CreativeFour LLC

Search arXiv by keywords, category, author, or date and get clean paper metadata: title, abstract, authors, categories, DOI, and PDF link. Schedule it with 'new papers only' for a daily research feed. Uses arXiv's official API; no key needed.

Crawl your whole website and find every broken link, redirecting link, and dead external link, with the exact page and link text where each one appears, so you know what to fix.

Run real Google Lighthouse on hundreds of pages or a whole sitemap, on mobile and desktop. Get performance, accessibility, SEO scores and Core Web Vitals (LCP, CLS, TBT) with pass/fail budgets. No API key needed.

Check npm and PyPI packages, or a whole package.json or requirements.txt, for known vulnerabilities (CVEs from OSV.dev), the safe version to upgrade to, deprecated or yanked releases, outdated versions, license, and popularity. No API key needed.

Get SEC filings (10-K, 10-Q, 8-K, Form 4, S-1 and more) for any US public company by ticker, with direct document links, plain-English 8-K items, optional key financials, and a new-filings-only mode for alerts. Uses SEC's official JSON API, not HTML scraping.

Get every URL from a website's sitemaps: just enter the domain. Handles sitemap indexes and .xml.gz, adds lastmod, images, hreflang and news data, filters by date or URL pattern, and reports sitemap problems.

Check thousands of URLs for status codes, redirect chains, loops, and broken links. Expand sitemaps automatically, and validate a site-migration redirect map: does every old URL land on its new URL?