# Domain Comparison

https://rankproof.eu/tools/competitors-domain-comparison

## Short answer

Compare two domains on a public, link-based authority score (0–10) — a relative signal for sizing up a competitor, not a Google ranking factor.

## What It Does

Compares two domains on a public, link-based authority score — a 0–10 estimate for each domain from the same free source. It is a comparative proxy for how strong each domain's links are, not a Google metric: Google does not use third-party authority scores for ranking.

## How It Works

1. Enter your domain and the competitor domain
2. We look up the authority score for each domain from the same free source
3. Return both scores side by side so you can see at a glance who has the edge
4. No traffic, keyword or backlink data — this check is authority only

## Sample input + output

INPUT

```text
domain: rankproof.eu
competitor: example.com
```

OUTPUT

```text
domain              authority (0–10)
───────────────────────────────────
rankproof.eu               4.8
example.com                6.1

example.com scores higher on public link-graph authority
```

## Why It Matters

"How do we stack up against this competitor?" comes up all the time. A shared authority score gives a quick, like-for-like read on link strength before you dig into content and links — as long as you treat it as an estimate, not a ranking factor.

## Who Uses This

- **SEO Director**: Show in one line how your domain's link strength compares with your main competitor's.
- **Content Director**: Check whether a competitor has a much stronger link profile before planning content meant to outrank them.
- **Sales Enablement**: Give sales a simple authority comparison to open the "why us" conversation against a prospect's current vendor.

## Frequently Asked Questions

### Is domain authority a Google ranking factor?

No. Google does not use third-party authority scores. They are estimates built from public link data, useful for comparing domains with each other.

### Can I compare more than two domains?

No — this check compares two domains at a time. Run it again with a different competitor to check a third.

### How fresh is the data?

Each domain pair is cached for up to 7 days to keep the check free to run — check again after that for an updated score.