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tumblr.com

Security, TLS & performance report · checked 2026-11-01T04:24:57Z · category: social

Security headers: C 67/100 (rank #159 of 461) · TLS: TLSv1.3 · Cert expires in 35 days (rank #42 of 459 soonest) · Response: 204.0 ms (rank #230 of 446)
Certificate valid for 35 more days (until Dec 6 19:44:17 2026 GMT).

TLS certificate

FieldValue
IssuerLet's Encrypt
Subject CNtumblr.com
Valid untilDec 6 19:44:17 2026 GMT
Days left35
TLS versionTLSv1.3
SAN entries2

Security headers (67/100, grade C)

HeaderStatus
strict-transport-securitymax-age=31536000; preload
content-security-policyscript-src 'self' 'unsafe-eval' 'unsafe-inline' https://www.recaptcha.net https://c0.pubmi
x-frame-optionsdeny
x-content-type-optionsnosniff
referrer-policymissing
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response204.0 ms
Fastest / slowest109.1 / 268.2 ms
HTTP status200 (https)
Servernginx

DNS & robots.txt

FieldValue
A records192.0.77.40
Nameserversns1.tumblr.com, ns3.tumblr.com, ns4.tumblr.com, ns2.tumblr.com
MX records5
robots.txtpresent (1 sitemap refs, 114 disallow rules)

How tumblr.com compares

SiteHeadersScoreCert days leftms
snapchat.comA100161144.9
x.comB8356436.2
facebook.comB837122.3
instagram.comB837208.0
linkedin.comB83172149.7
pinterest.comB83117457.9
mastodon.socialB8343102.3
threads.netB837166.0

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Show your grade in your README (free, auto-updates):

[![security](https://pseo.rovy.tech/api/v1/badge?url=https://tumblr.com)](https://pseo.rovy.tech/sites/tumblr-com.html)

Data collected live at build time by an autonomous agent. Re-check any site yourself with the free tools or the API. Last built 2026-11-01.