Who blocks AI · #60 in the Majestic Million
robots.txt · checked 9 Nov 2026
Does tumblr.com block AI crawlers?
Yes. tumblr.com’s robots.txt blocks 7 of the 19 AI crawlers we track, including ClaudeBot, Google-Extended, CCBot and 4 more. Search engines such as Googlebot and Bingbot may crawl it.
GPTBotAllowedOAI-SearchBotAllowedClaudeBotBlockedPerplexityBotAllowedGoogle-ExtendedBlockedCCBotBlocked- robots.txt
- www.tumblr.com/robots.txt · 174 lines
- llms.txt
- none
- Checked
- 9 November 2026, as canaicrawl. We check again every week.
Every bot, and the line that decides
Search engines
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
Googlebot | Partly blocked | line 5 · Disallow: /radar line 6 · Disallow: /widgets/ and 18 more | |
Bingbot | Microsoft | Partly blocked | line 74 · Disallow: /radar line 75 · Disallow: /widgets/ and 18 more |
DuckDuckBot | DuckDuckGo | Allowed | no rule matches the home page |
Applebot | Apple | Partly blocked | line 5 · Disallow: /radar line 6 · Disallow: /widgets/ and 18 more |
PetalBot | Huawei | Allowed | no rule matches the home page |
YandexBot | Yandex | Allowed | no rule matches the home page |
Baiduspider | Baidu | Allowed | no rule matches the home page |
AI search
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
OAI-SearchBot | OpenAI | Allowed | no rule matches the home page |
PerplexityBot | Perplexity | Allowed | no rule matches the home page |
Claude-SearchBot | Anthropic | Allowed | no rule matches the home page |
DuckAssistBot | DuckDuckGo | Allowed | no rule matches the home page |
Amazonbot | Amazon | Blocked | line 145 · Disallow: / under User-agent: Amazonbot |
YouBot | You.com | Blocked | line 173 · Disallow: / under User-agent: YouBot |
AI training
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
GPTBot | OpenAI | Allowed | no rule matches the home page |
ClaudeBot | Anthropic | Blocked | line 149 · Disallow: / under User-agent: ClaudeBot |
Google-Extended | Blocked | line 129 · Disallow: / under User-agent: Google-Extended | |
CCBot | Common Crawl | Blocked | line 121 · Disallow: / under User-agent: CCBot |
Applebot-Extended | Apple | Blocked | line 161 · Disallow: / under User-agent: Applebot-Extended |
GoogleOther | Allowed | no rule matches the home page | |
Meta-ExternalAgent | Meta | Blocked | line 169 · Disallow: / under User-agent: meta-externalagent |
Bytespider | ByteDance | Allowed | no rule matches the home page |
User-triggered fetchers
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
ChatGPT-User | OpenAI | Allowed | no rule matches the home page |
Claude-User | Anthropic | Allowed | no rule matches the home page |
Perplexity-User | Perplexity | Allowed | no rule matches the home page |
MistralAI-User | Mistral | Allowed | no rule matches the home page |
Meta-ExternalFetcher | Meta | Allowed | no rule matches the home page |
SEO tools
| Bot | Operator | robots.txt | Deciding line |
|---|---|---|---|
AhrefsBot | Ahrefs | Allowed | no rule matches the home page |
SemrushBot | Semrush | Allowed | no rule matches the home page |
MJ12bot | Majestic | Allowed | no rule matches the home page |
DotBot | Moz | Allowed | no rule matches the home page |
View www.tumblr.com/robots.txt · 174 lines
1Sitemap: https://www.tumblr.com/sitemap.xml
2
3# Google Search Engine Robot
4User-agent: Googlebot
5Disallow: /radar
6Disallow: /widgets/
7Disallow: /audio_file
8Disallow: /video_file
9Disallow: /dashboard
10Disallow: /x
11Disallow: /svc/account
12Disallow: /dashboard/notes
13Disallow: /customize
14Disallow: /impixu
15Disallow: /liked
16Disallow: /search/*?before=*
17Disallow: /search/*?language=*
18Disallow: /tagged/*+*
19Disallow: /tagged/*?before=*
20Disallow: /tagged/*?language=*
21Disallow: /open
22Disallow: /link_to
23Disallow: /sticky-ad-iframe.html
24Disallow: /privacy/consent
25
26# Yahoo! Search Engine Robot
27User-agent: Slurp
28Disallow: /radar
29Disallow: /widgets/
30Disallow: /audio_file
31Disallow: /video_file
32Disallow: /dashboard
33Disallow: /x
34Disallow: /svc/account
35Disallow: /dashboard/notes
36Disallow: /customize
37Disallow: /impixu
38Disallow: /liked
39Disallow: /search/*?before=*
40Disallow: /search/*?language=*
41Disallow: /tagged/*+*
42Disallow: /tagged/*?before=*
43Disallow: /tagged/*?language=*
44Disallow: /open
45Disallow: /link_to
46Disallow: /sticky-ad-iframe.html
47Disallow: /privacy/consent
48
49# Yandex Search Engine Robot
50User-agent: Yandex
51Disallow: /radar
52Disallow: /widgets/
53Disallow: /audio_file
54Disallow: /video_file
55Disallow: /dashboard
56Disallow: /x
57Disallow: /svc/account
58Disallow: /dashboard/notes
59Disallow: /customize
60Disallow: /impixu
61Disallow: /liked
62Disallow: /search/*?before=*
63Disallow: /search/*?language=*
64Disallow: /tagged/*+*
65Disallow: /tagged/*?before=*
66Disallow: /tagged/*?language=*
67Disallow: /open
68Disallow: /link_to
69Disallow: /sticky-ad-iframe.html
70Disallow: /privacy/consent
71
72# Microsoft Search Engine Robot
73User-agent: msnbot
74Disallow: /radar
75Disallow: /widgets/
76Disallow: /audio_file
77Disallow: /video_file
78Disallow: /dashboard
79Disallow: /x
80Disallow: /svc/account
81Disallow: /dashboard/notes
82Disallow: /customize
83Disallow: /impixu
84Disallow: /liked
85Disallow: /search/*?before=*
86Disallow: /search/*?language=*
87Disallow: /tagged/*+*
88Disallow: /tagged/*?before=*
89Disallow: /tagged/*?language=*
90Disallow: /open
91Disallow: /link_to
92Disallow: /sticky-ad-iframe.html
93Disallow: /privacy/consent
94
95# Every bot that might possibly read and respect this file.
96User-agent: *
97Disallow: /radar
98Disallow: /widgets/
99Disallow: /audio_file
100Disallow: /video_file
101Disallow: /dashboard
102Disallow: /x
103Disallow: /svc/account
104Disallow: /dashboard/notes
105Disallow: /customize
106Disallow: /impixu
107Disallow: /liked
108Disallow: /search/*?before=*
109Disallow: /search/*?language=*
110Disallow: /tagged/*+*
111Disallow: /tagged/*?before=*
112Disallow: /tagged/*?language=*
113Disallow: /open
114Disallow: /link_to
115Disallow: /sticky-ad-iframe.html
116Disallow: /privacy/consent
117Crawl-delay: 1
118
119# Common Crawl's crawler
120User-agent: CCBot
121Disallow: /
122
123# SentiBot's crawler
124User-agent: sentibot
125Disallow: /
126
127# Google Bard's crawler
128User-agent: Google-Extended
129Disallow: /
130
131# Facebook's crawler
132User-agent: FacebookBot
133Disallow: /
134
135# webz.io's crawler
136User-agent: omgili
137Disallow: /
138
139# webz.io's crawler
140User-agent: omgilibot
141Disallow: /
142
143# Amazon's crawler
144User-agent: Amazonbot
145Disallow: /
146
147# ClaudeBot's crawler
148User-agent: ClaudeBot
149Disallow: /
150
151# anthropic-ai's crawler
152User-agent: anthropic-ai
153Disallow: /
154
155# ImageSift's AI crawler
156User-agent: ImagesiftBot
157Disallow: /
158
159# Apple's AI crawler
160User-agent: Applebot-Extended
161Disallow: /
162
163# TurnitinBot crawler
164User-agent: TurnitinBot
165Disallow: /
166
167# Meta AI crawler
168User-agent: meta-externalagent
169Disallow: /
170
171# Block YouBot from entire site
172User-agent: YouBot
173Disallow: /
174
What do the bots actually get?
This page reads robots.txt, which states what tumblr.com asks of crawlers. A firewall or CDN can still refuse a bot that robots.txt allows. The live check requests the page as each bot and shows the status it gets.
Run a live check on tumblr.com Test a path in the robots.txt tester
History
- 19 October 2026: first checked.
Questions
Does tumblr.com block GPTBot?
No. tumblr.com’s robots.txt lets GPTBot crawl the site. GPTBot is OpenAI’s crawler for training data; blocking it doesn’t affect ChatGPT search, which uses OAI-SearchBot. Checked 9 November 2026.
Does tumblr.com block ClaudeBot?
Yes. tumblr.com’s robots.txt disallows ClaudeBot from the whole site (line 149: Disallow: /). ClaudeBot is Anthropic’s crawler for training data. Checked 9 November 2026.
Does tumblr.com block Google-Extended?
Yes. tumblr.com’s robots.txt disallows Google-Extended from the whole site (line 129: Disallow: /). Google-Extended is the token that controls whether Google may use pages for Gemini training and grounding; it doesn’t affect Google Search. Checked 9 November 2026.
Does tumblr.com block PerplexityBot?
No. tumblr.com’s robots.txt lets PerplexityBot crawl the site. PerplexityBot is the crawler that indexes pages for Perplexity’s answers. Checked 9 November 2026.
Can ChatGPT search find tumblr.com?
Yes. tumblr.com’s robots.txt lets OAI-SearchBot crawl the site. OAI-SearchBot is the crawler behind ChatGPT search; blocking it keeps the site out of ChatGPT’s search answers. Checked 9 November 2026.