Lumiflow Privacy Policy

Last updated: April 13, 2026

Lumiflow is a Chrome extension that helps users read webpage content in a focused reading view.

What Lumiflow accesses

Lumiflow only accesses webpage text when the user explicitly starts a reading session:

• by clicking the extension popup button
• by using the keyboard shortcut
• by using the context-menu action on selected text

Lumiflow does not run continuously across websites by default.

Data Lumiflow stores

Lumiflow stores the following settings using Chrome extension storage:

• selected reading mode
• selected chunk size
• last used WPM
• selected preview font
• bionic reading preference
• auto-advance preference

These settings are used only to restore the user’s reading preferences.

Lumiflow also stores the current reading session content temporarily in Chrome session storage so the extracted text can be shown in the reader window. This temporary session data is not used for analytics, advertising, profiling, or sale.

What Lumiflow does not do

Lumiflow does not:

• sell user data
• use user data for advertising
• transfer user data to data brokers
• send webpage text to third-party AI providers
• load or execute remote code
• collect payment information
• collect precise location information
• require an account

How data is used

Lumiflow uses accessed webpage text only to:

• extract readable text from the page or selection the user chose
• open the immersive reader window
• render the reading session locally in the browser

Data sharing

Lumiflow does not share user data with third parties.

Data retention

• Preference data remains in Chrome extension storage until the user changes it or removes the extension.
• Session reading content is temporary and stored only for the active reading flow in Chrome session storage.

Security

Lumiflow keeps processing local to the browser extension and limits page access to explicit user-triggered actions.

Support

For support or questions, visit https://github.com/tommyshang/lumiflow-site/issues .