Faizan Ahmed

Software Engineer

About

Software engineer with 3+ years of experience. I build tools that solve problems I face daily — Responsive Tool came from being tired of testing one device at a time in DevTools.

Badges

Tastemaker

Gone streaking

Maker History

Responsive ToolTest your site on phone, tablet & desktop side by side, free
Sep 2026

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Joined Product HuntSeptember 4th, 2026

Forums

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1d ago

Responsive Tool - Test your site on phone, tablet & desktop side by side, free

Responsive Tool shows your site on mobile, tablet, and desktop at once — free, no signup, no download. Paste any URL, see it across real device viewports side by side. Swap any pane's device, enter custom widths, refresh one viewport after a code change, or share your setup via URL. Built with Next.js 16, React 19, Tailwind v4, on Cloudflare Workers. Includes reference pages for device viewport sizes and CSS breakpoints.