Privacy Policy
Last updated 3 November 2026
The short version. Zenfo keeps the pages, videos and chats you save so you can organize them and ask questions about them. When you open Zenfo on a page, it reads that page and, unless you switch auto-save off, saves a full copy of it. What you save is stored on Google's servers, where Zenfo runs, and processed by Google's Gemini AI and the service providers listed below. We don't sell your data, show ads, use analytics or trackers, or train AI models on what you save. You can delete anything you've saved, or your whole account.
Who we are
Zenfo is a browser extension, a web app at app.zenfo.ai and an Android app for saving web articles and YouTube videos, organizing them, and chatting with them using AI. It is made and run in Australia. In this policy "Zenfo", "we" and "us" mean the people who run it; "you" means anyone who uses it.
Questions or requests about your data: zenfo.ai@gmail.com.
What we collect
Your account
- Your email address and name, which you enter, or which your Google account shares when you sign in with it.
- Your password, if you sign up with email. Firebase Authentication (part of Google) stores it in hashed form; we never see it.
- Which ways you sign in (password, Google or Facebook), and when the account was created and last signed in.
- A record of your sign-up: when you create an account, we're emailed your name, email address and how you signed up, so we can spot fake accounts.
What you save
- For a web page: its address, title and icon, its content as your browser showed it (including details such as its author and publish date), and its preview image.
- For a YouTube video: its address; its title, description, length, and whether it's public, made for kids or age-restricted, as YouTube reports them; and its transcript, which Gemini writes from the video. We don't read YouTube's pages, so we keep no comments.
- For a YouTube video embedded in a web page you save: its address, and its description, length, and whether it's public, made for kids or age-restricted, as YouTube reports them. YouTube requires us to look up whether each video we show is made for kids.
- The search index we build from what you save, so you can search it and chat with it.
- How you organize it: folders, tags, priorities, favourites, the titles and descriptions you change, how far you've read, where you stopped in a video, the name of the Chrome tab group it was saved from, and whether it was saved from an Incognito window.
Your chats
- Your questions, Zenfo's answers, and the saved content each answer drew on.
- Each chat's settings: which saved items, folders, tags or priorities it covers.
- If you turn on web search for a chat, the searches it ran and the pages it cited.
Settings
- Your preferences, such as whether the extension saves pages automatically and how folders are sorted.
- If you lock your Private space with a PIN, a salted hash of the PIN, never the PIN itself.
Technical information
- Logs of what our servers do, which Google Cloud deletes after a year. They hold account, item and video IDs, the IP address and browser of each request the app makes to our servers, timings and errors, and may include the address, title and author of a page you save, but not your chats or the text of your pages. When you sign up, they also record your name, email address and how you signed in. We use them only to keep Zenfo running and fix problems.
- Counters of how much each account uses the AI features, so no one can run up costs or crowd out other users, and records of saves that failed.
What we don't collect
- No analytics, advertising or tracking tools: Zenfo's apps, extension and this website use none.
- No payment details. Zenfo is free and takes no payments.
- The extension doesn't read your browsing history, your cookies or what you type, and doesn't look at a tab until you open Zenfo in it.
How Zenfo reads pages
- The extension can't see a tab until you click its icon there. Zenfo then reads the page: its address, title and icon, its full content as your browser shows it, the name of its tab group, and whether it's in an Incognito window.
- While Zenfo stays open in the tab, it reads the page again whenever the address changes within the site, for example as you move around a web app. Once the tab loads a new page, Zenfo can't see it until you click the icon again.
- Each time, Zenfo looks the page up in your library to show whether you've saved it. The lookup itself stores nothing.
- Auto-save is on unless you switch it off in Settings. While it's on, every page Zenfo reads this way is saved. While it's off, nothing is saved until you ask.
- Saving keeps everything Zenfo read from the page. If the page shows personal information, such as your name, email address or messages on a site you're signed in to, that's saved too. Switch auto-save off before opening Zenfo on pages like that.
- Pages saved from an Incognito window go to your Private space unless you change that in Settings. The Private space keeps items out of your library and chats unless you include it, behind a PIN if you set one. Its items are still stored and processed like everything else.
- On Android, when you share a link to Zenfo, the app opens the page out of sight on your phone, as a browser would, to read it. If it finds a sign-in, a pop-up or a browser check where the article should be, it shows you the page to save yourself.
- On Android, when you add a page by its link, the app shows you the page and saves it as you see it. If you sign in to a site there, the sign-in stays in the app on your phone, as it would in a browser, and isn't sent to us; what the page then shows is saved, as above. Either way, the page's own scripts run as they would in a browser.
- Otherwise, if you add a page by giving Zenfo its link, our servers download the page from its site to read it. On Android, that happens only if a page won't open on your phone and you choose to save just its link.
How we use it
- To provide Zenfo: storing what you save, showing it on all your devices, and searching it.
- To answer your questions in chat, using the saved items each chat draws on.
- To keep Zenfo secure and working: preventing abuse, enforcing usage limits, and fixing errors.
- For the emails Firebase Authentication sends for your account, such as confirming a new email address when you change it.
We don't sell your personal information, share it for advertising, or use it to train AI models.
AI processing
Zenfo's AI features run on Google's Gemini API. What you save is sent to Gemini to build its search index. Gemini also writes the transcript of each YouTube video you save, from the video itself, given only the video's address. When you chat, your question, the conversation so far and the relevant content of the saved items the chat draws on are sent to Gemini to write the answer, along with the addresses of any YouTube videos among them. These requests don't include your name or email address.
Zenfo uses Gemini's paid service. Under Google's terms for it, Google doesn't use your prompts or its answers to improve its products, and logs them for a limited time only to detect abuse. Google also stores each chat's conversation for 55 days so that follow-up questions have context. Deleting a chat in Zenfo doesn't remove Google's copy sooner.
If you turn on web search for a chat, Gemini also searches Google to answer, and Google keeps those prompts and answers for 30 days.
Who processes your data
We use these kinds of service providers to run Zenfo. Each receives only what it needs for its part.
- Google (Firebase and Google Cloud) hosts Zenfo: sign-in, the database, file storage, the servers and their logs, and these websites. It holds everything described above.
- Google's Gemini API provides the AI features, as described above.
- YouTube API Services provide details of the videos you save, and of the YouTube videos in pages you save.
- A search database provider holds the search index of what you save, with your account ID and each item's ID, tags, folder and priority, but not its text.
- Google, or Facebook where offered, if you choose to sign in with them, under their own privacy policies.
When you save a page, our servers download its preview image and its icon from the sites that host them, and the page itself too if you added it by its link. Those sites see a request from our servers, not from you. When Zenfo has only a page's link, Gemini reads the page whenever you ask about it, from Google's own copy or from the site, which then sees a request from Google.
Your browser also loads code, fonts and media directly from content delivery networks, YouTube, and the sites of the pages you've saved, which see your IP address and browser details under their own policies.
We'd disclose personal information to anyone else only if the law requires it, or to protect people's safety or Zenfo's users from fraud or abuse.
Where your data is stored
Zenfo's database, files and servers are in Google Cloud's us-central1 region, in the United States. Gemini and our other providers may process data in the United States or in other countries. So if you live outside the United States, your data leaves your country. We rely on our providers' contractual commitments to protect it wherever it goes.
How long we keep it
- What you save, and your chats, stay until you delete them or your account.
- Deleting a saved item deletes its content, its entries in the search index, and its stored files. Chats keep a copy of the content they drew on, so also delete any chat that used the item if you want it gone everywhere.
- Deleting a chat deletes its messages. Google's copy of the conversation expires after 55 days.
- An answer written with web search is deleted within two years of being written, as Google's terms for web search require. The rest of its chat stays.
- Server logs are deleted after a year.
- We keep the record of each sign-up, even after the account is deleted, unless you ask us to delete yours.
Deleting your account
To delete your account and everything in it, open Settings in Zenfo and choose Delete account. That deletes the account, everything you've saved, your chats, your files and your search index straight away. If you can't sign in, email zenfo.ai@gmail.com from the address you signed up with, and we'll delete it within 30 days. Copies in server logs and in Google's stored conversations expire on their own schedule, above, and we keep the record of your sign-up unless you ask us to delete it.
Your rights and choices
- You can see, edit and delete what you've saved at any time. In Settings you can switch auto-save off, or delete your account.
- You can ask us for a copy of your data, or to correct or delete it, by emailing us. We'll answer within 30 days.
- If you're in the European Economic Area or the United Kingdom, you also have the right to restrict or object to how we process your data, and to complain to your data protection authority. We process your data to provide the service you signed up for, and to keep it secure and working, which is our legitimate interest.
- If you're in Australia, you can complain to the Office of the Australian Information Commissioner if we don't resolve a privacy concern.
Security
Data travels encrypted (HTTPS), and Google encrypts the data it stores. Each account can read only its own data, and our servers check who you are on every request. No system is perfectly secure, and if a breach affects you, we'll tell you and the regulators the law requires us to.
Cookies and storage in your browser
Zenfo sets no tracking cookies. The web app keeps your sign-in in your browser's storage. While you're signed in, it also sets a cookie on zenfo.ai, zenfo_signed_in, so that this website can send you straight to the app. The cookie holds no personal information, lasts up to a year, and is cleared when you sign out. The extension keeps a short-lived sign-in token in its own storage, so you stay signed in on every site.
Age requirement
Zenfo is for people aged 18 and over, as the Gemini API's terms require. We don't knowingly collect data from anyone younger. If you believe someone under 18 has an account, email us and we'll delete it.
YouTube
Zenfo uses YouTube API Services. The YouTube Terms of Service apply to the YouTube videos you save in Zenfo, and the Google Privacy Policy explains how Google handles data.
Google user data and the Chrome Web Store
Zenfo's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, and its use of information received through the Chrome extension complies with the Chrome Web Store User Data Policy, including the Limited Use requirements of both. That information is used only to provide Zenfo's features, and is never sold or used for advertising.
Changes to this policy
When we change this policy, we'll update the date at the top. If a change affects how your data is used in a significant way, we'll tell you in the app or by email before it takes effect.