Head to head
duplichecker.com vs vlex.com
vlex.com is more readable to AI, 84 against 69 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.
Scanned 4 hours ago · full report
Scanned 4 hours ago · full report
Where the difference is by dimension
| Dimension | duplichecker.com | vlex.com |
|---|---|---|
| Reach Whether AI crawlers and answer-engine fetchers are permitted to request the page at all. What h… |
24 / 40 | 34 / 40 |
| Readability Whether a fetcher that does not execute JavaScript receives the actual content, in markup an ex… |
22 / 25 | 25 / 25 |
| Structure Machine-readable markup that states the page's type, entities, canonical URL, and discrete fact… |
18 / 20 | 15 / 20 |
| Attribution Signals that let an answer engine name the author, date the content, resolve the publisher, and… |
1 / 15 | 7 / 15 |
The measurements side by side
| Measurement | duplichecker.com | vlex.com |
|---|---|---|
| Answer engines blocked | 0 | 2 |
| Training crawlers blocked | 0 | 5 |
| Refuses AI agents at the edge | yes | yes |
| Words of text without JavaScript | 3,689 | 1,007 |
| Structured data | yes | yes |
| Sitemap | yes | no |
| llms.txt | no | no |
duplichecker.com blocks no tracked AI crawler in robots.txt.
vlex.com blocks anthropic-ai, ChatGPT-User, cohere-ai, FacebookBot, Google-Extended, GPTBot, omgilibot.
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