Mobile Preview Simulator
View your site on different devices.
Enter a URL to see the preview
What is the Mobile Preview Simulator?
The Mobile Preview Simulator allows you to preview any website at real device screen sizes or fully custom dimensions. It emulates responsive viewports so you can test layouts across mobile, tablet, foldable, and desktop breakpoints instantly.
Performance breakdown
| Feature | Benefit | SEO Impact |
|---|---|---|
| Custom Dimensions | Test any width & height | High |
| Real Device Presets | Popular screens included | High |
| Live Rendering | Instant preview | High |
| Responsive Debugging | Breakpoint testing | Medium |
How It Works
Test responsiveness in seconds.
Enter URL
Load any public webpage.
Choose Size
Select device or custom dimensions.
Preview Live
Inspect layout instantly.
Why Responsive Testing Matters
Breakpoint Validation
See how your site behaves at every screen width.
Edge Case Testing
Catch layout issues on unusual sizes.
Mobile Optimization
Ensure smooth mobile experiences.
Faster QA Cycles
Debug without physical devices.
Powerful Preview Features
Built for modern responsive design.
Custom Viewport Sizes
Any width or height
Device Presets
Popular screens included
Live Iframe Preview
Instant rendering
Tablet & Desktop Modes
Large breakpoints
Interactive Scrolling
Full page testing
Unlimited Usage
Always free
Why Use Grigora’s Simulator?
Grigora combines real device presets with fully customizable viewport dimensions so you can simulate every responsive breakpoint in one simple interface — perfect for developers, designers, and QA teams.
What You Can Preview
Test layouts across all screen sizes.
Mobile Screens
Small width testing
Tablet Views
Medium breakpoints
Custom Breakpoints
Any dimension
Desktop Layouts
Wide screens
Who Is This For?
Frontend Developers
Responsive debugging
UI Designers
Layout validation
QA Engineers
Cross-size testing
Agencies
Client previews
Marketers
Landing page checks
Bloggers
Mobile formatting
Common Responsive Issues Solved
Broken Breakpoints
Layouts failing at specific widths
Overflow Bugs
Content spilling off screen
Hidden Buttons
Unclickable mobile UI
Scaling Issues
Improper font and image sizing
Designed for Responsive Design Workflows
Whether you’re testing standard devices or creating custom viewport sizes for edge cases, Grigora’s preview simulator helps you catch layout problems before production.
Precision
Exact dimensions
Speed
Instant loading
Flexibility
Custom + presets
Coverage
All screen types
Usability
Simple interface
Free
Unlimited usage
Preview Any Screen Size Now
Paste URL
Public webpage
Set Dimensions
Device or custom size
View Layout
Live preview
Frequently Asked Questions
Everything you need to know about the tool.
Still have questions?
Start building your optimized site and see results for yourself.