Focusy

Settings

Your key is stored only in this browser's localStorage — it never touches our servers (there are none).

Takes ~2 minutes
YouTube Data API v3 key
Needed to import playlists and auto-fetch video chapters. No key? Video chapters still work via manual paste on the Add video page.
← Back to Add video
Backup & restore
Move your playlists, videos, folders, watch progress and notes to another browser or device with one JSON file. Your API key and player settings stay on this device.
When restoring

Replace overwrites what's saved in this browser. Merge keeps it, adds what the file has, and takes the newest watch progress and notes — nothing is deleted.

How to get a free API key
Step-by-step — keep this page open and work through the links in new tabs.
  1. 1

    Create a Google Cloud project

    Open Google Cloud Console and sign in with your Google account. Click the project dropdown (top-left) → New Project, give it any name like “Focusy”, and create it. It's free — no billing needed for YouTube API quota.

    Open Cloud Console
  2. 2

    Enable the YouTube Data API v3

    Open the API Library page below, make sure your new project is selected, then click Enable. This turns on YouTube access for your project.

    Open API Library (YouTube Data API v3)
  3. 3

    Create an API key

    Go to Credentials → Create Credentials → API key. Google will show you a key starting with “AIza…”. Copy it.

    Open Credentials page
  4. 4

    Restrict the key (recommended)

    Click Edit on the new key. Under Select API Restrictions, select 'YouTube Data API v3'. Then under Application restrictions choose 'Websites' and add 'https://focusy-rosy.vercel.app/*'. A copied key is now useless anywhere else. Click Done and finally click Save.

  5. 5

    Paste it below and test

    Paste the key into the input below, hit Save key, then Test key. A ✓ message means you're ready to import playlists and auto-fetch video chapters.

Quota note: Google's free tier allows ~10,000 units/day (≈ 6,000 video lookups). If you ever hit the limit, the app tells you and you can paste chapters manually instead.