pdf.io

.io crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 852 ms crawled 2026-05-19

DE · 148.251.196.27 · AS24940 Hetzner Online GmbH

Reputation 100/100

Classifying

HTML metadata

Title

PDF.io – Essential Online PDF Tools

Description

Free online PDF tools: convert, edit, merge, split, and compress in your browser. Fast, easy, and secure. No signup or installation required.

Language

Translations

de
en
es
fr
id
it
ja
ko
pl
pt
ru
th
tr
vi
zh-hans
zh-hant

Technology

Server: nginx
CMS: Gatsby

Analytics

Google Analytics
Google Tag Manager

Ads

Google AdSense

Third-party hosts loaded (5)

pagead2.googlesyndication.com×2
www.googletagmanager.com×2
apis.google.com×1
id.123apps.com×1
www.google-analytics.com×1

Contact

Email

support@123apps.com

DNS records live

NS

ns1.gcorelabs.net
ns2.gcdn.services

TXT

Show 4 TXT records

google-site-verification=iUxkZ46xlYIdVh6loU0VUJ5zIUvWtWuoMmhOxWxxiTg
google-site-verification=uArJfviAJMrjPUMN4hGVOALVl5LJe25M-yCIUWisxJM
yandex-verification: b24d3db140d439ce
ahrefs-site-verification_09a30b8bd5aa4cdeb1743769580d0a758c944c7d2b0f00340744e997aaca74c2

Email authentication no MX

SPF

v=spf1 -all

strict (-all)

DMARC

v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;

policy: reject (enforced) · sp=reject

DKIM

Show 12 DKIM selectors

default: v=DKIM1; p=
google: v=DKIM1; p=
selector1: v=DKIM1; p=
selector2: v=DKIM1; p=
k1: v=DKIM1; p=
k2: v=DKIM1; p=
mail: v=DKIM1; p=
dkim: v=DKIM1; p=
s1: v=DKIM1; p=
s2: v=DKIM1; p=
mxvault: v=DKIM1; p=
smtpapi: v=DKIM1; p=

selectors probed

Certificate (current)

WE1

from 2026-04-05 to 2026-07-04

Expires in 46 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 95/100 Checked live page: https://pdf.io/

present

strict-transport-security
content-security-policy
x-frame-options
x-content-type-options
referrer-policy

findings

missing Permissions Policy

Header values

referrer-policy: origin-when-cross-origin
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
content-security-policy: frame-ancestors 'self'
strict-transport-security: max-age=63072000; includeSubDomains; preload