Privacy policy
Last updated: 14 November 2026
- Your PDFs and notes stay on your device. WifloMark never uploads them.
- No account, no ads, no tracking or analytics.
- Only things you choose to use go online: YouTube searches and videos, and (when available) Google Drive sync.
Who we are
WifloMark (“we”, “us”) is a free study app for PDFs that runs in your web browser. Questions about privacy: hello@wifloshare.com.
What stays on your device
WifloMark is a web page that works like an app. When you open a PDF, your own browser reads it. We do not receive your PDF, your notes or anything you write. All of this is stored only in your browser's storage on your device:
- your notes, highlights, pen strokes, tape, stamps and pictures;
- your revision dates, flashcard progress, chapters and bookmarks;
- the search text that WifloMark reads from picture PDFs (this reading happens on your device);
- your settings, saved pens, open tabs, saved lecture links and, if you add one, your YouTube API key;
- permission to a folder you pick (for your study desk or backups) – WifloMark only reads and writes there when you ask it to.
Clearing your browser's site data deletes this copy. Backup files you save are yours: they live in the folder you chose, and any cloud service that syncs that folder is between you and that service.
What goes online, and to whom
| When | What is sent | To |
|---|---|---|
| Loading the website | Standard web request data (IP address, browser type, time). We do not keep our own logs or use analytics. | Cloudflare, our hosting provider |
| You search for lectures | Your search words and your own API key | YouTube Data API (Google) |
| You play a video or see thumbnails | The video request, as with any embedded video | YouTube (privacy-enhanced youtube-nocookie.com player), or Vimeo / Google Drive if you saved such a link |
| Google sign-in and Drive sync – when this optional feature is available and you turn it on | Your notes backup | Your own Google Drive (see below) |
YouTube, Vimeo and Google handle that data under their own privacy policies, for example the Google Privacy Policy. Use of YouTube is also subject to the YouTube Terms of Service.
Google sign-in and Drive sync (optional)
We are adding an optional way to keep your notes in sync across devices using your Google account. If you choose to use it:
- We ask only for your basic profile (name, email address, picture) to show who is signed in, and for access to a private app folder in your Google Drive (or only to files WifloMark itself creates). WifloMark cannot see your other Drive files.
- Your notes backups are stored in your own Google Drive. They are not stored on our servers.
- We use this data only to sync your notes for you. We do not sell it, use it for advertising, or let people read it.
- You can sign out at any time, and remove WifloMark's access in your Google Account settings under “Third-party apps and services”. Deleting the app folder data from Drive removes the synced copy.
WifloMark's use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.
Cookies and tracking
WifloMark does not use advertising or tracking cookies and has no analytics. Browser storage is used only for the app's own data listed above. Embedded videos may set cookies according to the video provider's policy.
Children
WifloMark is meant for students and adults. It is not directed at children under 13, and we do not knowingly collect personal data from them.
Your choices
- See, back up or delete your data at any time – it's on your device. Clearing site data for this website removes it from the browser.
- Remove your YouTube API key in the Lectures panel.
- Withdraw folder or Google access in your browser or Google Account settings.
Changes
If this policy changes, we will update this page and the date at the top. Important changes will also be shown in the app.