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Pretty JSON — Free JSON Formatter

Pretty print, validate, diff and convert JSON, YAML or XML online — free, private, no signup. JSON beautifier, prettier, viewer, tree editor and code generator.

prettyjson.org · Added June 8, 2026 · Last analysed June 8, 2026 · via · 60% unique tagline

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 8 June 2026; the live site may have changed since.

Pretty JSON — Free JSON Formatter ships with the launch fundamentals in place, with complete legal pages, a thorough launch checklist, and fast page loads. What needs work: no Content-Security-Policy and incomplete email security.

Launched on Product Hunt on June 8, 2026. The site is hosted on Cloudflare in the United States. Our crawler found 13 technologies on this site, covering analytics, build tooling, CDN, and consent tooling. The stack includes Google, Tailwind CSS, and Vite.

Notably, it's running the same core stack as 3,108 other launches and tighter on security headers than most Product Hunt launches.

If you own this site, refresh the snapshot and see the full fix list any time →

9.5
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Web Standards
Complete
Vibe Score 25 · Some AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (13)

Infrastructure
CDN Cloudflare
DNS Cloudflare DNS
Protocol HTTP/3
Security HSTS
Email
Business email Cloudflare Email Routing (2)
Build & Framework
Build tool Vite
CSS framework Tailwind CSS
Font Google Fonts
UI library shadcn/ui
Analytics & Marketing
Analytics Cloudflare Web Analytics
Google Analytics (2)
Consent Google
SEO Google Search Console

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Google Trust Services
Valid 10 Apr 2026 to 9 Jul 2026
Certificate as captured in this snapshot, not a live check.

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC Not published. Receivers fall back to permissive defaults.
?
MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.
?
TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (4)

Local storage (2)
KeySizeDetected as
prettyjson_layout 6 B -
prettyjson_theme 5 B -
Session storage (2)
KeySizeDetected as
prettyjson_left 0 B -
prettyjson_right 0 B -

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
Page title is 64 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

Performance How?

125 ms Server response
87% Faster than peers
2616 ms Largest contentful paint
0.44 Cumulative layout shift
1.2 MB Page weight
5 Third-party domains
0 Console errors
0 Failed requests

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

Vibe Score Breakdown How?

SignalPoints
AI palette signals +5
AI writing signals +5
AI typography signals +15

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

Blocks AI crawlers
llms.txt published
9 AI bots blocked in robots.txt
ai-train = no
search = yes
? ai-input (not declared)
? None advertised

Well-Known Files

sitemap.xml (45 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Consent manager: Google
90% unique

Security Headers (5/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

3 JS files
2 CSS files
5 Third-party domains

Brand Colours

App Manifest

PrettyJSON
display: standalone 3 icons
theme #2563eb
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.