indexo.dev

json.dev

.dev user

First seen 2026-05-14 · Last seen 2026-05-14 · ok HTTP/1.1 200 165 ms crawled 2026-05-14

US · 185.199.111.153 · AS54113 Fastly, Inc.

Reputation 87/100 weak security headers no dmarc policy

sector tech type app saas

HTML metadata

Title
Developer JSON Tools
Description
Online JSON tools for developers. Parse, view, validate, minify, and format JSON (As you type)
Language
en

Technology

CDN
Fastly
Server
GitHub.com
Analytics
  • Google Tag Manager

Third-party hosts loaded (2)

  • platform.slack-edge.com×1
  • www.googletagmanager.com×1

Social

DNS records live

NS
  • ns-cloud-b1.googledomains.com
  • ns-cloud-b2.googledomains.com
  • ns-cloud-b3.googledomains.com
  • ns-cloud-b4.googledomains.com
MX
  • 10 inbound-smtp.us-west-2.amazonaws.com

Email authentication weak

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-05-01 to 2026-07-30
Expires in 71 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://json.dev/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (4)