Where exactly are my notes stored?+
In the localStorage area of the browser you are using, on the device you are using, under a single key belonging to this site. There is no server involved: the text never travels over the network, there is no account, and nobody operating this site can read it. The trade-off is that the notes are tied to that one browser profile. Chrome on your laptop and Safari on your phone are two separate stores that know nothing about each other, and so are a normal window and a private window in the same browser.
Will my notes survive closing the tab, or restarting the computer?+
Yes, in a normal window. localStorage persists across tabs, restarts, and updates until something explicitly removes it. What removes it: clearing site data or cookies for this site, running a cleaning tool such as CCleaner or a browser extension that clears storage, using the browser's own delete browsing data with the site data box ticked, or, on some mobile browsers, letting the operating system reclaim space from a site you have not opened in a long time. A private or incognito window keeps notes only until the last such window closes, and then discards them.
Is this a backup?+
No, and it is worth being blunt about it. Browser storage is convenient, fast, and private, but it is a cache that a single stray click on a privacy setting can empty. Treat this page like a paper notebook on your desk: excellent for daily work, not where the only copy of something important should live. The Export all notes button writes a JSON file containing every note. Do that after any session you would be annoyed to lose, and keep the file somewhere that is not this browser.
What happens when the storage runs out?+
The write fails and you are told, immediately and specifically, rather than the page quietly dropping your last paragraph. Browsers allow roughly 5 MB per origin for localStorage, shared across everything this site keeps in your browser. That is a lot of plain text, around two million characters, so most people will never see it. If you do, export a backup first, then delete the longest notes you no longer need. The meter on the page shows the real measured byte count, not an estimate.
Why are there limits of 100 notes and 200,000 characters?+
Both exist to keep the page fast and to stop one note eating the whole storage budget. 200,000 characters is about 35,000 words, longer than most dissertations chapters, and holding much more than that in a single browser text area makes typing feel sluggish. One hundred notes keeps the list scannable and the saved payload small enough to write in a few milliseconds after every pause. If a project needs more than that, it has outgrown a browser notepad and wants a real file on disk.
Can I use this offline?+
Once the page has loaded, yes. Everything runs in JavaScript in the tab, so you can carry on writing with the network off and autosave keeps working, because it only ever writes to your own browser. You do need a connection for the initial load, since the page is not installed as an offline app. If you know you will be offline, open the page before you disconnect and leave the tab open.
What is the difference between downloading .txt and .md?+
Only the file extension and the media type. Both downloads contain exactly the characters you typed, with no conversion or formatting applied. Choose .txt when the text is prose destined for a plain editor, and .md when you have written Markdown, so your editor, static site generator, or repository renders the headings and lists. Neither download is a backup of your other notes: for that, use Export all notes, which writes every note into one JSON file.
Why can I not use a regular expression in find and replace?+
Because the cost of getting it wrong is far higher here than in a scratch tool. Replace all with a slightly wrong pattern can rewrite an entire note in one click, and the only copy of that note may be in this browser. Plain-string search also does what most people actually want: a full stop matches a full stop, and a bracket matches a bracket. If you genuinely need pattern work, build and test it in the regex tester, which shows every match and lets you check the replacement before you commit, then paste the finished text back here.
How do I move my notes to another computer?+
Export all notes on the first machine, move the JSON file across however you like, then open this page on the second machine and use Import a backup. The import validates the file first, ignores anything it cannot read, and merges what is left into whatever is already there. Nothing is overwritten: if a note in the file has the same id as one already present but different text, both are kept and the imported one is labelled, so you can compare them and delete the loser yourself.
Do the counts here match the word counter?+
The words, characters, lines, and paragraph counts use the same definitions, and reading time uses the same 238 words per minute. The word counter goes further, breaking text into sentences, keyword density, and readability using the browser's Unicode segmentation, which is more accurate for languages that do not separate words with spaces but far too slow to run on every keystroke. For a long final check on a piece of writing, paste it into the word counter. For a running count while you type, the numbers under this editor are the right tool.