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Developer Tools
Generate identifiers, decode and create JWTs, test regular expressions, convert timestamps, generate and check passwords, validate UUIDs, explain HTTP and MIME references, work with cron schedules, create slugs, and convert colors directly in your browser. Developer Tools are built for private, mobile-first engineering workflows.
Generate random UUID v4 values locally in your browser for tests, records, and developer workflows.
Validate UUID strings, detect versions, and identify invalid or nil UUID values.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text directly in your browser.
Decode JWT headers and payloads locally in your browser and inspect common claims.
Generate HS256 JSON Web Tokens from custom header and payload JSON for development workflows.
Test regular expressions, inspect matches, capture groups, positions, and replacement previews locally.
Convert dates to Unix timestamps and Unix timestamps to readable local and UTC dates.
Convert Unix epoch seconds or milliseconds into ISO, UTC, and local date formats.
Generate strong random passwords locally with length, character, and ambiguity controls.
Check password strength locally with entropy, length, variety, weakness hints, and improvement suggestions.
Search HTTP status codes by number, phrase, or category with explanations and common usage notes.
Look up common file extensions and MIME types with categories, examples, and practical usage notes.
Parse 5-field cron expressions, explain each field, validate syntax, and preview upcoming run examples.
Generate 5-field cron expressions from common schedule presets or custom basic fields.
Generate URL-friendly slugs with lowercase, accent removal, custom separators, cleanup, and live preview controls.
Write, open, and preview GitHub Flavored Markdown locally with polished Wiki-style rendering and safe Markdown or HTML downloads.
Convert colors between HEX, RGB, RGBA, HSL, HSLA, HSV, and CMYK with live preview and copy-ready formats.
Use Developer Tools to generate and validate UUIDs, create hashes, decode and generate JWTs, test regular expressions, convert timestamps, check HTTP statuses, look up MIME types, parse and generate cron schedules, create URL slugs, convert colors, and work with password generation or strength checks in the browser.
Each completed tool includes page-level SEO metadata, structured data, FAQs, and related links through the shared developer tool shell so new tools can scale without duplicate page patterns.