Site Galaxy

Your website has a shape. Have you ever seen it?

Every website is secretly a graph, hundreds of pages tied together by thousands of internal links. That structure decides more than most owners realise. It decides whether a visitor can get anywhere in three clicks, whether search engines can find every page you publish, and where your site quietly rots, the broken links, the redirect chains, the pages nobody can reach at all.

Site Galaxy makes that invisible structure visible. Enter a domain and it crawls the site live, breadth-first from the homepage, drawing each page as a glowing star the moment it is fetched. Pages that link to each other are joined by luminous strands. Pages with many inbound links grow into bright hubs. The homepage sits at the centre of it all like a sun, and the deeper a page is buried, the further out its shell. Thirty seconds later you are orbiting a constellation that is uniquely, recognisably yours.

The colours are the audit

The galaxy is not just pretty, every colour is a finding.

• Green stars are healthy pages returning 200s.
• Amber stars are internal links that hit a redirect first. Each one wastes a hop and leaks a little authority. The strand shows where it lands.
• Red stars pulse. They are broken pages, 4xx or 5xx, that your own site links to.
• Grey stars answered like a bot-blocker rather than a page, so they were counted but not judged.
• Violet stars drift outside the galaxy entirely. They are orphans, pages your sitemap says exist but that no internal link ever reaches. Visitors will never find them and crawlers rarely bother. They are the single most common structural problem we see, and on most sites nobody has ever noticed them.

Hover any star to identify it. Click it for the detail panel, its title, status, depth, inbound and outbound link counts, plus one-click jumps into SEO Analyzer, Meta Inspector, Redirect Tracer or Link Checker for that exact URL. Use the legend chips to hide or show any class of page, which is the fastest way to see, say, only your problems.

The report card underneath

When the crawl settles, Site Galaxy grades what it found, using the same score-out-of-100 and A to F scale as every graded Nitro Sites tool. Five weighted checks make up the architecture score, page health, crawl depth, orphan pages, redirect hygiene and titles, each shown as its own bar so you can see exactly where the points went. Below that, a prioritised fix list turns the picture into a to-do list, fix these broken pages, link to these orphans, flatten this depth, update these redirecting links.

Because the crawl and the visual come from the same data, nothing in the galaxy is decoration. If your galaxy looks like a tight, bright web with a clean halo, your structure is genuinely good. If it looks like a comet with a long violet tail, you have a sitemap full of pages your own site never mentions, and now you know.

Built for sharing

No two sites produce the same galaxy. A ten-page brochure site settles into a neat little flower. A blog with years of archives becomes a spiral with deep arms. An e-commerce site grows dense clusters around its category hubs. The result URL is shareable and re-runs the crawl live, so you can send your developer, your client or your team straight to the shape of the problem rather than a spreadsheet describing it.

For AI agents

This tool exposes a plain-text endpoint designed for language models and agents:

GET https://nitrosites.com/tools/site-galaxy/scan.php?url=<target>&format=agent

It runs a bounded server-side sample crawl (12 pages plus the sitemap) and returns a token-cheap digest of the same analysis, the architecture score and grade, page counts by status, orphan candidates and a prioritised issue list. Soft rate limits apply; results are cached briefly. No key or login required.

Frequently asked questions

What is Site Galaxy?

It is a website structure visualizer. It crawls one site the way a search engine does, following internal links page by page, then draws the result as an interactive 3D map. Pages are stars, links are strands, and colour tells you health at a glance. Under the visual there is a proper audit, a score out of 100 and an A to F grade for the site's architecture.

What is an orphan page and why should I care?

An orphan page is a page listed in your sitemap that no other page on your site links to. Visitors can never stumble onto it, internal authority never flows to it, and search engines treat it as a dead end. Site Galaxy shows orphans as violet stars drifting outside the main galaxy, which makes them impossible to ignore. Fixing them is usually one internal link away.

How many pages does it crawl?

Up to 180 pages of a single site, breadth-first from the address you enter, plus your sitemap for the orphan check. Very large sites get an honest sampled result, and the score card says so. The crawl runs live, so you can watch the galaxy grow wave by wave and stop it at any time.

What does the architecture score measure?

Five things, weighted. Page health (are internally-linked pages returning errors), crawl depth (is everything within three clicks of home), orphan pages (sitemap URLs nothing links to), redirect hygiene (internal links that bounce through redirects), and titles (missing or duplicated). It uses the same A to F scale as every graded Nitro Sites tool, 90 plus is an A, below 45 is an F.

Is it safe to run on my website?

Yes. The crawl is passive and read-only, it fetches pages exactly like a browser or a search crawler would, never logs in, never submits forms and never changes anything. It only crawls the one site you enter, and it politely identifies itself in its user agent.

Do I need an account?

No. Like every Nitro Sites tool it is free, with no signup and no login. Soft rate limits keep it fair, and the result link is shareable, so you can send a colleague straight to your site's galaxy.