Free Tools Directory

Decode JSON Web Tokens securely in your browser with header/payload highlighting and expiration check.

SHA-256, SHA-512, and SHA-1 cryptographic hashing using browser SubtleCrypto API.

Cryptographic high-entropy passwords, API tokens, and secure passphrases.

Test password security privately. Calculates entropy bits, estimated crack time, and weakness flags.

Calculate IPv4 subnet masks, CIDR notation, network address, broadcast address, and host ranges.

Find your public IP address, ISP details, geographic location, and user-agent string.

Convert cURL commands to Python Requests, JavaScript Fetch, Axios, Go, and PHP code.

Lightweight, browser-based HTTP client. Send GET, POST, PUT, DELETE requests and inspect JSON responses.

Test, debug, and break down Regular Expressions (Regex) in real-time with regex match highlighting.

Paste an error message and get a deterministic diagnosis with likely causes and next steps. No AI, nothing sent to a server.

Searchable dictionary of HTTP status codes (1xx - 5xx) with troubleshooting guides and RFC standards.

Interactive Linux file permission calculator. Converts octal (755, 644) and symbolic permissions.

Translate crypted cron expressions into human-readable English with next run schedule preview.

Beautify, validate, format, sort keys, and minify JSON strings with real-time error syntax markers.

Format and indent messy SQL queries across PostgreSQL, MySQL, SQLite, and Transact-SQL.

Convert configuration files seamlessly between YAML and JSON with instant syntax validation.

Clean inline SVG code and convert to React JSX, TypeScript TSX, or Vue 3 components.

Convert UTF-8 text and binary to Base64 or Hex encoding and decode back in real-time.

Percent-encode and decode URIs with an interactive query-parameter key/value breakdown table.

Generate cryptographically secure UUID v4 (Random) and v7 (Time-Ordered) IDs in bulk.

Export code snippets into gorgeous dark-mode screenshots for presentation slides and LinkedIn.

Convert Unix epoch timestamps to human-readable dates, local time, and UTC standard.

Convert colors instantly between HEX, RGB, HSL, and CMYK format strings for web styling.

Browser-based calculator supporting trigonometric functions, logarithms, powers, and roots.

Calculate exact age in years, months, and days from any birth date, plus total days lived and days to your next birthday.

Find what percent X is of Y, calculate percentage increase/decrease, or find a value from a percentage.

Convert length, weight, temperature, and digital storage units (bytes to GB/TB) instantly.

Coordinate global team meeting hours across timezones with an interactive slider control.

Count words, characters, sentences, paragraphs, and reading time in real-time.

Convert text strings to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and Kebab-Case.

Compare two text files or code snippets to highlight line-by-line additions, deletions, and changes.

Generate optimized HTML meta tags for Google Search, Facebook Open Graph, and Twitter Cards.

Build valid robots.txt files to manage search engine crawler access and allow/block specific bots.

Generate structured XML sitemaps ready for Google Search Console submission.

Generate valid JSON-LD schema markup for Articles, FAQs, Organizations, and Products.