage directory:

Encoding/Decoding History: Records of your encode and decode operations, including input text, output results, operation type (text/image/file), timestamps, and favorite/bookmark status.
App Settings: Your preferences such as auto-copy to clipboard, line wrapping options, URL-safe encoding, MIME prefix, image output format, image quality, and maximum image dimensions.

This data never leaves your device. You can delete individual history records or clear all history at any time from within the App. The App maintains a maximum of 100 history entries, automatically removing the oldest entries when this limit is reached.

2.5 Temporary Cache Files

Decoded images and files are temporarily saved to the App's private cache directory (context.cacheDir) for preview purposes. These files are subject to automatic cleanup by the Android operating system and are not shared with any other application or service.

3. How We Use Information

Since the App does not collect any data from your device, there is no data for us to use, process, or share. All data processing occurs locally on your device to provide the core functionality of the App:

Encoding text, images, and files to Base64 format
Decoding Base64 strings back to text, images, and files
Maintaining your operation history and preferences locally

4. Data Sharing and Disclosure

We do not share any data with third parties because we do not collect any data in the first place. The App operates completely offline and does not communicate with any external servers, APIs, or services.

When you use the "Share" feature within the App, the sharing is handled by the Android system's standard share intent (Intent.ACTION_SEND). The data is passed directly to the application you choose to share with (e.g., messaging apps, email clients, social media). Base64Helper does not monitor, intercept, or retain any information about what or with whom you share.

5. Permissions

Base64Helper does not request any Android permissions, including but not limited to:

No INTERNET permission — the App is fully offline
No ACCESS_NETWORK_STATE permission
No READ_EXTERNAL_STORAGE or WRITE_EXTERNAL_STORAGE permissions
No CAMERA permission
No location permissions
No contacts, calendar, or sensor permissions

The App accesses files and images using the Android system file picker (ActivityResultContracts.GetContent() and OpenDocument()), which does not require storage permissions. Images are saved to the device gallery via the MediaStore API (Android 10+), which also does not require storage permissions.

6. Third-Party Libraries

The App uses the following open-source libraries, all of which operate locally and do not collect or transmit any data:

Android Jetpack Libraries (AndroidX Core, Activity, Lifecycle, Navigation, Room) — Google's official Android development libraries
Jetpack Compose — Modern Android UI toolkit
Material Design 3 — UI component library
Coil Compose — Local image loading library (used only to display images from local memory/disk; no network loading)
Gson — JSON serialization (used only for local data migration from legacy storage)
Kotlin Coroutines — Asynchronous programming framework

None of these libraries are configured for data collection, analytics, or network communication. The App does not use any Firebase, Google Play Services, or other Google proprietary SDKs beyond the standard AndroidX libraries.

7. Children's Privacy

Base64Helper does not collect personal information from anyone, including children under the age of 13. Since the App does not collect any data and operates entirely offline, it is compliant with the Children's Online Privacy Protection Act (COPPA) and similar regulations worldwide.

8. Data Security

All data processed by the App remains entirely on your device within the App's private storage sandbox, which is protected by the Android operating system's built-in security model. Other applications cannot access Base64Helper's private data. Since no data is transmitted over the network, there is no risk of data interception during transmission.

9. Data Retention and Deletion

All locally stored data (history records and settings) remains on your device for as long as you use the App. You can delete your data at any time through the following methods:

Delete individual history records from the History screen
Batch-delete multiple records using multi-select
Uninstall the App, which removes all App data from your device permanently

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in the App's functionality or applicable regulations. When we do, we will update the "Last Updated" date at the top of this page. We encourage you to review this Privacy Policy periodically. Continued use of the App after any changes constitutes your acceptance of the updated policy.

11. Your Rights

Depending on your jurisdiction, you may have certain rights regarding your personal data, such as the right to access, rectify, delete, or port your data. Since Base64Helper does not collect any personal data, these rights are inherently satisfied — you have full control over all data stored locally on your device.

Under regulations such as the GDPR (General Data Protection Regulation) and CCPA (California Consumer Privacy Act), we act as a data controller that collects no personal data. There is nothing to access, delete, or port.

12. Contact Us

If you have any questions, concerns, or suggestions regarding this Privacy Policy or the App's privacy practices, please contact us at:

Email: nicol_dev@outlook.com

We will respond to your inquiry as promptly as possible.