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Encrypt a file with a password — without uploading it

Password-protect any file with AES-256-GCM, right here in your browser. The file never leaves your device — everything runs offline.

There is no password recovery. If you lose the passphrase, the encrypted file cannot be opened — by you or by anyone. There is no backdoor, no reset link, and no way to recover the data. Store your passphrase safely before you encrypt anything.

Mode

Click to choose a file, or drop it here
Any file type — documents, photos, archives, anything

How it works

The passphrase is stretched with PBKDF2 (600,000 iterations of SHA-256, with a random salt) into a 256-bit key. The file is then encrypted with AES-256-GCM, an authenticated cipher: if the passphrase is wrong, decryption fails cleanly with a message instead of producing garbage. A fresh random salt and IV are used for every encryption.

The output is a single .enc file (magic header + salt + IV + ciphertext). To decrypt it later, switch to Decrypt, pick the .enc file, and enter the same passphrase — you get back the original file, byte for byte.

All crypto runs in your browser via the Web Crypto API. Nothing is uploaded, and this page works fully offline.

What is this page?

This is the real File Encryptor — the same tool Untracked sells as a download — running free, right here in your browser. Your files are processed entirely on your own device: nothing is uploaded, no account is needed, and the page makes no network requests after it loads. You can verify that yourself: load the page, open your browser's network inspector, or even disconnect from the internet and keep using it.

Free page vs. the €9 download

Questions people ask

Does my file get uploaded anywhere?

No. Encryption happens inside this page using your browser's own cryptographic engine (WebCrypto). There is no server, no account, no network calls after the page loads — disconnect from the internet and encrypting still works.

How strong is the encryption?

AES-256-GCM with a key derived from your passphrase (PBKDF2, 600,000 iterations). This is the same standard used by banks and disk-encryption software. A long, unique passphrase is what makes it strong.

What if I lose the password?

The file stays encrypted forever — there is deliberately no recovery path, no backdoor, no reset-password link. That's what real encryption means. Keep the password somewhere safe before you encrypt.

Can the encrypted file be emailed or stored anywhere?

Yes — the .enc file is safe to email, share or back up. Only someone with the passphrase can open it, and nobody else can read the contents.

What's the difference between this free page and the paid download?

This page encrypts unlimited single files, one at a time, and lives on this website. The €9 download adds batch encryption of folders and the same tool as a single file — no limits, offline forever, on any computer.

More free tools

Document Metadata Scrubber
Clear hidden author and edit history from PDF/Word/Excel/PPT. Free, unlimited single files.
QR Code Generator
Any link or text to QR — PNG and SVG. Free: unlimited, zero tracking.

All free tools →  ·  Untracked — buy-once software

Untracked builds single-file tools: no installation, no account, no cloud, no subscription — and no tracking on this page either. The only thing stored is your own use count, in your browser.