Everyday tool

To-do List

Simple online to-do list with add, check off, edit, and clear. Saves in your browser—no login.

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How to use

Follow these steps for a clear answer.

Type in the field and press Add or Enter—items save locally.

Tick the checkbox when done; edit text inline anytime.

Delete a single row with ✕, or Clear all to start fresh.

Version 2.0.0 · Last reviewed 2026-07-28

Definition: A to-do list stores ordered tasks that can be marked done, edited, or removed.
What it calculates: Persistent checklist counts (total, done, remaining) from local items.
Inputs: New item text + Add / Enter
Checkbox done state
Inline edit and remove
Clear all
Outputs: Ordered checklist
Counts in status
Formula: done = count(items where done); left = total − done
The To-do List keeps a lightweight checklist in your browser. Add with Enter, check items off as you go, edit inline, and clear when finished—controls are at the top so mobile users can act on the first screen.
Assumptions: Persistence key is browser localStorage.
Empty Add is ignored.
Units: Items (unitless)
Boundary conditions: Clear all empties storage for this list.
Very long text may wrap on small screens.
Example: Add Buy milk → check off → 1 done · 0 left
Validation cases: Add then check → done count increases
Remove ✕ → Item deleted from storage
Sources: Browser localStorage JSON list
Last reviewed: 2026-07-28
Calculation version: 2.0.0

Key distinctions behind the tool.

Where are tasks stored?

In this browser’s localStorage on your device. Clearing site data removes them.

Can I edit an item after adding it?

Yes. Change the text inline in the list row.

Does it sync across devices?

No. Each browser keeps its own list.

Is my list uploaded?

No. Items never leave your device.