Dev utilities

Color Converter Convert colors between HEX, RGB, HSL, HWB and OKLCH, pick one visually and check the WCAG 2 contrast ratio (AA and AAA) of a text and background pair. chmod Calculator Tick Unix file permissions and get the chmod octal (755), the symbolic form (rwxr-xr-x) and the command, with setuid, setgid, sticky bit and umask support. Cron Expression Explainer Paste a cron expression and read what it means in plain English or Spanish, see its next 10 run times in any time zone, and get the Laravel schedule method. Regex Tester Test JavaScript regular expressions live: flags, highlighted matches, capture and named groups and a replace preview. Runs in a worker with a timeout. Case Converter Convert text to camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, Title Case, Sentence case or a URL slug with accents removed. Character & Word Counter Count characters (emoji-aware), words, sentences, lines and paragraphs, see the size in UTF-8 and UTF-16 bytes and get the reading and speaking time of any text. URL Parser Split a URL into scheme, credentials, host, port, path, query parameters and fragment, edit any part or parameter, and copy the rebuilt URL. Runs in your browser. User Agent Parser Parse any user-agent string into browser, engine, operating system, device and CPU, see your own user agent and the UA Client Hints your browser exposes. CIDR / Subnet Calculator Calculate network, broadcast, first and last host, host count, netmask and wildcard for IPv4 and IPv6 CIDR blocks, split them into subnets and check if an IP is in range. Semver Tool Compare two semantic versions, test a version against an npm or Composer range (^, ~, >=, ||) and sort a list of versions the way semver orders them.