Development — entry 063 of 98
Open Page Rank
Open Page Rank (OPR) reconstructs a PageRank-style 0–10 authority score for any domain from open web-graph data, via a single `getPageRank` endpoint that accepts up to 100 domains per call and returns JSON. It's gated by a free `API-OPR` header key (10,000 requests/hour) and has no paid tier at all; the product was acquired by Keywords Everywhere, which now runs the current version and keeps its ranking dataset refreshed roughly monthly.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingFreeNo paid tier — free for the documented use case.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score78
Authentication15/25API key required
Pricing20/20Free to use
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
Embed this badge
<a href="https://greatapis.com/api/open-page-rank/"><img src="https://greatapis.com/badge/open-page-rank.svg" alt="Scored 78 on greatapis.com"></a>Auth quickstart
- Get a key at the provider
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
Rate limit
Free tier: 60 requests/minute plus 30,000 domains/month quota (other tiers on /pricing)