Tag

validation

15 tools with this tag

Analyze password security with entropy and complexity scoring.

Validate syntax, catch errors, and auto-indent complex JSON payloads.

Check if a year is a leap year and find out when the next ones are.

Fetch or paste a robots.txt file and validate the core crawler directives.

Audit, validate, and alphabetically sort your environment variables safely.

Quickly scan for standard and notorious spelling mistakes.

Check color contrast ratios for WCAG accessibility compliance.

Bulk-check live URLs for 200, 301, 404, 500, and other status codes.

Visually simulate your Google search snippet truncation limits.

Inspect live canonical tags, final URLs, and metadata alignment in one pass.

Validate JSON-LD schema markup syntax and catch common field issues before publishing.

Validate sitemap.xml files, detect duplicates, and surface structural issues fast.

Parse campaign URLs and catch missing or messy UTM parameters before launch.

Check SSL certificate details for any domain — issuer, expiry date, and days remaining.

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes for any file. Compare against a known hash to verify integrity.