Security & Encryption Tools
From password creation to encryption and checking suspicious links, protect yourself right in your browser.
QR Code Checker
Scan a QR code from an image or camera and preview the full URL, domain, and red flags before you open the link.
Invisible Character Checker
Scan text, URLs, and filenames for zero-width characters, RTL overrides, hidden Unicode tags, and homoglyphs.
Multiple File Encryptor
Encrypt multiple files into one password-protected .enc file with AES-256-GCM. Runs in your browser.
API Key & Secret Scanner
Scan code, logs, and .env files for API keys, tokens, and passwords, then mask them before you paste into an AI tool.
File Type & MIME Checker
Read a file's magic bytes to find its real format and catch fake or double extensions.
File Hash Checker
Compare two files or check a download against its SHA-256, SHA-1 or MD5 hash to catch corruption or tampering.
Homoglyph Detector
Find lookalike Cyrillic and Greek letters and hidden characters in text, URLs, and usernames.
TOTP Code Generator
Generate 2FA codes from a Base32 secret key, check a code against it, and make an otpauth QR code. Runs in your browser.
Encrypt & Decrypt Text Online
Encrypt and decrypt text with a passphrase using AES-256-GCM, right in your browser.
QR Code Checker
Scan a QR code from an image or camera and preview the full URL, domain, and red flags before you open the link.
Invisible Character Checker
Scan text, URLs, and filenames for zero-width characters, RTL overrides, hidden Unicode tags, and homoglyphs.
Multiple File Encryptor
Encrypt multiple files into one password-protected .enc file with AES-256-GCM. Runs in your browser.
API Key & Secret Scanner
Scan code, logs, and .env files for API keys, tokens, and passwords, then mask them before you paste into an AI tool.
File Type & MIME Checker
Read a file's magic bytes to find its real format and catch fake or double extensions.
File Hash Checker
Compare two files or check a download against its SHA-256, SHA-1 or MD5 hash to catch corruption or tampering.
Homoglyph Detector
Find lookalike Cyrillic and Greek letters and hidden characters in text, URLs, and usernames.
TOTP Code Generator
Generate 2FA codes from a Base32 secret key, check a code against it, and make an otpauth QR code. Runs in your browser.
Encrypt & Decrypt Text Online
Encrypt and decrypt text with a passphrase using AES-256-GCM, right in your browser.
Category Overview
What Security & Encryption tools can do for you
9 tools listed
The security and encryption tools help you protect accounts and data. Generate random passwords and passphrases, check password strength with an estimated crack time, and generate or verify TOTP two-factor codes.
To protect data, you can encrypt and decrypt text with AES-256-GCM using a passphrase, encrypt multiple files at once, create self-decrypting HTML files and split secrets so that several people must combine their shares. Encryption and decryption run in your browser.
To check suspicious items, preview what a QR code contains before opening it, look for warning signs in shortened URLs, detect look-alike characters and invisible characters, identify a file's real type, generate MD5 and SHA-256 hashes to verify downloads, and find API keys accidentally left in code or logs. Results are guides, not guarantees of safety.
Handy when you need to
- ✓ Create strong passwords and passphrases
- ✓ Verify a download with its hash
- ✓ Check a QR code or short link before opening it
- ✓ Find secrets left in code or logs
Pro tip
To remove personal information from photos and documents, see Privacy & Anonymization. If you forget a passphrase, encrypted data cannot be recovered, so store it safely.
Security & Encryption: frequently asked questions
- Q. Are generated passwords sent to a server?
- A. No. Passwords are generated and checked in your browser, and nothing is sent to or stored on a server.
- Q. Can I recover data if I forget the passphrase?
- A. No. The passphrase is only used in your browser and we keep no copy, so keep it somewhere safe.