This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
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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.
Hey! I'm Faizan, a frontend developer. I built this because I was tired of toggling one device at a time in Chrome DevTools responsive mode.
Paste a URL, see phone, tablet, and desktop layouts at once. Swap any pane's device or enter a custom width. Share the URL and a teammate sees your exact setup.
One thing I found building this: 93% of dev portfolio sites load fine in iframes, but only 44% of marketing sites do — most block via X-Frame-Options. Working on a solution for that next.
Also planning: more device presets, screenshot export.
100% free, no signup, no tracking. Would love your feedback!
About Responsive Tool on Product Hunt
“Test your site on phone, tablet & desktop side by side, free”
Responsive Tool was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #154 on the daily leaderboard. 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.
On the analytics side, Responsive Tool competes within Productivity, Developer Tools and Web Design — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Responsive Tool performed against the three products that launched closest to it on the same day.
Who hunted Responsive Tool?
Responsive Tool was hunted by Faizan Ahmed. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Responsive Tool including community comment highlights and product details, visit the product overview.
Faizan Ahmed
Hey! I'm Faizan, a frontend developer. I built this because I was tired of toggling one device at a time in Chrome DevTools responsive mode.
Paste a URL, see phone, tablet, and desktop layouts at once. Swap any pane's device or enter a custom width. Share the URL and a teammate sees your exact setup.
One thing I found building this: 93% of dev portfolio sites load fine in iframes, but only 44% of marketing sites do — most block via X-Frame-Options. Working on a solution for that next.
Also planning: more device presets, screenshot export.
100% free, no signup, no tracking. Would love your feedback!