Crawlable: JS SEO Check

Can Google read your page without JavaScript? Search engines read the HTML your server sends first, and run JavaScript later, if at all. Many AI crawlers do not run JavaScript at all. If your title, H1, canonical or meta robots only appear after JavaScript runs, they may be missed or misread. Crawlable shows you, in one click, which SEO tags depend on JavaScript. What you get - A plain verdict at the top that tells you whether your key SEO tags are in the server HTML. - A checklist of the key tags (title, meta description, canonical, meta robots, H1) with the server value and the after-JavaScript value side by side, and a clear status: same, changed, added or removed by JavaScript. - Other checks: language, hreflang, Open Graph, structured data, viewport, link counts and images without alt text. - A side-by-side comparison of the server HTML and the rendered HTML, with a filter that hides scripts, styles and other noise so you see real changes. - A source viewer with search and copy. - A printable report preview in English or Spanish. - Light and dark themes, and a keyboard shortcut (Alt+Shift+R). Who it is for SEO specialists and web developers who build or audit websites that rely on JavaScript. Privacy Everything runs in your browser. Crawlable has no servers, no accounts, no analytics and loads no remote code. The only network request is a re-fetch of the page you are inspecting. It only accesses a page when you click the icon. Coming soon Client-ready PDF reports with your own logo, CSV export, in English and Spanish. Limits The server HTML is a fresh request from your browser, so it can differ from what search engines receive. Browser-internal pages cannot be inspected.