Online Notepad - Saves in Your Browser, Word Count, Download as .txt

About half a second after you stop typing, your notes are written to your browser's localStorage under one key. They are also written at once when you switch tabs, close the page or leave the tool, and the page shows when it last saved. The stored notes are read before anything is written, so a blank page can never replace what you wrote. If stored notes cannot be read, for example because the data is damaged, a copy is kept under a second key and you can download it instead of it being overwritten.

localStorage belongs to one browser on one device. MDN says browsers can store up to 5 MiB of local storage per origin and throw a QuotaExceededError when it is full. If that happens this page says so and keeps your text on screen so you can download it. MDN also notes that private windows may apply different quotas and usually delete stored data when they close. Clearing site data, or using another browser or device, removes or hides your notes, so download anything you cannot lose.

A note's title is its first line with text, or a name you give it with Rename. New note adds one at the top of the list. Delete note and Delete all notes both ask you to confirm. Up to 100 notes are kept, each up to 500,000 characters. Words are runs of characters between spaces or line breaks. Characters are counted as Unicode code points, so a simple emoji counts as one. Lines are numbered as an editor numbers them, so a line break at the end starts a new, empty line.

Download .txt saves the open note as UTF-8 text. Open a .txt reads a file of up to 1 MB as a new note. It understands UTF-8 and UTF-16 files that start with a byte order mark, turns Windows and old Mac line breaks into plain ones, and refuses files that look binary or are not valid UTF-8 rather than showing garbage. Undo and redo are your browser's own text box behaviour (Ctrl+Z and Ctrl+Y). The undo history is kept while you stay on a note and starts again when you switch notes.

If the notepad is open in two tabs, the tab you edit last wins. The other tab is told that the notes changed (the browser's storage event only reaches tabs other than the one that made the change, MDN) and offers to load the other version. Before this page replaces a version that another tab saved, it keeps a copy of that version under a separate key, and the page offers it as a download until you choose Delete saved data. A save never replaces a version this page has not seen without keeping it first.