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Tumblr

GoodBotVerifiedBOT

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. Operated by Automattic.

GoodBot
Assessment
Page Preview
Category
BOT
Kind
1
Data sources
AI-generated summary, drawn from Cloudflare, operator docs, and community data

What is Tumblr?

Tumblr is a web crawler operated by Automattic. 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.

Helpful — Verified, safe crawler. Respects robots.txt and provides operator documentation.

Identification

Bot name
Tumblr
Operator
Automattic
Category
Page Preview
Kind
BOT
Verification
Verified bot
Cloudflare slug
automattic-tumblr
User-agent patterns
Tumblr/
User-agent string
Tumblr/14.0.835.186
Main use cases
Link preview generationThumbnail creationSocial media cards

Why it crawls your site

Tumblr crawls websites to generate link previews and thumbnails for shared URLs. It is operated by Automattic as part of their link preview infrastructure. If you see this bot in your server logs, it is a verified crawler and generally safe.

Block or allow Tumblr

Block it

Add a Disallow rule for Tumblr/ in your robots.txt file. You can also block at the server level using your web server configuration or CDN firewall rules to filter requests matching the user-agent string.

# Block Tumblr from crawling your entire site
User-agent: Tumblr/
Disallow: /

# Allow Tumblr full access
User-agent: Tumblr/
Allow: /
Allow & verify

Ensure your robots.txt allows Tumblr/. Verify requests are genuine by checking the user-agent string and referring to Automattic's documentation.

Traffic & trends

Cloudflare Radar traffic

No Cloudflare traffic data available.

Google Trends interest

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Related bots

Other crawlers operated by Automattic.

Data sources

This profile is compiled from the following sources.

CloudflareRadar
Last updated July 21, 2026