セキュリティ＆プライバシー
Generate high-entropy passwords, evaluate password strength, create fake test data, validate credit cards with Luhn, and obfuscate emails.
Strong Password Generator
Generate strong, cryptographic, high-entropy passwords using client-side Web Crypto API algorithms.
Password Strength Checker
Evaluate password entropy, estimated cracking time, character diversity, and security vulnerabilities locally.
Fake Data Generator
Generate mock US test profiles, names, addresses, phone numbers, and emails for privacy testing and QA.
Credit Card Validator
Validate test credit card numbers using the Luhn checksum algorithm and detect card issuer networks.
Email Obfuscator
Protect email addresses from spambots and scrapers by encoding them into HTML entities and JS decoders.
Explore Other Categories
Image Tools
Compress PNG/JPEG/WebP images, resize photos, generate color palettes, and optimize SVGs.
SEO Tools
Generate meta tags, robots.txt, XML sitemaps, inspect keyword density, preview SERPs, and build Open Graph tags.
Developer Tools
Format JSON, minify code, encode Base64 and URLs, generate hashes, UUIDs, and convert color codes.
File Converters
Convert CSV to JSON, XML to JSON, Markdown to HTML, Excel to HTML tables, and CSV to Excel spreadsheets.