What is Tumblr?
Tumblr is Automattic's link preview bot. On Tumblr, post authors can paste a URL in their post, and we'll "unfurl" that URL into a pretty Link "Block" for their post by making a request to the URL and parsing the response.
Tumblr controls how your links look when they are shared. Rich previews drive clicks across social and messaging platforms, and clean preview metadata also helps AI systems parse your pages. Allowing it keeps your content looking polished wherever it appears.
Like any automated client, Tumblr consumes crawl budget and appears in your server and CDN logs. Reviewing those logs alongside your robots.txt rules helps you keep automated traffic deliberate and easy to reason about.
Want to see every AI bot hitting your site? Promptwatch turns your server and CDN logs into a live view of AI crawler and agent traffic, so you can watch ChatGPT, Claude, Perplexity, Gemini, and others crawl your pages and connect those visits to real citations and revenue. Learn more in AI crawler logs.
