12 Services from cheap-utilities.x402tookit.com

Calculates the WCAG contrast ratio between two hex colors and returns AA/AAA pass/fail verdicts for normal text, large text, and UI components.

Compare two semantic version strings by precedence and/or test whether a version satisfies a semver range expression like ^1.2.0 or >=2 <3.

Computes SHA-256, SHA-1, SHA-512, and MD5 digests of a short text string, returning hex and base64 encodings along with byte length and base64 of the input.

Translates a 5-field cron expression into plain English and returns the next 5 scheduled run times in UTC.

Validates a UUID and returns its version (1–8), variant, and embedded timestamp for v1, v6, and v7 UUIDs

Repairs malformed JSON (trailing commas, single quotes, bare keys, comments, Python literals, missing brackets) and returns the parsed result

Normalizes a URL by lowercasing the host, removing default ports and fragments, sorting query parameters, and stripping known tracking parameters.

Analyzes English text and returns word count, sentence count, character count, reading time, Flesch readability scores, top words, and a difficulty verdict.

Validates email address syntax, detects role accounts (info@, admin@), and identifies known throwaway/disposable domains — no DNS lookup or message sending involved.

Computes a structural diff of two JSON documents, reporting added, removed, changed, and type-changed paths with array comparison by index.

Classifies an IPv4 or IPv6 address as public, private, loopback, link-local, CGNAT, or reserved, and returns its reverse-DNS hostname.

Converts a Unix timestamp or ISO datetime string into multiple representations: ISO 8601, local time in any IANA timezone, weekday, ISO week number, and relative time.