App category
Website, SEO, and performance
Check the parts of a public website that affect discovery, delivery, and day-to-day reliability. These apps inspect live pages, links, feeds, metadata, mobile behavior, privacy exposure, and performance with focused results for each job.
Choose an app when
- For page-wide diagnostics, Site SEO Check covers search signals, Website Speed Test covers Lighthouse performance, Mobile Site Check covers mobile rendering, and Webpage HTML Check covers markup rules.
- For link or locale integrity, Broken Link Check follows one page's links and images; Multilingual Site Check covers hreflang, canonicals, redirects, and sitemaps across locales.
- For a published feed or manifest, use Podcast Feed Check, Product Feed Check, Ads.txt Check, Product Link Resolver Check, Web App Manifest Check, or Fediverse Actor Check.
Ads.txt Check
2 tools
Validate ads.txt and cross-check sellers.json in chat
Broken Link Check
1 tool
Checks up to 100 unique link and image targets on a page and tells real 404s from rate limits
Fediverse Actor Check
2 tools
Resolve a @user@host handle through WebFinger to its ActivityPub actor and check the negotiated discovery chain in chat
Mobile Site Check
1 tool
Renders your page in headless Chrome on four real device profiles and grades viewport scaling, sideways overflow, tap targets under 44px, and illegible text
Multilingual Site Check
2 tools
Check locale pages and hreflang in chat
Podcast Feed Check
3 tools
Check a public podcast RSS feed's required metadata, measured artwork dimensions, enclosure byte-range delivery, and a sampled media probe, or debug one episode URL
Product Feed Check
2 tools
Check a public Google Merchant product feed's format, required fields, GTIN and MPN identifiers, variant groups, price and availability values, and a live sample of its product and image URLs
Product Link Resolver Check
2 tools
Check a product 2D-barcode resolver before you ship it
Web App Manifest Check
2 tools
Check selected core web app manifest members and Chrome's documented installability fields, with declared icons fetched and decoded for reachability and true pixel size
Site SEO Check
1 tool
Lighthouse SEO audit and a 13-point discoverability checklist for any public URL
Webpage HTML Check
1 tool
The W3C-aligned html-validate recommended ruleset, seven style and SEO rules disabled and listed, run over any live page's markup
Website Speed Test
2 tools
Real headless-Chrome Lighthouse speed tests: scores, lab performance metrics, ranked fixes