perfmatters.io

.io crawl

First seen 2026-04-13 · Last seen 2026-05-02 · ok HTTP/1.1 200 398 ms crawled 2026-05-07

US · 162.159.134.42 · AS13335 Cloudflare, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Perfmatters - The #1 Web Performance Plugin for WordPress
Description
Slow WordPress sites have higher bounce rates and fewer conversions. The perfmatters plugin was created by web performance geeks to speed up your site!
Language
en-US
Generator
Heroic Knowledge Base v4.5.0
Canonical
https://perfmatters.io/

Open Graph

url
https://perfmatters.io/
title
Perfmatters - The #1 Web Performance Plugin for WordPress
locale
en_US
site name
Perfmatters
description
Slow WordPress sites have higher bounce rates and fewer conversions. The perfmatters plugin was created by web performance geeks to speed up your site!

Technology

CDN
Cloudflare
CMS
WordPress
Analytics
  • Fathom

Third-party hosts loaded (1)

  • cdn.usefathom.com×1

Social

DNS records live

NS
  • algin.ns.cloudflare.com
  • heather.ns.cloudflare.com
MX
  • 10 mxa.mailgun.org
  • 10 mxb.mailgun.org
TXT
Show 4 TXT records
  • ahrefs-site-verification_9ffb4b64690603d52bac6b19c100a97953ccd0d5ef4ac2ea8723e5ccd575aef6
  • ca3-d0164c164c6340d0bcf147469277cf07
  • google-site-verification=7duOiiGDHL9OsagK3H3cHxR74C0ROGp-Vo86fFAkuAw
  • yandex-verification: fcb94594ab940ae4

Email authentication strong

SPF
v=spf1 include:mailgun.org ~all
softfail (~all)
DMARC
v=DMARC1; p=none; fo=1; rua=mailto:dmarc@perfmatters.io
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-05-01 to 2026-07-30
Expires in 73 days

HTTP security headers

Header hygiene 60/100 Checked live page: https://perfmatters.io/

present
  • strict-transport-security
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (7)

Linked from (1)