Privacy & Security
Local browser utilities for password checks, checksum validation, browser details and security-policy generation. 15 tools are currently live in this section.
Password Strength Checker
Assess password length and character variety locally without sending the password anywhere.
Open tool →Password Entropy Calculator
Estimate password entropy from length and observed character-set size without uploading the password.
Open tool →Browser Information Checker
Display browser user-agent, language, platform, cookie support and online status reported to this page.
Open tool →Screen Resolution Checker
Show current screen resolution, available screen size and viewport dimensions.
Open tool →Device Pixel Ratio Checker
Show the browser devicePixelRatio value used for CSS and physical pixel scaling.
Open tool →User Agent Parser
Parse a pasted user-agent string into common browser, operating-system and device clues locally.
Open tool →Cookie Header Parser
Parse a Cookie header into name/value pairs locally in your browser.
Open tool →CSP Policy Builder
Build a basic Content-Security-Policy header from common source controls.
Open tool →Referrer Policy Generator
Generate a Referrer-Policy HTTP header from a standard policy option.
Open tool →Permissions Policy Generator
Generate a Permissions-Policy header for camera, microphone and geolocation controls.
Open tool →Security Headers Generator
Generate a practical starter set of HTTP security headers for a web application.
Open tool →URL Syntax Safety Checker
Inspect URL syntax, protocol, username/password use and suspicious formatting locally; this is not a reputation scan.
Open tool →Email Syntax Checker
Check whether an email address has a plausible RFC-style syntax without contacting the mailbox.
Open tool →Luhn Number Checker
Validate a number with the Luhn checksum algorithm locally; no number is transmitted or stored.
Open tool →IBAN Checksum Validator
Validate the MOD-97 checksum of an IBAN-format string locally without contacting a bank.
Open tool →About Privacy & Security
Local browser utilities for password checks, checksum validation, browser details and security-policy generation. MediaZuno groups closely related utilities together so you can move between tasks without hunting across different websites.