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Mobile HUD Previewer

mobile website tester

Preview responsive layouts. Know the limits.

↳ Capture a public page at a chosen viewport, compare phone and tablet layouts, and export a PNG with optional HUD guides.

The frame is a visual aid. Verify interaction, accessibility and Safari behavior on a real device before release.

How to preview a mobile website

  1. Enter a public HTTPS URL. Do not include passwords, private pages or secret query parameters.
  2. Choose a device preset or custom viewport, then rotate or compare to inspect responsive breakpoints.
  3. Wait for the screenshot, then export a PNG or share the URL and viewport settings.

The service renders a screenshot remotely using Microlink, with Urlbox as a configured fallback. Images are publicly cached for up to seven days. Login walls, bot protection, provider quotas and network failures can prevent a capture.

Unlike a live iframe, a screenshot cannot navigate, scroll or submit forms. CSP and X-Frame-Options protect embedded pages; this tool does not disable them. Device frames and safe-area or thumb-reach overlays are illustrative guides, not hardware emulation or an accessibility assessment.

Mobile preview questions

How do I test a website on iPhone online?

Enter a public HTTPS URL and select an iPhone viewport preset. Compare the resulting screenshot at different widths. For touch interactions, Safari rendering and device-specific behavior, test on a real iPhone as well.

Is this a free iPhone simulator?

It is a free screenshot previewer with device frames, not an iOS simulator. No account or install is required. It cannot run native apps or reproduce Safari's browser engine.

What does the HUD show?

The HUD shows the requested viewport dimensions and a Tailwind breakpoint guide. Optional grid, safe-area, ruler and thumb-reach overlays are visual guides; they do not measure the page's own CSS or certify usability.

Can I export or share a preview?

After a screenshot finishes loading, export the frame and enabled overlays as PNG. A share link includes the page URL, device, orientation, background and custom dimensions. It does not freeze the image or share a login session.

Why might a screenshot fail or look outdated?

The remote renderer may encounter login walls, bot protection, network problems or rate limits. Retry after a temporary failure or open the page directly. Successful captures are cached for up to seven days, so retrying does not force a fresh capture.

Is the preview interactive or private?

No. It is a static screenshot. The public URL is sent to a screenshot provider and images are cached publicly. Do not enter private or secret-bearing URLs. Preferences and recent URLs are stored in your browser; anonymous tool events measure usage.

Need a production handoff? Email Ralph about the layout, or explore Lovable to production. Building an integration? Test a public MCP server, or browse all free tools.