Security

Generate an RSA key pair (2048/3072/4096-bit) as PEM-encoded public and private keys. Optionally encrypt the private key with a passphrase. PKCS#8 (recommended) or PKCS#1 private key format. Everything runs locally.

Validation

Validate 9-digit US ABA bank routing numbers (RTN) with MICR check-digit verification, Federal Reserve district lookup and ABA institution breakdown.

Validation

Validate 7-character UK/Irish SEDOL securities identifiers with weighted mod-10 check-digit verification and SEDOL-7 structure breakdown.

Text Processing

Fetch an RSS or Atom feed by URL (or paste raw XML), parse it, sort items by publish date, deduplicate, apply a time window, and output a clean Markdown summary

AI Tools

Rewrite weak resume bullets into achievement-driven STAR bullets (Situation/Task/Action/Result) with strong verbs and quantified results, plus before/after STAR scores and readability diagnostics

Health

Calculate cumulative sleep debt across the last 7 to 14 nights and generate a gradual recovery plan

Development

Preview Google SERP (pixel-accurate desktop & mobile truncation), X (Twitter) Card, and OpenGraph card side by side, with pre-launch SEO diagnostics

Development

Parse EXPLAIN / EXPLAIN ANALYZE output (PostgreSQL/MySQL/SQLite) into a cost tree, flag estimated-vs-actual row divergence, and suggest indexes

Health

Convert swim benchmark times into 25m, 50m, and 100m pacing and generate CSS-style threshold intervals

Health

Estimate BMR, TDEE, ideal weight, and macro splits for weight loss, maintenance, or muscle gain

Text Processing

Compare resume text against a job description, normalize keyword variants, and highlight coverage gaps

Validation

Lint robots.txt syntax, flag risky rules, and test important URLs before you ship crawler directives