Privacy and Security Tools
Evaluate password strength, encrypt and decrypt text, calculate IP subnets, scrub image metadata, and compute hashes.
Tools in Privacy and Security Tools (40)
Alphabetical & PopularPDF Metadata Viewer
Inspect author, title, creation date, modification date, creator software, and PDF version.
PDF Unlocker for Files You Own
Remove owner passwords and printing/editing restrictions from PDF files you have permissions for.
PDF Password Protector
Protect confidential PDF files with strong password encryption.
Image Blur Tool
Apply Gaussian blur to entire photos or blur sensitive regions such as faces, license plates, and names.
Image Pixelator
Pixelate images or censor sensitive areas with retro 8-bit or privacy mosaic blocks.
Image Metadata Viewer
View file metadata including MIME type, file size, color depth, format, and embedded tags.
EXIF Data Viewer
Read camera model, shutter speed, ISO, aperture, lens, GPS coordinates, and timestamp from photo EXIF tags.
File Hash Generator
Calculate cryptographic SHA-256, SHA-1, SHA-512, and MD5 hashes for any local file to verify integrity.
Base64 Encoder
Encode text strings and binary content into standard RFC 4648 Base64 strings with UTF-8 support.
Base64 Decoder
Decode Base64 encoded strings back into clean UTF-8 text with error checking.
JWT Decoder
Decode JSON Web Tokens (JWT) to inspect Header, Payload claims, expiration time, and signature format.
UUID Generator
Generate RFC 4122 compliant Version 4 (random) and Version 1 (time-based) UUID identifiers in bulk.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512, and MD5 hashes simultaneously from any input text.
MD5 Generator
Calculate 128-bit MD5 checksum hashes from text for legacy compatibility and checksums.
SHA-256 Hash Generator
Generate secure 256-bit SHA-256 cryptographic hashes with client-side Web Crypto API.
Password Generator
Generate strong, cryptographically secure passwords and passphrases with custom rules.
QR Code Reader
Scan and decode QR codes from uploaded images, screenshots, or camera streams directly in browser.
Strong Password Checker
Test password strength, entropy bits, brute-force cracking resistance, and vulnerability against common leaks.
SSL Certificate Checker
Verify SSL/TLS certificate validity, issuer authority, expiration date, and HTTPS security configuration.
DNS Lookup Tool
Query authoritative DNS records: A, AAAA, CNAME, MX, TXT, NS, and SOA via secure DNS-over-HTTPS (DoH).
WHOIS Lookup Tool
Look up domain registrar, creation date, expiration date, name servers, and domain ownership status.
IP Address Lookup
Inspect public IPv4 and IPv6 geolocation: country, city, ISP organization, and autonomous system number (ASN).
Password Strength Checker
Test password strength, entropy bits, brute-force cracking resistance, and vulnerability against common leaks.
Passphrase Generator
Generate memorable, ultra-secure multi-word passphrases using the Diceware random wordlist method.
Text Encryption Tool
Encrypt sensitive text messages and passwords locally using military-grade AES-256-GCM encryption with a secret key.
Text Decryption Tool
Decrypt AES-256-GCM encrypted ciphertext back into plain readable text using your shared secret passphrase.
File Hash Checker
Verify downloaded file integrity by comparing computed SHA-256 or MD5 hashes against published checksums.
SHA-256 Checksum Generator
Generate standardized 64-character SHA-256 hash checksums for files and security credentials.
Secure Random Number Generator
Generate cryptographically secure pseudo-random numbers (CSPRNG) using window.crypto for tokens and cryptography.
URL Safety Format Checker
Analyze URL links for suspicious phishing patterns, punycode spoofing, IP obfuscation, and dangerous open redirects.
Email Syntax Validator
Validate email address syntax against RFC 5322 specifications, checking domain format, local part, and disposable email providers.
IP Address Validator
Validate IPv4 and IPv6 address syntax, check for private/bogon ranges (RFC 1918), loopback, and multicast addresses.
Subnet Calculator
Calculate IPv4 subnet masks, CIDR prefix notation (/24, /16), network address, broadcast address, and usable host ranges.
IPv4 to IPv6 Reference Converter
Convert IPv4 addresses to IPv6 mapped (::ffff:x.x.x.x) and 6to4 prefix notation.
Certificate Expiration Checker
Check TLS/SSL certificate expiration dates and receive warning indicators for upcoming renewals.
DNS Record Lookup
Query security DNS records: SPF, DKIM, DMARC, CAA, and DNSSEC to audit email deliverability and domain spoofing protections.
HTTP Header Checker
Audit security response headers: Content-Security-Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, and CORS.
Data Redaction Tool
Automatically detect and redact Social Security Numbers (SSN), Credit Cards, emails, and phone numbers from text.
Metadata Removal Tool for Images
Strip all hidden metadata, GPS location coordinates, and camera timestamps from image files before sharing online.
EXIF Data Remover
Remove EXIF tags (shutter speed, camera model, date taken, serial number, GPS) from JPG and PNG photos.
About Privacy and Security Tools on TTech
Are these tools private and secure?
Yes. All privacy and security tools are engineered to execute calculations and processing within your local web browser, protecting your privacy and confidential data.
Can I use these tools on mobile devices?
Every tool is responsive and optimized for mobile screens, tablets, laptops, and desktop computers.