What devices can I preview?

iPhone (multiple sizes), Android phones, iPad, generic tablets, and desktops. Mix breakpoints to test responsive.

How accurate is the preview?

Very close to actual device rendering. Browser does the responsive work; we just constrain dimensions.

Why use a simulator vs. real device?

Faster iteration. Switch devices in 2 seconds vs. picking up actual hardware.

Does this replace real device testing?

No. Always do final QA on real devices. Simulator catches 90% of issues; real-device catches the last 10%.

Can I rotate orientation?

Yes — toggle portrait/landscape per device.

Mobile-first vs. responsive?

Mobile-first prioritizes small screens; responsive adapts. Use simulator to check both work.

Why does my page look different on iPhone vs. Android?

Browser differences (Safari vs. Chrome rendering). Simulator emulates browser rules; real devices may differ slightly.

Should I test all breakpoints?

Critical breakpoints: 320px, 375px, 768px, 1024px, 1280px+.

Is this useful for ad creative?

Yes — test how landing pages render after ad click.

Mobile preview vs. mobile-friendly test?

Preview is visual; test is checks. Use both.

Can I share previews with team?

No native share; screenshot the simulation.

Free SEO Tool

Free Mobile Preview Simulator

Preview any URL on iPhone, Android, iPad, and other devices. Test responsive breakpoints. Free, instant, no signup.

4.6on G2

4.8on Trustpilot

Used by 32,000+ designers

Enter a URL to see the preview

Supports any public website

What this tool does

The Mobile Preview Simulator renders any URL inside accurate device frames — iPhone, Android, iPad, foldables. Switch in 2 seconds.

Catch responsive bugs before they ship. Real device QA still recommended for final pass.

How to preview

Five steps from URL to verified.

Paste URL

Public URL (some sites block iframes).

Pick device

iPhone, Android, iPad, etc.

Toggle rotation

Portrait or landscape.

Compare devices

Switch between presets to spot issues.

Iterate and fix

Update CSS; re-preview.

When designers use it

Six common workflows.

Landing page QA

Before campaign launch, preview ad-driven landing pages on key devices.

Email design check

Email rendering varies wildly. Preview on phone before send.

Responsive design iteration

Edit, preview, edit. Simulator faster than swapping devices.

Client review presentations

Show clients live mobile preview during design reviews.

Mobile-first SEO

Test mobile rendering ahead of indexing.

A/B test variant preview

Compare variations side-by-side at mobile width.

Platform-specific guides

How to integrate into design workflows.

WordPress

Use simulator during theme dev.
Verify all template URLs.
Real device for final QA.

Webflow

Webflow has built-in mobile preview.
Use this simulator for production verification.
Test breakpoints not in Webflow defaults.

Email design

Render email URL in simulator.
Check Gmail/Outlook mobile.
Final QA via Litmus or actual phones.

Next.js

Run dev server.
Use simulator on localhost URLs (with iframe-friendly config).
Real device for touch QA.

Responsive frameworks

Tailwind/Bootstrap have responsive classes.
Simulator confirms breakpoints work.
Validate at standard sizes: 320, 768, 1024.

Grigora vs. other simulators

Side-by-side comparison.

Capability	Grigora	Responsively	BrowserStack	Free generators	Real devices
Free + unlimited	Yes	Yes	Free trial	Yes	N/A
Multi-device presets	Yes	Yes	Yes	Limited	No
Side-by-side comparison	Yes	No	Yes	No	No
Rotation toggle	Yes	Yes	Yes	Limited	Yes
No signup	Yes	Yes	Account required	Yes	N/A
Result speed	<5 sec	<10 sec	<5 sec	<5 sec	N/A
Touch simulation	No	No	Limited	No	Yes
Real-browser engine	Iframe	Iframe	Real	Iframe	Real

Common errors and how to fix them

Eight issues users hit.

Page does not load in simulator

Cause: Site blocks iframes (X-Frame-Options).

Fix: Real device test only; simulator can't bypass frame blocking.

Layout breaks at small width

Cause: Fixed-width container or non-responsive CSS.

Fix: Use max-width: 100% and responsive units.

Content overflows on mobile

Cause: Wide images or tables.

Fix: Use overflow-x scroll or responsive images.

Touch interactions don't work

Cause: Simulator is desktop browser pretending.

Fix: Real device for touch testing.

Images load slowly

Cause: Site or your network.

Fix: Test multiple times; pre-warm cache.

Wrong device dimensions

Cause: Old preset values.

Fix: Verify against current device specs.

Iframe blocked entirely

Cause: CSP or X-Frame-Options strict.

Fix: Manually test on real device.

Browser-specific bugs missed

Cause: Simulator uses your browser engine.

Fix: Test on actual Safari/Chrome on devices.

Original data from our 2026 mobile simulator usage

Across 6,000 sessions.

24%

% of pages with major mobile rendering issues

iPhone 16 (38%)

Frequently asked questions

Twelve answers about mobile simulation.

Related free tools

Other utilities that pair with Mobile Simulator.

Preview on mobile right now

Multi-device preview, instant. Free, unlimited.

Try the Simulator