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To-Do List
    Backup

    JSON is the full backup. CSV has one row per task (text, done, due date, priority) and keeps their order. Your data lives in this browser only: clearing site data or switching device loses it, so export a file to keep a copy.

    More info

    How to use the to-do list

    1. Type a task and press Enter or Add task. A due date and a priority are optional.
    2. Tick the box when it’s done. Use All, Open and Done to choose what you see.
    3. ↑ and ↓ move a task up or down. Edit changes its text, date or priority.
    4. Clear completed removes everything you’ve ticked. Undo brings back a deleted task or a cleared list.

    Questions

    Do I need an account? No. There’s no sign-up and nothing is uploaded: the list stays on this device.

    Where is my list saved? In this browser only. Clearing site data, or opening the page on another phone or computer, starts with an empty list. Use Export JSON to keep a backup and Import to load it again.

    What does CSV hold? One row per task with its text, whether it’s done, its due date and priority. It opens in any spreadsheet. JSON is the full backup.

    How many tasks can I have? Up to 500, with up to 200 characters each.

    Is an imported file safe? The page checks every file, ignores anything it doesn’t understand and shows what it added. A bad file changes nothing.