Free Privacy Tools
Small, focused tools that do their work in your browser - not on a server. No account, no ads, no trackers, no upload.
Encryption & encoding
Ciphers, encoders and hashes. Every one of them runs on your device.
AES Encryption
Encrypt any text with a passphrase using AES-256-GCM, and decrypt it back. Runs on your device with the browser's own crypto engine.
Encrypt some textSecret Note
Turn a note into a one-time link. It is encrypted before it leaves your browser and destroyed the moment it is read.
Create a secret noteCaesar Cipher
Shift letters by any amount from 1 to 25, or decode ROT13. Includes a brute-force view that shows all 25 shifts at once when you do not know the key.
Shift some lettersBase64 Decode
Decode Base64 back to readable text, or encode text into it. Handles UTF-8 and the URL-safe alphabet.
Decode Base64Hash Generator
Generate SHA-256, SHA-512, SHA-1 or MD5 hashes of any text, with a straight answer about which of them are still safe to rely on.
Generate a hashText utilities
Small jobs on a block of text - writing, tidying and reformatting.
Online Notepad
A rich text scratchpad that saves as you type - the same editor the Snoq app runs. Your text stays in your browser's own storage and is never sent anywhere.
Open the notepadCase Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case.
Convert some textRemove Line Breaks
Strip the hard line breaks out of text copied from a PDF or an email, while keeping the paragraphs intact.
Unwrap some textRemove Duplicate Lines
Remove repeated lines from a list, with optional sorting and a count of exactly what was taken out.
Deduplicate a listWhy these tools work differently
Most free web tools of this kind are advertising businesses. Your text is posted to a server, the page carries a stack of third-party trackers, and a consent banner appears because it has to.
These do the actual work in your browser, using the Web Crypto API and local browser storage. Nothing you type is transmitted. The one exception is the secret note, which does upload something - but it encrypts first, and keeps the key in the part of the link browsers never send to a server, so what arrives here is a blob we cannot open.
We build Snoq, an encrypted notes app for Windows, so this is the neighbourhood we already live in. The tools are free and have no upsell attached - use them and ignore the rest of the site if you like.
How every tool here runs
Check any of it in your browser's developer tools.
- Runs in
- Your browser
- Encryption
- Web Crypto API
- Your text, uploaded
- Never
- Account
- None
- Ads
- None
- Price
- Free
One exception, stated plainly: the secret note uploads its ciphertext, so the link has something to fetch. The key stays in the link and never reaches us.
Need something more permanent?
These tools are for quick jobs. Snoq is the desktop version of the same idea: a Windows notes app that keeps everything in an AES-256 encrypted database on your own disk, with Argon2id key derivation, no account, no cloud and no telemetry. It is free.
