Preview any URL across common Mac display sizes, stacked, scaled, and labeled.
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Tracked since2026
0 reviews trackedThe Bottom Line
Entry price
Free, no paid tier
Biggest pro
Completely free with no sign-up required
Biggest con
Cannot embed sites with strict X-Frame-Options or CSP policies
TL;DR - Studio Practice
- Simultaneously previews URLs across multiple Mac display sizes.
- Supports local development URLs for responsive design testing.
- Available as a free online tool or downloadable single HTML file for offline use.
Pricing: Free forever
Best for: Individuals & startups
What is Studio Practice?
Mac Screen Simulator is a free, no-sign-up tool designed for developers and designers to instantly preview how any website or web application appears across various common Mac display sizes. It displays a given URL simultaneously on virtual screens representing MacBook Air 13", 15", MacBook Pro 14", 16", and the 27" Studio Display 5K. The tool stacks, scales, and labels these previews, making it easy to identify the current display size you are viewing on.
This utility is particularly useful for front-end developers, UI/UX designers, and QA testers who need to ensure responsive design across different Apple desktop environments. It supports previewing local development URLs (e.g., http://localhost:3000), allowing for quick iteration and testing without deployment. The tool can be used directly online or downloaded as a single HTML file for offline use, offering privacy and portability as it contains no tracking.
While highly effective for most web content, it's important to note that some websites with strict security policies (like Google, Twitter, or banking sites) may refuse to embed. However, it generally works well for personal development projects and most public websites, providing a convenient way to check design responsiveness and layout consistency.
Available on: Web, macOS
Pros & Cons
Pros
- Completely free with no sign-up required
- Supports local development environments
- Offers offline functionality via downloadable HTML file
- Provides immediate visual feedback on responsive design across key Mac displays
- Privacy-focused with no tracking
Cons
- Cannot embed sites with strict X-Frame-Options or CSP policies
- Best viewed on desktop due to full Mac display sizes
- Limited to Mac display sizes, no other device types
Key Features
Simultaneous preview across multiple Mac display sizesSupports MacBook Air 13", 15", MacBook Pro 14", 16", and Studio Display 5KDisplays previews stacked, scaled, and labeledIdentifies your current device with a "Your screen" badgeAllows preview of localhost URLsDownloadable as a single HTML file for offline useNo sign-up or tracking required
Pricing
Free
Studio Practice is completely free to use with no hidden costs.
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Studio Practice FAQ
How does Studio Practice help with responsive web design?
Studio Practice allows users to preview any URL simultaneously across common Mac display sizes, including MacBook Air 13" and 15", MacBook Pro 14" and 16", and the 27" Studio Display 5K. This immediate visual feedback helps front-end developers and UI/UX designers ensure their web content adapts correctly to different Apple desktop environments.
What kind of user benefits most from Studio Practice?
Studio Practice is particularly beneficial for front-end developers, UI/UX designers, and QA testers. It helps these professionals verify responsive design across various Apple desktop environments and supports quick iteration by previewing local development URLs.
How is Studio Practice priced?
Studio Practice is completely free to use, requiring no sign-up or paid plans. It offers full functionality without any cost.
Can Studio Practice be used for local development environments?
Yes, Studio Practice supports previewing local development URLs, such as http://localhost:3000. This feature enables developers to quickly iterate and test their web applications without needing to deploy them first.
What are the limitations of Studio Practice compared to tools like BrowserStack?
Studio Practice is limited to displaying web content across various Mac display sizes, whereas tools like BrowserStack offer a broader range of device types and operating systems. Additionally, Studio Practice may not embed websites with strict security policies like X-Frame-Options or CSP.
Does Studio Practice offer an offline mode?
Yes, Studio Practice can be downloaded as a single HTML file for offline use. This provides privacy and portability, as the tool contains no tracking mechanisms.
Source: studiopractice.io