mobile view safari dev tools

How to Open Safari Developer Tools & Enable Mobile View Mode

John on May 12, 2021

In this tutorial, we will learn how to open the Safari developer console and enable mobile view for responsive web development.

How to Enable Safari Developer Tools

If you don't have developer tools enabled in Safari, you will need to do this before the console can be opened by using the following steps:

• From the main menu go to Safari > Preferences (or use the CMD + , keyboard shortcut.)
• Go to the Advanced tab.
• Check "Show Developer menu in menu bar"

Open the Safari Developer Console

Now open the developer console in responsive mode by going to the menu and selecting Develop > Enter Responsive Design Mode :

Alternatively, use the keyboard shortcut CTRL + CMD + R to enter responsive developer mode.

Now you can work on your website in a variety of different mobile device screen sizes by selecting them at the top of the page:

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Inspecting Safari’s Web Browser on a Mobile Device

Article summary

Why inspect on a device mobile browser, set up osx safari for inspection.

Inspecting the browser gives you access to the details of a website or application. Using built-in developer tools and third-party add-ons, we can view the inner workings of an application.

For example, you can see the content structure in DOM, view the console for logs or error messages, and review network requests for assets being loaded. When debugging a user interface problem, you can use the elements panel to modify live content on the screen, changing the content, type color, or button sizes.

By parsing though this information, you can often get to the bottom of your issue.

Most browsers now have tools to mimic devices such as tablets and mobiles, so you can inspect and debug right on your computer. This has been extremely helpful in developing and testing our work, but sometimes, it doesn’t go far enough.

Because this solution is just emulating a mobile device, it doesn’t always have the same oddities as the actual device. Fortunately, you can plug in a device and inspect it just as you would with a normal browser on your computer.

Let’s walk through an example using Safari.

For this solution to work, both your device and computer need to be properly configured. In our example, we’ll be using OSX Safari on an iPhone with iOS 10 and a Macbook Pro.

Set up your device

• Click Setting to access your general iPhone Settings.
• Scroll and select Safari’s Settings.
• Scroll and select Advanced.
• Toggle the Web Inspector to On.

Set up your computer

• Open Safari.
• Open Preferences from the File Safari dropdown menu.
• Click the Advance tab in the options.
• Turn on Show Develop menu in menu bar.

Great! We’re almost there.

Now plug your device into the computer via USB. Using the mobile device, navigate to a page or application you want to inspect.

Next, shift over to your computer. With Safari open, select the Develop menu in the menu bar. Toward the top of that list, you should see your device’s name and the windows that are available to inspect. Select the page or application to inspect, and the inspection window will open.

From here, the review process works the same as it would if you were inspecting a window on your local machine. There are a couple of drawbacks such as not being able to target an element with your mouse or right-click to inspect an element. Instead, you’ll have to navigate up and down the DOM tree or leverage the find feature via Command + F in the inspect window.

This method has allowed us to fix difficult bugs as well as test and prototype right in the native browser. Give it a try next time you’re in that situation.

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Safari Dev Tools: The Complete 2023 Guide

Introduction to safari developer tools.

Safari is Apple's proprietary web browser that comes pre-installed on all Mac and iOS devices. Its integrated developer tools provide everything web developers need to build, debug and optimize websites for Apple's ecosystem.

In this comprehensive tutorial, we'll cover key capabilities of Safari's dev tools including:

• The Web Inspector for inspecting page structure and CSS
• The Debugger for stepping through JavaScript code
• The Resources panel for auditing page assets
• The Audits panel for testing web standards compliance
• Device Mode for simulating mobile screens
• Advanced debugging features like conditional breakpoints
• Network throttling to simulate real-world conditions
• Experimental features for early access

By the end, you'll have master expertise using Safari dev tools to squash bugs faster, improve site performance, and deliver exceptional web experiences across Apple devices. You'll also discover resources like DevHunt to continue exploring the latest Safari developer tools.

A Brief History of Safari

Safari originated within Apple in 2003, based on the open source KHTML rendering engine. It was first released for Mac OS X Panther and quickly became Apple's default browser.

In 2007, Apple launched the first Windows version of Safari to expand its userbase. That same year, Safari made its mobile debut on the first iPhone.

Over the years, Safari has gone through many major version updates adding new features and support for emerging web standards. It remains the pre-installed browser on all Apple operating systems and devices including Macs, iPhones and iPads.

Why Learn Safari Developer Tools?

Here are some key reasons web developers should learn Safari dev tools:

• Pre-installed on all Mac and iOS devices, used by millions globally
• Allows direct debugging on iOS devices
• Can emulate mobile devices in desktop browser
• Essential for targeting Apple's ecosystem
• Identify optimizations for Safari to improve site experience
• Learn how your sites perform on Safari and make improvements
• Fix rendering issues specific to WebKit browser engine
• Utilize experimental features to build cutting-edge websites
• Discover new Safari dev tools on platforms like DevHunt

With Safari holding significant browser market share, especially in the mobile space, having expertise in its developer tools is vital for crafting high-quality cross-browser experiences.

Core Safari Developer Tools

Now let's dive into the core developer tools available within Safari on both desktop and mobile.

The Web Inspector

The Web Inspector is the main hub for visually inspecting and modifying a web page. Key functions include:

• View and edit the live DOM tree
• Inspect and modify CSS styles
• Audit accessibility information
• Analyze network requests and performance
• Identify layout issues or style problems
• Live edit code changes right in the browser

For front-end developers, the Inspector is indispensable for debugging HTML, CSS and accessibility issues. You can instantly see how changes to markup and styles affect rendering.

The Debugger

Safari's JavaScript Debugger allows pausing code execution to step through scripts line-by-line. You can:

• Set breakpoints to isolate issues
• Inspect stack traces and variable scopes
• Profile memory usage and CPU utilization
• Emulate device throttling conditions
• Blackbox third-party scripts

The Debugger equips you to tackle even the most complex JavaScript bugs. From tracking down logic errors to profiling performance, it's an essential tool for front-end logic and optimization.

The Resources Panel

This panel displays all resources loaded by the page like scripts, stylesheets, fonts, images and media. For each resource you can:

• View request URLs, status codes and timings
• Filter by type, folder location or domain
• Check dependencies and redundancy
• Audit performance and bottlenecks
• Download resources to your machine

Knowing exactly what resources a page loads is invaluable for optimizing performance. The Resources panel helps you eliminate unnecessary requests and prioritize critical assets.

Storage Inspector

The Storage Inspector lets you view and edit browser storage like cookies, LocalStorage, SessionStorage and IndexedDB. You can:

• Add, modify or delete stored keys and values
• Export storage data as JSON
• Emulate different browser states for testing
• Clear storage entirely to test initial experience

Being able to inspect persistence mechanisms is vital for debugging issues related to state management in modern web apps.

The Audits Panel

Safari's Audits panel runs diagnostics on pages to surface optimization opportunities and standards compliance issues. Audits include:

• Performance analysis and scoring
• Accessibility checks following WCAG guidelines
• Best practices for progressive web apps
• SEO enhancements
• Modern web platform usage

Running audits before launching any website can help you catch critical problems early and compare against industry benchmarks.

Advanced Safari Developer Tools

Beyond the basics, Safari offers powerful advanced tools for seasoned developers.

Device Mode

Device Mode accurately emulates mobile screens and conditions right in desktop Safari:

• Simulate precise device dimensions and resolution
• Throttle CPU and network to mimic real devices
• Essential for building mobile-friendly, responsive sites
• Test touch events and gestures during development

With Device Mode, you can build fully optimized mobile experiences without constantly switching devices.

Advanced Debugging

Safari provides next-level JavaScript debugging capabilities:

• Set conditional breakpoints using expressions
• Group breakpoints for easy management
• Step through async code with async stack traces
• Profile memory heap allocations over time
• Blackbox scripts to hide library code
• Break on caught or uncaught exceptions

These advanced features help you tackle difficult bugs in even the most complex single-page apps and frameworks like Vue.js.

Network Throttling

Network Throttling allows simulating slow network connections, like 3G and LTE. You can:

• Rate limit bandwidth and latency
• Identify assets blocking page load
• Debug loading behavior in emerging markets
• Optimize performance for offline/low-bandwidth
• Throttle cache usage and response compression

Testing how your site performs under real-world network conditions is crucial to providing good user experiences for all.

Experimental Features

Safari lets developers try out experimental tools before they are formally released:

• Get early access to new capabilities
• Provide feedback to help shape future features
• Use at your own risk as they are still in development
• Currently includes CSS Flexbox debugging tools

Tapping into experimental features allows you to build cutting-edge experiences and directly influence the browser platform's evolution.

Debugging JavaScript Issues

Now let's explore strategies for debugging JavaScript using Safari's advanced capabilities.

Breakpoint Usage

Effective breakpoint usage is key for isolating issues:

• Set breakpoints directly within the source code
• Organize breakpoints into groups by context
• Use conditional breakpoints to pause on specific criteria
• Disable breakpoints without deleting to toggle behavior
• Manage breakpoints efficiently even in complex codebases

Mastering breakpoints gives you precise control over pausing execution to inspect logic flow and data.

Scope Inspection

Understanding scope is vital for tracking down variable issues:

• Inspect variable values in different call frames
• Detect scope pollution across closures and modules
• Ensure code executes in the intended lexical scope
• Fix bugs caused by accessing stale variable references
• Avoid global namespace pollution

With Safari's scoping tools, you can confidently debug even complex nested closures and callback contexts.

Async Debugging

Safari provides multiple approaches for debugging asynchronous code:

• Step through promise resolutions and rejections
• Inspect async operation call stacks and task queues
• Profile async code performance with CPU profiler
• Set breakpoints within async callbacks and timers
• Visually trace async code flows

Smooth async debugging helps you tackle race conditions, timing issues, and callback hell.

Error Handling

The key to debugging runtime errors is Safari's break on exception feature:

• Break on any caught or uncaught exceptions
• Inspect error call stacks to trace where issues originate
• Log values with console.log() to debug logic flow
• Validate edge cases and fix crashes
• Handle errors gracefully to improve user experience

With robust error handling, you can isolate bugs quicker and build more resilient apps.

Optimizing Page Speed

Next let's explore some common techniques for optimizing page speed using Safari developer tools.

Image Optimization

Safari provides multiple ways to optimize images:

• Audit image sizes and formats using the Resources panel
• Compress and resize images as needed
• Lazy load offscreen images to improve TTI
• Serve next-gen formats like WebP to Safari users
• Remove unnecessary decorative images

With Safari's insight into image resources, you can significantly cut page weight and load times.

Script Loading

Optimizing script loading is key for performance:

• Minimize parser-blocking JavaScript
• Load non-critical scripts asynchronously
• Dynamically create and load scripts
• Code split bundles into logical chunks
• Tree shake and minify code to reduce payload

Safari shows you exactly how scripts impact loading behavior so you can optimize delivery.

Caching Assets

Effective caching can boost repeat visit performance:

• Set optimal cache lifetimes for static assets
• Cache assets locally using service workers
• Version assets linked to app release cycles
• Avoid cache-busting query strings
• Maximize cache reuse for returning users

The Resources panel helps you dial in caching for faster loads without staleness.

Layout Thrashing

Diagnosing layout thrashing is key for smooth UX:

• Identify forced synchronous layouts
• Defer non-critical DOM updates with requestAnimationFrame()
• Avoid reading styles after writes during rendering
• Batch DOM reads/writes together
• Profile with Debugger to pinpoint problems

With Safari's performance tools, you can isolate and fix sources of jank and lag.

Wrap Up and Key Takeaways

Safari developer tools provide everything needed to build high-quality websites targeting Apple's ecosystem.

Key highlights include:

• Debugging directly on iOS devices with Web Inspector
• Stepping through JavaScript with advanced Debugger features
• Auditing pages for standards compliance
• Simulating mobile devices and networks during development
• Optimizing performance using Network Throttling
• Trying out experimental capabilities early
• Discovering new Safari dev tools on platforms like DevHunt

Learning Safari developer tools allows you to find and fix cross-browser issues faster. You can optimize sites specifically for Safari and deliver stellar experiences to millions of Apple users worldwide.

With a comprehensive understanding of Safari's robust toolset, you can confidently build, debug and enhance modern progressive web apps. Safari developer tools help web developers succeed across platforms.

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How to Activate the iPhone Debug Console or Web Inspector

Use Safari's web developer tools to study problematic websites

• Saint Mary-of-the-Woods College
• Switching from Android

What to Know

• Activate Web Inspector on iOS: Go to Settings > Safari > Advanced and move the Web Inspector toggle switch to the On position.
• Use Web Inspector on macOS: Connect your iOS device to a Mac and choose the URL to inspect from the Develop menu.

If you run into a bug or another issue with a website on Safari mobile, use the Web Inspector tool to investigate. This article explains how to use the Safari console for iPhone to debug errors with the help of your Mac computer. Instructions apply to iPhones with iOS 14, iOS 12, or iOS 11, and well as Macs with macOS Big Sur (11.0), macOS Catalina (10.15), or macOS Mojave (10.14).

Activate Web Inspector on Your iPhone or Other iOS Device

The Web Inspector is disabled by default since most iPhone users have no use for it. However, if you're a developer or you're curious, you can activate it in a few short steps. Here's how:

Open the iPhone  Settings  menu.

On an iPhone with an early version of iOS, access the Debug Console through Settings > Safari > Developer > Debug Console . When Safari on the iPhone detects CSS, HTML, and JavaScript errors, details of each display in the debugger.

Scroll down and tap  Safari  to open the screen that contains everything related to the Safari web browser on your iPhone, iPad, or iPod touch.

Scroll to the bottom of the page and select Advanced .

Move the Web Inspector toggle switch to the On position.

Connect Your iOS Device to Safari on a Mac

To use the Web Inspector, connect your iPhone or another iOS device to a Mac that has the Safari web browser and enable the Develop menu .

With Safari open, select Safari from the menu bar and choose  Preferences .

Select the  Advanced  tab.

Select the Show Develop menu in menu bar check box and close the settings window.

From the Safari menu bar, select Develop and choose the name of your attached iOS device, then select the URL that appears under Safari to open the debug console for that site.

After you connect your device, use your Mac to inspect the website you want to debug and have it open in the Safari mobile browser.

What Is Web Inspector?

Web developers use Web Inspector to modify, debug, and optimize websites on Macs and iOS devices. With Web Inspector open, developers can inspect the resources on a web page. The Web Inspector window contains editable HTML and notes regarding the styles and layers of the web page in a separate panel.

Before iOS 6, the iPhone Safari web browser had a built-in Debug Console that developers used to find web page defects. Recent versions of iOS use Web Inspector instead.

With Safari 9 and OS X Mavericks (10.9), Apple introduced Responsive Design Mode in Web Inspector. Developers use this built-in simulator to preview how web pages scale to different screen sizes, resolutions, and orientations.

To set up Web Inspector on your iPad, open your iPad's Settings and select Safari > Advanced , then turn Web Inspector On . Connect the iPad to a Mac computer, then open Safari on the Mac and select Safari > Preferences > Advanced , then turn on Show Develop menu in menu bar .

You cannot just connect your iPhone to a Windows PC and start using Web Inspector through Chrome like you can with a Mac. Installing package manager software can provide you a sort of workaround, but it's not recommended unless you're familiar with the package management app you intend to use.

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The mobile DevTools you'll love using

Inspect is a developer tool that enables you to inspect and debug your web apps and websites on ios and android from macos, windows and linux..

Join the best

You are in good hands.

Engineers from these companies are already happy (Inspect)ors, more productive and saving time.

Why Inspect?

Debug the web on ios devices.

Inspect enables to you debug Safari and WebViews on your iOS device.

Debug the web on Android

Inspect enables you to debug Chrome and WebViews on your Android device.

No new hardware needed

No new hardware needed. Inspect is provides a software-only solution that works across platforms.

UI from Chrome DevTools

Inspect is built on Chrome DevTools, so you feel right at home from day one.

Inspect over Wifi (on MacOS)

Inspect supports debugging of iOS devices over WIFI on macOS. It's time to let go of the cables.

Screencasting (experimental)

Inspect gives you screencasting for iOS and Android so you can see your changes as you go. All without leaving Inspect.

Works on macOS, Linux and Windows

Inspect and debug your web apps and websites on iOS and Android from macOS, Windows and Linux.

How-To Geek

How to turn on the develop menu in safari on mac.

The Develop menu lets you view page source in Safari on Mac.

Quick Links

How to enable the develop menu in safari on mac, how to view page source in safari on mac.

When you right-click on any web page in Safari on Mac, it doesn't reveal the Show Page Source and Inspect Element buttons. To see these, you need to enable the Develop menu---we'll show you how to do that.

Once you've enabled the Develop menu, right-clicking a blank space on any website will reveal the Inspect Element and Show Page Source buttons. These allow you to take a look at the source code of any website, which is useful for things like downloading images from websites and debugging code or finding out what it looks like behind any site (for website designers).

You can easily turn on the Develop menu in Safari by following a couple of steps. Open Safari on your Mac and click the "Safari" button in the menu bar.

Next, select "Preferences." Alternatively, you can use the keyboard shortcut Command+, (comma). This will also open up Safari preferences.

Go to the "Advanced" tab.

Check the box for "Show Develop Menu in Menu Bar."

Now the Develop menu will appear between Bookmarks and Window at the top.

Apart from being able to view the page source, this will allow you to access developer-focused features, such as disabling JavaScript on any website.

Once you've enabled the Develop menu, there are a couple of ways to view the page source in Safari.

Open any website in Safari and right-click the blank space on the page. Now, select "Show Page Source." You can also get to this menu by using the keyboard shortcut Option+Command+u.

If you're looking for images or other media elements from any web page, Safari makes it easy to find these. In the left-hand pane, you will see various folders such as Images, Fonts, etc. Click the "Images" folder to quickly find the photos that you need.

After selecting an image, you can view its details easily by opening up the details sidebar. The button to open this is located at the top-right of the console, just below the gear icon. You can also open this with the shortcut Option+Command+0.

Click "Resource" at the top of the details sidebar to view details, such as the size of the image and its full URL.

You can change the position of the page source console easily, too. There are two buttons at the top-left of this console, right next to the X button. Click the rectangle icon to move the console to a different side within the browser window.

If you'd like to open the page source console in a separate window, you can click the two-rectangles icon. This will detach the console and open it in a separate window.

To check out the code for any specific element on the page, you can right-click that element and select "Inspect Element." This will take you directly to the code for the element that you selected.

Whenever you're done looking at the code, click the X button to close the page source console and return to browsing on Safari. You can also check out how to view a website's page source in Google Chrome  here.

Related: How to View the HTML Source in Google Chrome

How To Open Developer Tools On Safari

• Software & Applications
• Browsers & Extensions

Introduction

Opening developer tools in a web browser is a fundamental skill for anyone involved in web development, debugging, or troubleshooting website issues. Developer tools, also known as DevTools, provide a suite of powerful features that allow you to inspect and modify the structure and layout of a web page, analyze network activity, debug JavaScript, and much more. In this article, we will explore how to open developer tools specifically in the Safari web browser.

Safari, known for its sleek interface and robust performance, offers multiple methods to access its developer tools. Whether you prefer using the menu bar, keyboard shortcuts, or the context menu, Safari provides convenient options to suit your workflow. By mastering these methods, you can seamlessly integrate developer tools into your web development process, enhancing your efficiency and productivity.

In the following sections, we will delve into each method, providing step-by-step instructions and tips to ensure a smooth experience. Whether you are a seasoned web developer or just starting your journey, understanding how to open developer tools in Safari is a valuable skill that can empower you to create, debug, and optimize websites with confidence. Let's embark on this exploration and unlock the potential of Safari's developer tools together.

Method 1: Using the Menu Bar

Opening developer tools in Safari using the menu bar is a straightforward and reliable method. This approach is particularly useful for users who prefer navigating through familiar menu options to access essential browser features. Here's how you can effortlessly open developer tools using the menu bar:

Launch Safari : Begin by opening the Safari web browser on your Mac or iOS device. Ensure that you are running the latest version of Safari to access the most advanced developer tools and features.

Navigate to the Menu Bar : Look at the top of your screen for the menu bar. You will find the menu options such as "File," "Edit," "View," "History," "Bookmarks," "Develop," "Window," and "Help."

Access the "Develop" Menu : Click on the "Develop" option in the menu bar. If you don't see the "Develop" menu, you may need to enable it first. To do this, go to "Safari" > "Preferences" > "Advanced" and check the box next to "Show Develop menu in menu bar."

Open Developer Tools : Once you have accessed the "Develop" menu, you will find a list of options, including "Show Web Inspector." Click on "Show Web Inspector," and the developer tools panel will appear, providing you with a comprehensive set of tools to analyze and modify web pages.

Explore the Developer Tools : With the developer tools now open, take a moment to familiarize yourself with the various tabs and features available. You can inspect the HTML and CSS of the web page, analyze network activity, debug JavaScript, and much more.

By utilizing the menu bar to access developer tools in Safari, you can seamlessly integrate this essential feature into your web development workflow. This method provides a convenient and intuitive way to leverage the power of Safari's developer tools, empowering you to create, debug, and optimize websites with precision and efficiency.

Method 2: Using Keyboard Shortcuts

Harnessing the power of keyboard shortcuts is a time-saving and efficient way to access developer tools in Safari. By memorizing and utilizing these shortcuts, you can seamlessly integrate developer tools into your web development workflow, enhancing your productivity and efficiency. Here's how you can effortlessly open developer tools using keyboard shortcuts:

Initiate Keyboard Shortcut : To open the developer tools using a keyboard shortcut, simply press "Option + Command + I" on your Mac keyboard . Alternatively, you can use "Option + Command + C" to open the developer tools and immediately activate the cursor for inspecting elements on the web page.

Access Developer Tools : Upon executing the keyboard shortcut, the developer tools panel will swiftly appear, providing you with a comprehensive set of tools to inspect, debug, and optimize web pages. This rapid access to developer tools streamlines your workflow, allowing you to delve into web page elements and network activity without interrupting your creative momentum.

Navigate with Ease : With the developer tools now open, take a moment to explore the various tabs and features available. You can effortlessly navigate through the Elements, Console, Sources, Network, and other panels using the keyboard or mouse, gaining valuable insights into the structure and behavior of the web page.

By leveraging keyboard shortcuts to access developer tools in Safari, you can seamlessly integrate this essential feature into your web development process. The intuitive and rapid nature of keyboard shortcuts empowers you to swiftly analyze and modify web pages, debug JavaScript, and optimize website performance with precision and speed. Embracing these shortcuts as part of your web development toolkit can elevate your proficiency and effectiveness, enabling you to create exceptional web experiences with ease.

Method 3: Using the Context Menu

Utilizing the context menu to access developer tools in Safari offers a convenient and efficient method, particularly for users who prefer a streamlined approach to web development. By leveraging the context menu, you can seamlessly open the developer tools directly from the web page, eliminating the need to navigate through multiple menu options. Here's a detailed exploration of how you can effortlessly open developer tools using the context menu:

Navigate to the Web Page : Visit the web page that you intend to inspect and analyze using the developer tools. Whether it's your own website, a client's project, or a site you're troubleshooting, the context menu provides a swift pathway to accessing the developer tools.

Right-click on the Web Page : Once you are on the web page, right-click (or control-click) anywhere on the page to reveal the context menu. This menu typically offers a range of options related to the content and functionality of the web page.

Access the "Inspect Element" Option : Within the context menu, look for the option labeled "Inspect Element" or a similar variation. Click on this option, and the developer tools panel will promptly appear, providing you with a comprehensive set of tools to inspect and modify the web page's structure and behavior.

Explore the Developer Tools : With the developer tools now open, take a moment to explore the various tabs and features available. You can inspect and modify the HTML and CSS of the web page, analyze network activity, debug JavaScript, and much more, all within the context of the specific elements you've chosen to inspect.

By leveraging the context menu to access developer tools in Safari, you can seamlessly integrate this essential feature into your web development workflow. This method offers a direct and intuitive pathway to swiftly analyze and modify web pages, empowering you to gain valuable insights and optimize website performance with precision and ease. Embracing the context menu as part of your web development toolkit can elevate your proficiency and effectiveness, enabling you to create exceptional web experiences with seamless accessibility to developer tools.

In conclusion, mastering the art of opening developer tools in Safari is a valuable skill that can significantly enhance your web development capabilities. By exploring the various methods to access developer tools, including using the menu bar, keyboard shortcuts, and the context menu, you can seamlessly integrate this essential feature into your workflow, empowering you to create, debug, and optimize websites with precision and efficiency.

Whether you prefer the familiarity of navigating through the menu bar, the rapid accessibility of keyboard shortcuts, or the streamlined efficiency of the context menu, Safari offers versatile options to suit your preferences and workflow. Each method provides a seamless pathway to unlock the powerful suite of developer tools, enabling you to inspect and modify web pages, analyze network activity, debug JavaScript, and much more.

By leveraging the menu bar, users can rely on the intuitive navigation to access developer tools, seamlessly integrating this essential feature into their web development process. The convenience of using familiar menu options ensures a smooth transition into the world of web page inspection and modification.

Embracing keyboard shortcuts as part of your web development toolkit can elevate your proficiency and effectiveness, enabling you to swiftly analyze and modify web pages, debug JavaScript, and optimize website performance with precision and speed. The rapid access to developer tools streamlines your workflow, allowing you to delve into web page elements and network activity without interrupting your creative momentum.

Utilizing the context menu to access developer tools offers a direct and intuitive pathway to swiftly analyze and modify web pages, empowering you to gain valuable insights and optimize website performance with precision and ease. This method eliminates the need to navigate through multiple menu options, providing a streamlined approach to web development.

In essence, understanding how to open developer tools in Safari is a foundational skill that can empower you to create exceptional web experiences. By seamlessly integrating developer tools into your web development process, you gain the ability to inspect, debug, and optimize websites with confidence, ultimately enhancing the quality and performance of your web projects. Embrace the versatility of Safari's developer tools and unlock the potential to elevate your web development capabilities.

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How can I quickly open a mobile view of a page in a desktop browser?

Since we're now in a mobile-first world, it becomes more and more important to be able to test websites easily on mobile phones, or on emulated mobile phones. I collaborate with people who work on websites and social media offerings, and I would like to encourage them to regularly open websites from their desktop browsers in a mobile view. I'm specifically thinking of the browser's built-in "mobile view" feature, which is often hidden among all the other developer tools a browser provides, but I'm happy to consider anything which is just as quick to set up.

How can you open a mobile view of a website from a desktop browser?

• 23 "Since we're now in a mobile-first world" Woah there a minute... context is for kings. –  Lightness Races in Orbit Feb 6, 2018 at 12:49
• 3 Just a comment - don't know the context really, but if I was asked to be opening webpages from my desktop/laptop in mobile view first ....what's the point of using the desktop? I hope by "encourage", you're not forcing it via some code or other method. Especially since many webpages that do format for mobile are pared down quite a bit and don't have full functionality. –  BruceWayne Feb 6, 2018 at 16:27
• 1 Add a change user agent or similar extension or plug in to your browser, and set a smart phone user agent. –  Salman A Feb 6, 2018 at 17:10
• 1 “I would like to encourage people to regularly open websites from their desktop browsers in a mobile view.” ...That's goofy. And waste all that desktop screen real estate? Desktop and mobile both have their place, and that's why responsive solutions have been developed. Let's deliver the best experience possible for every user, and let people browse on the device that's most comfortable for them. Anyway, valid question, as web designers and developers need to emulate multiple devices when building sites. –  Mentalist Feb 7, 2018 at 2:52
• 2 @Mentalist I meant people who are working on websites and social media offerings. –  Flimm Feb 7, 2018 at 7:28

6 Answers 6

• In Windows/Linux, press Ctrl + Shift + M
• In macOS, press option + command + M

You can also find the menu item under ("Tools"), "Web Developer", "Responsive Design Mode".

Chrome and Edge:

You need to have "Developer Tools" open first:

• In Windows/Linux, press Ctrl + Shift + I or just F12
• In macOS, press option + command + I

Once developer tools is open and focused, you can toggle device emulation:

• In macOS, press command + shift + M

There is a small button in the developer tools toolbar that enables device emulation, if you prefer to click a button rather than press a keyboard shortcut.

It looks like Apple have disabled by default the keyboard shortcut for entering responsive design mode. You can follow this tutorial on configuring a keyboard shortcut for it .

You can find the menu item by clicking "Develop", "Enter Responsive Design Mode". If you can't see the "Develop" menu item, you need to enable it by opening "Preferences", "Advanced", and ticking "Show Develop menu in menu bar".

• 1 Note that ctrl shift M works only if developer tools are already open –  Naramsim Feb 6, 2018 at 10:29
• 3 @Naramsim Thanks. That only applies to Chrome. I've edited my answer. –  Flimm Feb 6, 2018 at 11:19
• 3 For Windows/Chrome, F12 is a potentially easier way to get to Dev Tools... although if the next keystroke is going to be Ctrl-Shift-M, I suppose starting with Ctrl-Shift-I may be more logical. –  sǝɯɐſ Feb 6, 2018 at 13:21
• I believe on previous versions of Safari Cmd+Shift+R would open responsive design mode. Seems to not exist on latest version unless you manually bind it –  Downgoat Feb 6, 2018 at 23:52
• 1 Chrome remembers if you wanted a mobile preview, so once you've enabled it, you can toggle between mobile/desktop simply using F12 –  Pieter De Bie Feb 8, 2018 at 12:26

Flimm’s answer is 100% correct. Just in case remembering the shortcuts is too much of a hassle, it’s this blue button in the Developer Tools to toggle between the web view and mobile/tablet view:

Or with Firefox:

After enabling the device toolbar, you can then choose the make and model of the device you wish to emulate from the dropdown menu.

• 1 What piece of software does the first part refer to? –  Kamil Maciorowski Feb 7, 2018 at 5:22
• @KamilMaciorowski DevTools is the developer tool found in Chrome and Opera. –  OptimusCrime Feb 7, 2018 at 7:46
• @KamilMaciorowski This is not a software, this is available on any of your web browser. Specifically if you're using chrome, right click on any window and click on inspect and you will see this window in your browser docked below or to the right of the browser. These are more commonly known as Dev Tools. –  Shobhit Garg Feb 7, 2018 at 16:13
• @Shobbit Garg Is that the windows, which opens when I press CTRL + Shift + C? –  daniel.heydebreck Feb 8, 2018 at 8:22
• @daniel.neumann Unfortunately I use mac, so I cannot test and see what happens when you press those keys. But referring to the shortcuts listed above, this window should open by pressing "ctrl + shift + I" on chrome, "ctrl + shift + M" on firefox or pressing f12 on IE/Edge. –  Shobhit Garg Feb 8, 2018 at 15:04

For the purpose of testing, i use the following websites :-

• http://www.jamus.co.uk/demos/rwd-demonstrations/
• http://mattkersley.com/responsive/

Both of the above sites allow me to view my web application in multiple device widths.

You can set the user agent and window size from the command line or launch config of a shortcut.

For example:

& "C:\Program Files\Google\Chrome\Application\chrome.exe" --new-window --window-size=375,812 --user-agent="Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.67 Mobile Safari/537.36" --user-data-dir=C:\workspace\tmp\chrome https://google.com

The --user-data flag is mandatory to make this work . Create a folder for it.

Add a "user agent switcher" extension in your browser and specify a mobile user agent. If the website is smart enough it will serve you mobile optimized version.

I will not recommend any specific extension. The ideal one should have presets for mobile browsers built-in and the ability to enable or disable user agent switching on per-website basis.

• 1 This is incorrect. Mobile layouts should work based on device / screen dimensions via CSS media queries, not user agent strings - it's not 2006 any more. –  PiX06 Feb 7, 2018 at 13:51
• Most browsers' tool that allows a mobile view also lets you set a user-agent at the same time. –  Flimm Feb 7, 2018 at 14:33
• 1 @PiX06 then no effort is necessary. Just resize the browser window! –  Salman A Feb 7, 2018 at 15:04
• Unfortunately, I find myself with many questions: If I'm resizing the browser window anyway, why do I need to bother with user agents? To which dimensions should I resize the window? How do I measure the window? –  Mathieu K. Feb 9, 2018 at 5:26

The above answers are great for those who like to stick with a single browser, or have limited desktop "workspace" (eg. single monitor less than 21" at a low res).

There is actually an even more interesting solution I've recently discovered: https://blisk.io/

I will refrain from using the (sort of) "affiliate link" for any personal gain (There is a "token based system" that you can earn credits to get things like free "team cloud space" & "premium features" to use with it), but Blisk is actually pretty snazzy.

This Chromium-based "browser built for development" provides a multitude of ways to demo the page in various devices with a vertical "pane" on the LEFT side, much like you see Chrome Developer Tools default to the right vertical column.

It's work a look. Though there are some limits to its "freemium extended functionality", it still works very well to "preview" both the PC and Mobile versions of your pages / sites in a side-by-side comparison. The paid features seem pretty rad too if you work in remote teams (though I personally think it need a better "test drive" program before hooking people on the monthly cost).

Full disclosure: there is an EXTREMELY annoying "time limit" per day on the mobile preview part (toggles open/closed from the icon to the right of the address bar - change the "device preview" from the tiny link-to-the-menu in the top right corner "Show device list").

BliskDemoScreenshot

Also: I've found a few really nifty tricks with Browser Extensions like the 2 different "User-Agent Switcher"'s from Chrome/Firefox that go a bit further by letting you toggle between browser user-agent strings of various Operating Systems AND the browsers for them.

I prefer the "esolutions.se" flavor because of how easy it is to add custom user-agent strings to the list for as many customizations as you could ever want (runs offline also, which can be handy in certain cases): https://chrome.google.com/webstore/detail/user-agent-switcher/clddifkhlkcojbojppdojfeeikdkgiae

Anyway, that's my 2 cents. :P

• not available for Linux :-( –  david.perez Mar 3, 2020 at 14:52

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Set any homepage in Safari for iOS and visionOS

infinitepower18/Homepage-MobileSafari

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Homepage for Safari iOS/visionOS

With this extension, you can set any URL and Safari will automatically load your homepage upon opening a new tab.

Unlike macOS, Safari on iOS and visionOS doesn't have the ability to set a homepage, so this extension was created to solve this.

To set up, enable the extension and ensure it is set as the new tab page. To set the homepage URL of your choice:

Open your device's settings app

Select the Safari app followed by Extensions

Select the extension and tap Settings

Available for iOS and visionOS.

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iOS 18 May Feature All-New 'Safari Browsing Assistant'

iOS 18 will apparently feature a new Safari browsing assistant, according to backend code on Apple's servers discovered by Nicolás Álvarez . MacRumors contributor Aaron Perris confirmed that the code exists, but not many details are known at this time.

Update: Álvarez has since said that iCloud Private Relay might not be related to this feature.

A browsing assistant in Safari could be one of the many new generative AI features that are rumored to be coming to the iPhone with iOS 18 later this year. There are already multiple iPhone web browsers with AI tools, such as Microsoft Edge with a GPT-4-powered Copilot and Arc Search , which can summarize web pages to provide concise information.

Álvarez also uncovered a so-called "Encrypted Visual Search" feature in the backend code on Apple's servers, but no specific details are known. MacRumors contributor Steve Moser last year discovered a new Visual Search feature for Apple's Vision Pro headset in visionOS beta code, which would allow users to copy and paste printed text from the real world into apps and more, but the feature has yet to launch. It is possible that Apple is planning to debut a more secure version of the feature. However, the code could also relate to the iPhone's existing Visual Look Up feature that can identify objects in photos and videos.

Apple is set to unveil iOS 18 during its WWDC keynote on June 10 , so we should learn more about these potential new features in a few more months.

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