Developer Tools
9
Essential developer utilities: JSON formatter and diff, regex tester, Git cheatsheet, cron expression tools, chmod calculator, and code comparison.
JSON formatter
Format, validate, and minify JSON data
JSON diff
Compare two JSON objects and highlight differences
Git cheatsheet
Quick reference for Git commands and workflows
Crontab generator
Generate and explain cron expressions
Regex tester
Test regular expressions with real-time match highlighting, group capture display, and flag toggles
Chmod calculator
Calculate Unix file permissions between octal notation and symbolic rwx format
Cron explainer
Paste a cron expression and get a human-readable description plus next 5 run times
Luhn / card validator
Validate credit card numbers with the Luhn algorithm and detect card type
Diff viewer
Side-by-side text diff with line-level highlighting powered by LCS algorithm