Development
Generate XML sitemaps for search engines with customizable options
sitemap-generatorDevelopment
Check SSL certificate information, validity, and security configuration
ssl-checkerDevelopment
Pixel-accurate Google SERP preview for desktop and mobile, light and dark: current truncation budgets, 2025+ URL line formats, review stars and product rich results, byline dates, meters and diagnostics.
serp-preview-simulatorDevelopment
Audit SPDX 2.3 or CycloneDX 1.5 component licenses and emit SARIF with failing dependency paths
sbom-spdx-cyclonedx-license-policy-auditorDevelopment
Preview Google SERP (pixel-accurate desktop & mobile truncation), X (Twitter) Card, and OpenGraph card side by side, with pre-launch SEO diagnostics
serp-social-preview-studioDevelopment
Complete reference guide for HTML void elements (self-closing tags), SVG elements, and MathML elements
self-closing-html-tagsDevelopment
Comprehensive SEO analysis and optimization recommendations for websites
seo-optimizationDevelopment
Analyze SQL queries for potential performance issues
sql-performance-analyzerDevelopment
Build simple SQL queries visually
sql-query-builderDevelopment
Audit a package.json for dependency hygiene, version-range quality, and optionally inspect a transitive dependency tree from package-lock.json or yarn.lock. Flags duplicates, wildcard or pre-release specs, unsorted keys, missing metadata, and misclassified runtime/dev dependencies.
package-json-dependency-auditorDevelopment
A searchable, localized cheat sheet for regular expression syntax — character classes, anchors, quantifiers, groups & references, lookarounds, escape sequences, and flags — with a built-in quick tester
regex-cheat-sheetDevelopment
Step through how a regular expression matches a string position by position: visualize match attempts, partial successes, backtracks, and captures — a learning tool for understanding regex behavior, not just the final result
regex-debugger