Your files stay on your device

# Regex and cron tools

Regex, cron, semver, and glob: paste, run, see the answer. Computed entirely in your browser.

4 tools

- [Regex tester

Test a regular expression against your own text with the browser's own engine, in a disposable worker.
](/dev/regex-tester)
- [Cron explainer

Explain a cron schedule in plain English and list its next fire times, dialect and timezone explicit.
](/dev/cron)
- [Semver compare

Sort versions, compare two, and match ranges. Strict SemVer 2.0.0, with coercion shown separately.
](/dev/semver)
- [Glob tester

Test glob patterns against a list of paths with picomatch in a bounded worker, dialect explicit.
](/dev/glob-tester)

Your files are processed on your device. The few tools that talk to the internet say so before they do.

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Canonical HTML: https://nutter.tools/dev/
Markdown version: https://nutter.tools/dev/index.md
Plain-text version: https://nutter.tools/dev/index.txt
Agent index: https://nutter.tools/llms.txt