Head to head

ae.org vs earthsky.org

earthsky.org is more readable to AI, 85 against 76 out of 100. Both were measured with the same audit: robots.txt policy for 48 AI agents, live requests under four crawler user agents, and a JavaScript-free read of the homepage.

ae.org 76/10076ae.org

Scanned 19 hours ago · full report

earthsky.org 85/10085earthsky.org

Scanned 19 hours ago · full report

Where the difference is by dimension

Dimensionae.orgearthsky.org
Reach
Whether AI crawlers and answer-engine fetchers are permitted to request the page at all. What h…
39 / 4039 / 40
Readability
Whether a fetcher that does not execute JavaScript receives the actual content, in markup an ex…
22 / 2515 / 25
Structure
Machine-readable markup that states the page's type, entities, canonical URL, and discrete fact…
9 / 2019 / 20
Attribution
Signals that let an answer engine name the author, date the content, resolve the publisher, and…
1 / 159 / 15

The measurements side by side

Measurementae.orgearthsky.org
Answer engines blocked01
Training crawlers blocked03
Refuses AI agents at the edgenono
Words of text without JavaScript576916
Structured datanoyes
Sitemapyesyes
llms.txtnoyes

ae.org blocks no tracked AI crawler in robots.txt.

earthsky.org blocks anthropic-ai, CCBot, ChatGPT-User, FacebookBot, GPTBot.

Compare your own site

Free, no account. To watch a competitor and get an email when their crawler policy changes, see pricing.