Regex Tester & Validator

This multiline regex matches numeric strings and splits them into named capture groups so useless zeroes can be removed during replacement. It captures an optional negative sign (negative), a leading zero (preceding), the core digits with an optional decimal point (main), and trailing zeroes with an optional dot (trailing). Ideal for normalizing decimals, e.g. turning '-0.500' into '-.5' or '1.20' into '1.2' by keeping only the negative and main groups.