Complete HTTP status code reference with descriptions. Includes 1xx, 2xx, 3xx, 4xx, 5xx categories. Searchable database.

Generate and validate cron expressions. Predefined presets and custom builder for task scheduling. Free online crontab generator for developers.

Convert between HTML entities and characters. Encode/decode special characters for web development with common entity reference table.

Encode or decode URLs and query parameters. Choose between encodeURI and encodeURIComponent. Free client-side tool for web development.

Convert Unix timestamps to dates and vice versa. Supports milliseconds and batch conversion. Free online tool.

Test and debug regular expressions with real-time matching. Supports all flags, groups, and match highlighting. Free online regex validator.