Head to head
tcpdf.org vs undocs.org
tcpdf.org is more readable to AI, 85 against 66 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 1 day ago · full report
Scanned 1 day ago · full report
Where the difference is by dimension
| Dimension | tcpdf.org | undocs.org |
|---|---|---|
| Reach Whether AI crawlers and answer-engine fetchers are permitted to request the page at all. What h… |
37 / 40 | 39 / 40 |
| Readability Whether a fetcher that does not execute JavaScript receives the actual content, in markup an ex… |
25 / 25 | 19 / 25 |
| Structure Machine-readable markup that states the page's type, entities, canonical URL, and discrete fact… |
16 / 20 | 4 / 20 |
| Attribution Signals that let an answer engine name the author, date the content, resolve the publisher, and… |
4 / 15 | 1 / 15 |
The measurements side by side
| Measurement | tcpdf.org | undocs.org |
|---|---|---|
| Answer engines blocked | 2 | 0 |
| Training crawlers blocked | 10 | 0 |
| Refuses AI agents at the edge | no | no |
| Words of text without JavaScript | 1,354 | 463 |
| Structured data | yes | no |
| Sitemap | yes | no |
| llms.txt | no | no |
tcpdf.org blocks anthropic-ai, Bytespider, CCBot, ChatGPT-User, ClaudeBot, cohere-ai, FacebookBot, GPTBot, ImagesiftBot, omgili, omgilibot, Scrapy, SemrushBot-OCOB.
undocs.org blocks no tracked AI crawler in robots.txt.
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