無料ウェブサイトランクチェッカー（2026年）：グローバルランキングの説明
無料ウェブサイトランクチェッカー - 任意のドメインのグローバルランクを5秒で取得します。さらに、2026年にウェブサイトランキングが実際にどのように機能するかについての科学と、それを誠実に読む方法。
What a "website rank" actually is
A website rank is a single integer between 1 and ~10,000,000 that estimates a domain's position in the global popularity / authority hierarchy of the entire web. Rank #1 is the most popular domain on the internet (google.com). Rank #1,000,000 is at the bottom of the recognizably-ranked web — beyond that, sites are mostly indistinguishable.
This is not Google PageRank (which Google killed publicly in 2016). It's not a Google SERP ranking position (those are per-keyword, not domain-level). It's a global authority/popularity ordering.
How website ranks are calculated in 2026
Modern rank calculations combine three signal families:
- Inbound link signals — how many unique domains link to this domain, weighted by THEIR rank
- Traffic signals — actual visitor data from panels (Similarweb) or first-party widgets (FeedPulse Rank for in-network sites)
- Authority decay — older inbound links lose weight over time; freshness matters
Alexa famously used only traffic data (their browser toolbar panel). OpenPageRank uses only the link graph. FeedPulse Rank combines first-party traffic data (for ~tens of thousands of in-network sites) with the link-graph fallback for everyone else — giving real-time precision when we have direct data and reasonable estimates elsewhere.
Use our free rank checker
FeedPulse Rank checker gives you:
- Global rank for any domain
- Percentile ("top 0.01% of the global web")
- 6-hour refresh cadence (for in-network domains; monthly for fallback)
- Free embeddable badge (10 themes, 4 sizes)
- Unlimited free checks, no signup, no email
Why your rank may move suddenly
If your rank jumps or drops a lot, the usual causes are:
- You got a huge backlink (or lost one) — moves the link-graph signal sharply
- A viral moment — temporary traffic spike registered as a step-change in rank
- A competitor got bigger — your rank can drop without anything happening on your end, just because someone passed you
Rank is relative. If the whole web is growing, even a healthy site can drift slightly.
Common rank myths busted
> "Rank affects my Google SERP."
No. SERP ranking is per-keyword. Authority signals like rank correlate with SERP performance but don't directly determine it.
> "Lower rank number is better."
Yes. Rank #1 is the best. Rank #10,000,000 is the worst (still ranked at all).
> "I should obsess over my rank."
No. Rank is a vanity metric. Useful for status, perspective, comparison. Not useful for tactical decisions. For tactical decisions, use Lighthouse score + DA + Trust Score.