jwt.io

.io crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 1555 ms crawled 2026-05-18

US · 172.64.155.65 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: JSON Web Tokens - jwt.io
Description: JSON Web Token (JWT) is a compact URL-safe means of representing claims to be transferred between two parties. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS).
Language: en
Canonical: https://jwt.io

Open Graph

url: https://jwt.io
title: JSON Web Tokens - jwt.io
locale: en_US
site name: JSON Web Tokens - jwt.io
description: JSON Web Token (JWT) is a compact URL-safe means of representing claims to be transferred between two parties. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS).

Technology

CDN: Cloudflare
CMS: Next.js

Cookie consent

OneTrust

Third-party hosts loaded (3)

assets.adobedtm.com×1
cdn.auth0.com×1
cdn.cookielaw.org×1

Social

DNS records live

NS

carrera.ns.cloudflare.com
jaime.ns.cloudflare.com

MX

10 mxa-00553301.gslb.pphosted.com
10 mxb-00553301.gslb.pphosted.com

TXT

google-site-verification=GQkcab37IZnqQ2FOiFUhF6lnnPJNsLS3UHmpnXG8Qh4

Email authentication strong

SPF: v=spf1 -all
strict (-all)
DMARC: v=DMARC1; p=reject; rua=mailto:zum8b4yl@ag.dmarcian.com; ruf=mailto:zum8b4yl@fr.dmarcian.com; pct=100;
policy: reject (enforced)
DKIM: no key found at common selectors

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 50/100 Checked live page: https://www.jwt.io/

present

strict-transport-security

findings

missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

strict-transport-security: max-age=63072000

Links to (11)

Linked from (6)