A simple, powerful text editor that auto-saves your work
A clean, distraction-free text editor that runs entirely in your browser. Your notes are automatically saved to localStorage, so you never lose your work — even if you close the browser. Create multiple notes using tabs, format with bold, italic, lists, and headings, and download your notes when needed.
| Mechanism | Typical limit | Survives? | Suits |
|---|---|---|---|
localStorage | 5–10 MB per origin | Yes, until site data is cleared | Plain text notes, settings |
sessionStorage | 5–10 MB | No — cleared when the tab closes | Draft state within one visit |
| IndexedDB | Hundreds of MB to GB, quota-based | Yes | Many notes, attachments, offline apps |
| Cookies | 4 KB total | Yes, until expiry | Never use for note content |
| Origin Private File System | Quota-based | Yes | Large files, near-native performance |
| Cache Storage | Quota-based | Yes | Offline assets, not user data |
| Plain text | Rich text | |
|---|---|---|
| File size | Tiny | Much larger — markup dominates |
| Portability | Opens anywhere, forever | Depends on the format |
| Paste behaviour | Predictable | Carries hidden Word styling |
| Search and diff | Trivial | Awkward |
| Formatting | Markdown, by convention | Native |
| Best for | Notes, code, drafts, anything long-lived | Documents intended to be printed or shared as-is |
Save notes as UTF-8. It represents every script — Devanagari, Tamil, emoji, accented Latin — and is the default almost everywhere on the web. The classic failure is opening a UTF-8 file in a tool that assumes a legacy Windows codepage, which turns a curly apostrophe into ’ and Hindi into rubbish. Excel is the notorious offender: it writes CSVs in the local codepage and expects a byte order mark on UTF-8 input. If you must interchange with Excel, save as UTF-8 with BOM.
.txt or .md file in a synced folder outlives every browser.In localStorage, which is part of your browser profile on your own device. Nothing is sent to a server, so the notes survive refreshes and reboots but exist only in that browser on that machine.
Clearing the cache alone usually does not touch them, but clearing "cookies and site data" deletes them permanently with no recovery. Incognito windows discard everything when closed.
Between 5 and 10 MB per origin depending on the browser, which is roughly a million words of plain text — far more than notes require. Applications needing more use IndexedDB instead.
No. Storage is tied to one browser profile on one device, and there is no sync. Export to a file in a synced folder if you need the notes elsewhere.
No. localStorage is readable by any JavaScript running on that origin and is stored unencrypted on disk. Never put passwords, API tokens or card details there.
Everything on this page runs in your browser — nothing you type is uploaded or stored.
Short, exact answers to the questions people ask alongside this tool — the number first, then the working.
For teams, not just visitors
We build the calculators on SnoopTool as embeddable widgets in your branding, wired to your own lead form — the same maths, your colours, your domain, your leads. Tell us which one and we will send back a working demo you can put in front of your team.
Thanks — we have it, and you will get a reply from a person within one business day. Meanwhile every tool on SnoopTool stays free, with no signup.