Lectio

Privacy policy

Last updated: November 7, 2026

Lectio Study Helper is a free Chrome extension made as a student project. This page explains what data it uses and why.

What stays on your computer

Your highlights, the highlighter setting and your last summary are saved in Chrome on your computer and are never sent to Lectio's server. Word count and reading time are calculated on your computer. When you log in, a login token is saved in Chrome so you stay logged in for 7 days; it is only sent to the server to prove it's you.

Your account

Summarize and Explain need an account. Lectio's server stores:

• your email address
• your password, only as a secure hash (nobody can read the password itself)
• whether you verified your email, plus temporary codes for verifying your email and resetting your password
• the time of each summary and explanation, to count the daily limit

The server and the database run in Frankfurt, Germany.

Summaries and explanations

When you click Summarize, the page's text (up to 20,000 characters) is sent to Lectio's server. When you click Explain, the highlighted text (up to 2,000 characters) and the page's language are sent. The server sends the text to Cloudflare Workers AI, which writes the answer. Lectio does not save this text, and Cloudflare does not keep it or use it to train AI models. Don't use Summarize or Explain on pages with private information.

Emails

Lectio only emails you to verify your account and to reset your password.

What Lectio doesn't do

No ads, no tracking, no analytics. Lectio doesn't sell or share your data.

Services Lectio uses

Vercel (runs the server; it may keep basic technical logs, like IP addresses, for a short time), Neon (database), Cloudflare (AI), Gmail (sending emails).

Delete your data

To delete your account and its data, email lectiostudyhelper@gmail.com. Removing the extension from Chrome deletes the data saved on your computer.

Contact

lectiostudyhelper@gmail.com