Securely encrypt and decrypt your files directly in your browser.
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A file encryptor and decryptor is essential for protecting sensitive documents, personal data, and confidential files. Our free online file encryptor lets you encrypt files with a password using AES-256-GCM encryption — the same standard used by governments and security agencies worldwide. Whether you're protecting financial records, securing personal documents, sharing confidential work files, or safeguarding private information during transfer, this tool makes file encryption fast and completely free.
Processing happens entirely in your browser using the Web Crypto API. Your files and passwords never leave your device — they are not uploaded to any server, not stored in the cloud, and not accessible to anyone but you. The tool supports both single file and batch encryption (multiple files are zipped before encryption). Decryption automatically extracts the original filename and returns your file in its original format.
The encryption process uses PBKDF2 key derivation with 100,000 iterations of SHA-256, combined with a random 16-byte salt and 12-byte IV, producing AES-256-GCM encrypted output. The encrypted file includes the salt, IV, original filename, and encrypted content in a single binary format with a .encrypted extension. Decryption reverses this process automatically.
From security-conscious professionals and students to businesses protecting proprietary data, content creators securing original work, and everyday users safeguarding personal files — anyone who needs to encrypt a file online with strong security will benefit. No registration, no server uploads, no limits.
Tip: Use a password of at least 12 characters with a mix of uppercase, lowercase, numbers, and symbols. Store your password in a password manager — if you lose it, your files cannot be recovered by anyone, including us.
Encrypts files with a password using AES-256-GCM encryption. Encrypted files can only be decrypted with the correct password, keeping your data secure.
Yes, completely free with no limits, subscriptions, or hidden fees. Encrypt and decrypt unlimited files.
No. Encrypt and decrypt files instantly without any account or personal information.
Yes. Processing happens entirely in your browser using the Web Crypto API. Your files and password never leave your device. No server upload occurs.
AES-256-GCM (Advanced Encryption Standard 256-bit) with PBKDF2 key derivation using SHA-256 and 100,000 iterations for strong password-based key generation.
Any file type — documents, images, videos, archives, PDFs. The tool accepts all file formats through the browser's file input.
Yes, select multiple files. They are zipped together before encryption, producing a single .encrypted file.
Encrypted files have a .encrypted extension and contain the salt, IV, original filename, and encrypted data in a binary format.
Browser memory limits apply since processing is local. For best performance, keep files under 500MB on devices with 8GB+ RAM.
Chrome, Firefox, Safari, Edge, and Opera. Requires Web Crypto API support (all modern browsers).
Yes, fully responsive for smartphones and tablets.
Your password cannot be recovered. AES-256-GCM encryption is designed to be unbreakable without the correct password. Always store your password securely.
Protecting sensitive files is critical. Whether it's financial documents, personal records, or confidential work files, unencrypted data is vulnerable to unauthorized access, data breaches, and theft. Our free online file encryptor solves this with browser-based AES-256-GCM encryption — your files stay on your device.
A tool that scrambles your files using a password-based encryption key. Only someone with the correct password can decrypt and access the original content. Uses military-grade AES-256-GCM encryption.
No installation, works on any device, 100% browser-based (no server uploads), strong encryption without technical expertise, completely free.
Protect your files with military-grade encryption — entirely in your browser. AES-256-GCM, zero server uploads, unlimited usage. No registration, no costs — just secure file encryption. Try it now.