6 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Full website audit in one call: accessibility (WCAG 2.1 A/AA via axe-core), on-page SEO, HTTP security headers and page speed / page weight, from a single browser load of one URL. Cheaper than four separate calls; if any...
Email validation API. Checks whether a string is a syntactically valid email address using the same production-grade validation library trusted across the Node.js ecosystem, catching edge cases a quick regex misses. Retu...
Cron expression explained in plain English with the next run times in any time zone - validates a 5-field cron and handles DST
Ordinary least squares simple linear regression (y = slope*x + intercept) with R-squared.
Pearson correlation coefficient between two equal-length numeric series.
Nth percentile of a list of numbers (linear interpolation between closest ranks).