A search crawler can follow links, discover a page, and fetch its content.
<div class="map"><div class="node a">HOME</div><div class="node b">GUIDE</div><div class="node c">ARTICLE</div><div class="node d">ISLAND</div><div class="line l1"></div><div class="line l2"></div><div class="bot">●</div><div class="note">crawler path <span>→</span></div></div>.map{position:relative;width:min(90vw,530px);height:75%;font:800 clamp(10px,max(1.7vmin,1vw),14px) sans-serif;color:var(--fg)}.node{position:absolute;padding:clamp(7px,1.8vmin,14px);background:var(--surface);border:2px solid var(--line);border-radius:8px;z-index:2}.a{left:3%;top:16%}.b{left:38%;top:16%}.c{right:0;top:16%}.d{left:39%;bottom:4%;border-style:dashed;color:var(--muted)}.line{position:absolute;top:31%;height:3px;background:var(--accent);z-index:1}.l1{left:19%;width:24%}.l2{left:58%;width:23%}.bot{position:absolute;top:47%;left:6%;font-size:clamp(20px,4vmin,35px);color:var(--accent);animation:scan 4s ease-in-out infinite}.note{position:absolute;bottom:5%;left:3%;color:var(--muted);letter-spacing:.08em}.note span{color:var(--accent)}@keyframes scan{0%,12%{left:6%}38%{left:42%}68%,85%{left:82%}100%{left:6%}}@media(min-width:700px){body > :not(script){zoom:1.55}.map,.feed,.linkmap{height:48%}}Crawlability means a search crawler can reach and fetch a page. A useful article can remain undiscovered when it has no incoming link or the server blocks requests.
When publishing a page, check for a path of links from a known page. The demo sends a crawler through connected nodes and stops at a broken route. A successful fetch does not guarantee indexing or ranking.
Check link paths and server access when a new page is absent from search.