Free Authority Flow Checker vs Sitebulb
Sitebulb is excellent at surfacing technical issues and visualizing structure on the desktop. RankForge is narrower and more prescriptive: it models authority flow and outputs the exact internal links to add, with anchor text and placement, in a client-ready brief — no install required.
If the job in front of you is authority flow checker, you can run that check here for free in a couple of minutes with no account. Whether you also need Sitebulb depends on what else you do in a week — which is what the rest of this page is about.
What the free authority flow checker checks
- How concentrated your internal authority is (top pages vs. the rest)
- Your strongest pages and your most starved important pages
- Structural bottlenecks that keep authority from reaching deep content
Where Sitebulb is genuinely better
These are real advantages. If any of them describe your week, Sitebulb is worth paying for and this free check is not a replacement.
- Very deep technical audit with a large, configurable check list
- Powerful desktop crawling and structure visualizations
- Detailed hint-based explanations for technical issues
Which one do you actually need?
Use the free authority flow checker
You want internal-link recommendations you can act on or hand off, without installing desktop software.
Use Sitebulb
You need an exhaustive desktop technical audit with maximum crawl configurability.
Sitebulb capabilities change — verify current features on their site.