Free Responsive Website Tester
Test responsive website design by previewing any URL on desktop, laptop, tablet and mobile screens at once. Arrange the device stage, capture and export as PNG, JPG, SVG, WebP or PDF. Free, no signup.
Added August 27, 2026
· Last analysed August 27, 2026 · via 
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 27 August 2026; the live site may have changed since.
Free Responsive Website Tester looks production-ready overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Visible gaps: missing several security headers and incomplete email security.
Launched on Product Hunt on August 27, 2026. The site is hosted on Vercel, with a domain registered 2 weeks before launch. We've detected 13 technologies on this site, covering advertising, ui library, analytics, and consent tooling. The stack includes Google Funding Choices, Tailwind CSS, and TanStack Start.
It's on one of the most common stacks we track, shared by 181 launches.
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Tech Stack (13)
| CSS framework |
Tailwind CSS
|
| Developer tools |
Vite
|
| JavaScript library |
TanStack Router
|
| Meta-framework |
TanStack Start
|
| UI library |
Lucide Icons
|
shadcn/ui
|
| Advertising |
Google Ads
|
Google AdSense
(2)
|
|
| Analytics |
Google Analytics
(4)
|
| Consent |
Google Funding Choices
|
| Tag management |
Google Tag Manager
(2)
|
Infrastructure
Email Security
Storage (6)
| Name | Lifetime | Detected as |
|---|---|---|
| FCCDCF | 1y | - |
| _ga | 1y | Google Analytics |
| _ga_0JHPLV0W8Y | 1y | Google Analytics |
| Key | Size | Detected as |
|---|---|---|
| sorawi-responsive-offsets-v2 | 107 B | - |
| sorawi-responsive-settings | 149 B | - |
| sorawi-responsive-zorder-v2 | 38 B | - |
Readiness Breakdown How?
Performance How?
⚠ 2 images: 2 oversized, 2 without width/height
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?
| Signal | Points |
|---|---|
| AI onboarding signals | +5 |
| AI palette signals | +5 |
| AI writing signals | +5 |
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.