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Cookie Policy

Last updated: February 18, 2026

This Cookie Policy explains how SparkWriter uses cookies and similar tracking technologies when you visit or use our platform. It should be read alongside our Privacy Policy.

1. What Are Cookies?

Cookies are small text files stored on your device when you visit a website. They help the website remember your preferences and provide a better user experience. Cookies can be "session" cookies (deleted when you close your browser) or "persistent" cookies (remain until they expire or you delete them).

2. Cookies We Use

Essential Cookies (Required)

These cookies are strictly necessary for SparkWriter to function and cannot be disabled.

CookiePurposeDuration
__clerk_*Authentication session and user identitySession
x-localeLanguage preference1 year
sparkwriter-themeTheme preference (light/dark/system)1 year
__cf_*Cloudflare security and bot protectionSession

Functional Cookies

These cookies enable personalized features and help remember your settings.

CookiePurposeDuration
sidebar-collapsedRemember sidebar statePersistent
editor-preferencesEditor settings (auto-completion, etc.)Persistent

3. Local Storage

In addition to cookies, SparkWriter uses browser local storage and session storage for similar purposes, including caching document data for offline resilience, storing UI preferences, and managing temporary session state. These follow the same principles as our cookie usage.

4. Third-Party Cookies

Some cookies are set by third-party services we use:

  • β€’Clerk: Authentication-related cookies for secure login sessions.
  • β€’Cloudflare: Security cookies for DDoS protection and bot detection.

SparkWriter does not use advertising cookies or share cookie data with advertisers.

5. Managing Cookies

You can manage cookies through your browser settings:

  • β€’Chrome: Settings > Privacy and Security > Cookies
  • β€’Firefox: Settings > Privacy & Security > Cookies and Site Data
  • β€’Safari: Preferences > Privacy > Manage Website Data
  • β€’Edge: Settings > Cookies and Site Permissions

Note: Disabling essential cookies will prevent SparkWriter from functioning correctly. You may not be able to log in or use the editor if essential cookies are blocked.

6. Contact

If you have questions about our use of cookies, please contact us:

Email: privacy@sparkwriter.app

Cookie Policy | SparkWriter