Free tools

Free tools for website and cron checks

Quick one-off checks, free and without an account. If you want them to run continuously and alert you, Kaspar monitors it for you.

Broken link checker

Checks every link on a page and shows which ones are broken or redirect.

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SSL checker

Shows issuer, validity, remaining days, host names, chain trust and TLS version of a certificate.

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Cron expression explainer

Explains a cron expression in plain language and lists the next run times.

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