Privacy Policy

July 22, 2026 ยท View on GitHub

Introduction

MarkerOn is a lightweight desktop screen annotation tool. We highly value your privacy, and this policy explains how we handle your data.

Data Collection and Usage

Information We Do Not Collect

MarkerOn explicitly commits to:

  • Not creating any unique identifiers, trackers, or similar tools
  • Not collecting usage statistics, performance metrics, or any user behavior information
  • Not uploading annotations, screenshots, or personal data to remote servers
  • Not incorporating advertisements or analytics tools
  • Not selling or sharing your personal data with third parties

Locally Stored Data

MarkerOn only saves the following information locally:

  1. Configuration Data Shortcut keys, general preferences (e.g. auto-start, drag mode), and related settings.

    • Installed builds: stored in the Tauri / OS application data directory (for example AppData on Windows).
    • Portable builds: stored under a data\ folder next to the executable (not AppData).

  2. Drawing Data Annotations exist only in memory during the app process and are never written to disk or uploaded. By default, exiting annotation mode clears drawings. If Keep after exit is enabled in Settings, drawings remain in memory until the next annotation session or until you quit the app.

Network Access

MarkerOn does not send telemetry, crash reports, or user content to remote servers.

Optional network use (installer builds only, when you choose to):

  • Update checks / downloads via the built-in updater (GitHub Releases metadata and installers), when you tap check/update in About
  • Opening links you choose (project homepage, help, sponsor, Store, and similar) through the system browser

Portable builds do not use the in-app updater; update by downloading a new zip manually.

MarkerOn is local-first: no account, no cloud sync of drawings. It is not a zero-network app when you use updates or open external links.

Data Protection and Deletion

Configuration stays on your machine. MarkerOn does not remotely sync or upload it. To remove config for an installed build, uninstall the app (and delete leftover config folders if your OS leaves them). For portable builds, delete the app folder including data\.

Permission Usage Information

System permissions requested by MarkerOn are only used to implement core functions:

  • Display Overlay: For rendering the transparent full-screen annotation layer on top of other windows
  • Global Shortcut Keys: For toggling annotation mode and clearing drawings from any application
  • File System Access: For reading and writing configuration files (and updater downloads when applicable)
  • Startup Item Modification: Only used when the "Start with System" feature is enabled

Privacy Policy Changes

If there are significant changes, we will post notifications on the project homepage and GitHub.

Contact Information

If you have questions or suggestions about this privacy policy, please contact us through the GitHub project page.

Last Updated: July 22, 2026