Privacy Policy For PDF Resizer - PDF Viewer
Last updated: 27 July 2026
Supetech ("we", "us", or "our") operates the PDF Resizer - PDF Viewer mobile application (the "App"). This page informs you of our policies regarding the collection, use, and disclosure of information when you use our App, and the choices you have associated with that information.
By using the App, you agree to the collection and use of information in accordance with this policy.
1. Information We Collect
Information you provide
The App does not require you to create an account, sign in, or submit any personal information such as your name, email address, or phone number.
Your documents and files
The App reads PDF files from your device so it can display them. Your documents never leave your device. All rendering, text search, highlighting, and image conversion is performed locally on your device. We do not collect, upload, transmit, or store:
- Your PDF files, or any part of their contents
- File names, folder names, or file paths
- Text that you select, highlight, or search for
- Your search queries
The App stores the following only on your own device, and it is never transmitted to us or to anyone else. It is removed when you uninstall the App:
- A list of the PDF files found in the folder you selected, including their names, sizes, and page counts
- Your reading position in each document, so the App can offer to return you to the page you left off on
- Bookmarks and highlights that you create
- Your preferences, such as theme and default zoom
Information collected automatically
The App uses Google Firebase Analytics, a third-party analytics service provided by Google, to collect anonymous, aggregated usage statistics. This information is not linked to your identity and never includes anything from your documents. It consists of:
- A randomly generated app instance ID — an identifier for your installation of the App, which is not tied to your name, email, or any account
- Device and application information — device model, operating system version, App version, language, and country or region (derived from your IP address by Google, which then discards it)
- Anonymous interaction events — a count of two actions only: that a document was opened, and that a highlight was created (including which of the four highlighter colours was used)
That is the complete list of events the App sends. We do not collect your precise location, contacts, photos, messages, financial information, or data belonging to any other app.
Permissions
The App requests no runtime permissions. It does not ask for storage, location, camera, microphone, or contacts access. Instead of broad storage access, you select a single folder using Android's built-in file picker, and the App can only read PDF files inside the folder you explicitly choose.
The App declares two install-time permissions:
| Permission | Why it is needed |
|---|---|
INTERNET |
To send the anonymous analytics events described above. Nothing else uses the network. |
ACCESS_NETWORK_STATE |
Allows the analytics library to avoid attempting uploads while your device is offline. |
2. How We Use Your Information
We use the anonymous information collected automatically for the following purposes:
- To understand which features of the App are used, and how often
- To identify errors, crashes, and areas where the App performs poorly
- To decide which improvements to prioritise in future versions
We do not use your information for advertising, and we do not sell, rent, or trade any information to third parties. The App contains no advertisements and no in-app purchases.
Files the App creates
When you ask the App to save highlights into a new PDF, or to convert a PDF into images, the resulting files are written only to a location you select yourself through Android's own save or folder picker. Converted images are placed in their own subfolder and are not added to your photo gallery or shared media. The App gains no additional access to your storage by doing this.
Third-party services
| Service | Purpose | Information involved |
|---|---|---|
| Google Firebase Analytics | Anonymous usage statistics | App instance ID, device and app information, and the two interaction events listed in Section 1 |
Firebase Analytics processes this information on our behalf. Its use of information is governed by Google's Privacy Policy. We operate no servers of our own, and no other third-party service receives any information from the App.
The App also uses open-source software to display documents, including Google's AndroidX PDF
libraries, Android's built-in PdfRenderer, and Apache PDFBox. These run entirely on your
device and make no network connections.
3. Data Retention and Backups
The anonymous analytics information described in Section 1 is retained by Google Firebase for the retention period configured in our Firebase project, and is deleted automatically after that period. We do not keep any separate copy of it. Uninstalling the App resets the random app instance ID.
The document library, reading positions, bookmarks, and highlights stored on your device are removed when you uninstall the App.
If you have Android's system backup enabled, your App preferences may be included in your Google account backup, governed by Google's own privacy policy. Your document library, reading progress, and highlights are deliberately excluded from backup, because they refer to file locations that are specific to a single device.
4. Data Security
We take reasonable measures to protect your information. Because your documents and reading data remain on your device and are never uploaded, they are protected by your device's own security, such as your screen lock and Android's app sandbox. The anonymous analytics information described in Section 1 is transmitted to Google Firebase over an encrypted HTTPS connection.
5. Children's Privacy
Our App is not intended for use by children under the age of 13. We do not knowingly collect personal information from children under 13. The App requires no account and collects no personal information from any user, regardless of age.
If you believe that a child under 13 has provided us with personal information, please contact us at the address in Section 7. We will take steps to delete any such information from the analytics records available to us.
6. Changes to This Privacy Policy
We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date at the top. You are advised to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.
7. Contact Us
If you have any questions or suggestions about this Privacy Policy, please contact us:
- By email: anisrahman.contact@gmail.com
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By using PDF Resizer - PDF Viewer, you agree to this Privacy Policy.
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