🧰 cURL Command Parser

Batch-aggregate IPv4 / IPv6 CIDRs, IP ranges, and single IPs locally in your browser. Auto-buckets v4/v6, merges adjacent and containing blocks into the minimum CIDR list. Supports set subtraction (A − B), 8 export formats (CIDR / range / netmask / wildcard / CSV / JSON / nginx / iptables), line-level error diagnostics, and normalization warnings. Accepts flexible delimiters including newline, comma, full-width, space, tab, and semicolon.

Parse a single IPv4 CIDR locally in your browser and compute the normalized subnet, mask, wildcard mask, network, broadcast, and usable endpoint range.

Look up 140+ common network ports with category and protocol filters, security risk annotations, and one-click copy

Parse cron expressions into human readable schedules to reduce timer configuration errors.

Convert between geohashes and coordinates locally in your browser with smart detection, precision 1-12, bbox details, neighbour cells, parent prefixes, GeoJSON/WKT output, and batch conversion.