Fresnll – Smart, Lightweight Browser Extension to Instantly Surface your Knowledge Base

See your team’s knowledge exactly where it’s needed.

Fresnll is a browser extension that brings your company’s knowledge base directly into the websites your team uses. No more searching. Just hover and know.

Install from Chrome Web Store

How It Works

Create And Share With Others

Manually add terms, export or import to spread knowledge across your team.

Fresnll Highlights Key Terms

Relevant terms are highlighted on any allowed site.

Instant Context on Hover

Hover to see supporting info without leaving the page.

Fresnll — Inspired by the Fresnel lens, delivering lightweight tools to focus your team’s knowledge.

Privacy Policy

Last Updated: 09.09.2025

Fresnll (“the Extension”, “we”, “our”) is a browser extension designed to help teams share and surface knowledge directly within their workflow. Protecting your privacy and complying with the European Union General Data Protection Regulation (GDPR) is a top priority.1. Data We CollectUser-provided data: Glossary terms, descriptions, tags, and highlight settings that you add or import.2. How Data Is StoredAll glossary content and settings are stored locally in your browser storage (e.g., chrome.storage.local or IndexedDB).No data is transmitted to us or any external server as part of the core functionality.3. Purpose of Data ProcessingTo display glossary highlights and popovers directly on web pages.To allow importing and exporting glossary data for sharing with teammates.To persist your configuration and preferences across browsing sessions.4. Legal Basis under GDPRWe process your data based on:
Article 6(1)(b) GDPR – processing is necessary for the performance of the service you request (highlighting glossary terms).5. Data SharingWe do not sell, rent, or trade your data.Fresnll does not transmit or share your data with third parties.No tracking, advertising, or analytics are used.6. Your Rights under GDPRYou have the right to:
Access your stored data.
Correct or delete your glossary data.
Uninstall the extension to remove all stored data.File a complaint with your local data protection authority.
Because Fresnll stores data locally, you can exercise these rights directly in your browser.7. Data RetentionGlossary terms and settings remain in your browser until you delete them or uninstall the extension.We do not retain any copies.8. Contact
If you have questions about this Privacy Policy or your data, please contact us at:
[email protected]