"Notepad with a password" might be the most-searched missing feature in Windows. Thirty years of Notepad, and the answer to "how do I lock this file" is still: you cannot, not with anything Microsoft ships in the box. Notepad saves plain text. Sticky Notes has no lock and syncs to your Microsoft account. WordPad was removed from Windows 11 in the 24H2 update. And OneNote stores your notebooks on OneDrive under Microsoft's keys.
So people improvise, usually with tools that protect something different from what they think. This page maps every real route: what each one defends against, where each one silently fails, and which fits which situation. Disclosure: one of the options is Scrib Desktop, which I built. The code is open source, so none of its claims below require trusting me.
First, Understand What You Are Protecting Against
Every "encrypted notepad" question is really one of three threats:
- Someone with your computer, unlocked: family, coworkers, a shared PC. Disk-level tools do nothing here; you need a password on the file itself.
- Someone with your computer, locked or stolen: full-disk encryption handles this well.
- The file traveling: a note copied to a USB stick, emailed, or in a cloud-drive folder. Only encryption that lives inside the file travels with it.
Keep those three in mind; each option below covers a different subset.
Option 1: An Editor with Built-In Encryption
The direct answer to the search query. Scrib Desktop is a free, open source (GPL-3.0) tabbed editor for Windows 10+ that encrypts individual files:
- Open or write a note, press Ctrl+E, set a password.
- The file saves as .scrb: AES-256-CBC encrypted with an HMAC-SHA256 integrity check, key derived via PBKDF2-SHA256 at 100,000 iterations. Tampered files are rejected.
- Press Ctrl+L and an open encrypted note locks in place, wiping the decrypted content and password from the editor until you re-enter it.
Because the encryption is in the file, it covers all three threats: the unlocked-PC snoop needs the password, the thief gets ciphertext, and the file stays encrypted on a USB stick or in a cloud folder. It is also portable (extract the zip, run, no installer, no admin rights) and has no account or telemetry. Rich text and images can live inside encrypted notes too.
Honest limits: Windows only, no sync, and encryption is opt-in per file. A forgotten password means the note is unrecoverable, which is the deal real encryption offers.
Option 2: BitLocker (Whole Disk)
BitLocker encrypts the entire drive. If the laptop is stolen powered off, the thief gets ciphertext, and that is a protection everyone should have on anyway (Windows 11 enables device encryption widely).
Where it fails the notepad question: once you log in, everything decrypts transparently. Your notes are plain text to any person, program, or cloud-sync agent using your session. BitLocker protects the disk, not the file, and nothing that leaves the disk.
Option 3: EFS (Per-File, With Traps)
NTFS's Encrypting File System (right-click a file, Properties, Advanced, "Encrypt contents") looks like the built-in answer, and it does encrypt the file with keys tied to your Windows account. The traps:
- Pro editions only. Windows Home does not include EFS.
- Transparent while logged in, so it fails the unlocked-PC threat completely.
- Protection evaporates in transit: copy the file to a USB stick, a FAT32 drive, or an email attachment and it silently decrypts.
- Account-recovery fragility: reinstall Windows without exporting the EFS certificate and the files are gone for good.
EFS is defensible on a managed corporate machine. As a personal "lock this note" tool, it mostly protects against the wrong things.
Option 4: Office Passwords and 7-Zip Archives
Word's "Encrypt with Password" is real AES encryption in modern Office, and if you already live in Word it works. Costs: an Office licence for a text note, and no recovery from a forgotten password.
7-Zip AES-256 archives are free, open source, and genuinely strong: put text files in an archive with a password and the encryption travels with the archive. Costs: the edit cycle. To change a note you extract it (often to a plaintext temp file), edit, re-archive, and hope the temporary copy is cleaned up. Fine for cold storage, clumsy for notes you touch weekly.
What About Notepad++ Plugins?
Third-party encryption plugins for Notepad++ exist, but they are small projects of varying maintenance and audit status, and you are trusting your plaintext to whichever one you pick. If you go this route, prefer plugins with public source and recent commits. For most people a purpose-built encrypted editor is the safer default.
Verdict
Everyone: turn on BitLocker or device encryption regardless; it is the free baseline against theft.
For notes you actively edit and want locked: use an editor that encrypts the file itself. Scrib Desktop is free, open source, portable, and turns "notepad with a password" into a keyboard shortcut.
For archives you rarely open: 7-Zip with AES-256 is honest, free, and durable.
For a full notes system rather than files: the app-by-app comparison is in Best Private Notes Apps for Windows, and if the notes live on your phone instead, Scrib for Android encrypts every note on-device with no account.
Common Questions
Can you password protect a file in Windows Notepad?
No. Notepad has never had a password or encryption feature: it saves plain text readable by anyone who opens the file. To get an encrypted text file you need either a dedicated encrypted editor, an encrypted container such as a 7-Zip archive, or disk-level encryption like BitLocker, each of which protects against different things.
What is the easiest way to keep encrypted notes on Windows?
A text editor with built-in per-file encryption. Scrib Desktop is free and open source: open a tab, press Ctrl+E, set a password, and the file saves AES-256 encrypted. No account, no installer, and the file stays encrypted wherever you copy it, unlike EFS or BitLocker protection, which stops at the drive.
Is EFS or BitLocker enough to protect my notes?
They protect against different threats than a file password. BitLocker encrypts the whole drive, which protects a stolen laptop but decrypts everything transparently once you log in, so anyone at your unlocked PC reads your notes. EFS ties files to your Windows account with the same logged-in transparency, requires a Pro edition, and silently loses protection when files are copied off the NTFS drive. Neither travels with the file the way a password-encrypted file does.
Does a password on a Word document actually encrypt it?
In modern Office versions, yes: password-protecting a document with Word's "Encrypt with Password" uses real AES encryption. It is a reasonable option if you already live in Word. The costs are file size, speed, the Office licence itself, and that a forgotten password means an unrecoverable document.
Are Sticky Notes private?
No. Windows Sticky Notes has no lock or password feature, and notes sync to your Microsoft account, where they are stored under keys Microsoft holds. Treat Sticky Notes as the digital equivalent of paper on your monitor: fine for reminders, wrong for anything sensitive.
Keep Reading
- Best Private Notes Apps for Windows: the five apps that pass the who-holds-the-keys test
- Scrib Desktop Is Open Source: the full encryption design, with the source
- Notes App Encryption at Rest: what encryption protects and what it does not
- Is OneNote Safe?: why the default Microsoft answer is not the private one
Scrib Desktop for Windows
The encrypted notepad Windows never shipped. Free, open source, portable. AES-256 with one keyboard shortcut.
Download for Windows →Also on Android: Scrib, free on Google Play.