Redmoon Converters Test any regex live with match highlighting and a plain-English breakdown of each token. Common pattern library (email, URL, IPv4, phone) and shareable links.
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Matching uses the native JavaScript RegExp engine. The explainer walks the pattern token-by-token: character classes (\\w \\d \\s), quantifiers (* + ? {n,m}), anchors (^ $ \\b), groups, alternation and common escapes.
Bad patterns are reported instead of crashing. Use the g flag to find all matches; i for case insensitive.
Cron Expression Builder & Translator
Build cron expressions visually and translate any cron string to plain English with the next 5 fire times.
Unix Timestamp Converter (with Timezone)
Bidirectional Unix timestamp ↔ human date converter with timezones, milliseconds and ISO 8601.
Bandwidth & Download Time Calculator (Mbps ↔ MB/s)
Convert Mbps to MB/s and calculate download time for any file size at any internet speed.