Sizzy

Stop wasting time and speed up your development workflow with the perfect browser for web developers and designers.

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Lifetime Deal

$69 one-time $900

Stop wasting time and speed up your development workflow with the perfect browser for web developers and designers

Making your site truly responsive and accessible is hard. The most popular web browsers available have their limits for development and designing purposes. Unless you can use a proper native mobile browser you will never be able to simulate the real devices, sync the scrolling position, take full-page screenshots, and see where the bottlenecks are.

Sizzy is a browser made specifically for responsive development and designing. It helps you to make your site responsive, fast, and accessible while speeding up your development workflow by 5x and making sure your site looks perfect on all devices. 

This tool has some brilliant features that will make your panic about testing your website on multiple platforms a thing of the past.

So, let’s check it out.

Never resize your browser again

Emulate real devices, use your responsive CSS breakpoints or pick your own dimensions. No resizing needed.

Everything is in sync

Your keyboard and mouse interactions are synced between all viewports. Scroll, click, or navigate to a different url, and all the devices will follow.

Take beautiful screenshots the proper way, fast & easy

Take a screenshot of the current viewport, or the entire website. You can also screenshot all devices at once. With, or without a device frame. So many possibilities!

Inspecting element on all devices and sizes at once

Inspecting devices one by one can be a chore, so Sizzy includes Universal Inspect Element which allows you to inspect all devices at once. Nice, right?

Realistic devices and device simulation, fully customizable

Sizzy has the most accurate device simulation. It simulates the device frame, the UI for the browser & OS, and you can completely customize everything.

Design and edit directly from the browser

Toggle the Design Mode plugin and easily edit the content of your page, directly from the Sizzy browser.

Checkout this video and see how it works

Used by the fastest growing companies across the globe

What our users say about Sizzy

Sizzy Lifetime Deal (2 devices)

  • Lifetime Access to Sizzy
  • Powerful Browser for Developers
  • Suitable for macOS, Windows, and Linux
  • Speed up website development
  • License for 2 seats/devices
  • Switch and change devices anytime
  • All features are included
  • Universal Inspect Element
  • Realistic Devices
  • Screenshot Automation
  • Touch Cursor Simulation
  • Simulate Network Condition
  • Simulate color scheme
  • Presets
  • Perfect for A/B testing
  • Manage cache & cookies
  • View Simulation: Responsive, Photo, Focus, Full, Float & Zen
  • Page Navigator Plugin
  • Navigate to Selector Plugin
  • Google Fonts Plugin
  • Page Navigator Plugin
  • Design Mode to Edit Live Websites
  • Debug Styles
  • Email support
  • All future updates included
  • 30-day Money Back Guarantee

$138 one-time

Buy Now (2 codes)

Sizzy Lifetime Deal (1 device)

  • Lifetime Access to Sizzy
  • Powerful Browser for Developers
  • Suitable for macOS, Windows, and Linux
  • Speed up website development
  • License for 1 seat/device 
  • Switch and change device anytime
  • All features are included
  • Universal Inspect Element
  • Realistic Devices
  • Screenshot Automation
  • Touch Cursor Simulation
  • Simulate Network Condition
  • Simulate color scheme
  • Presets
  • Perfect for A/B testing
  • Manage cache & cookies
  • View Simulation: Responsive, Photo, Focus, Full, Float & Zen
  • Page Navigator Plugin
  • Navigate to Selector Plugin
  • Google Fonts Plugin
  • Page Navigator Plugin
  • Design Mode to Edit Live Websites
  • Debug Styles
  • Email support
  • All future updates included
  • 30-day Money Back Guarantee

$69 one-time

Buy Now

How can I activate the deal?

After purchasing you will get a redemption link and unique activation code in your mailbox. Use this link to sign-up and your deal is activated!

What if I’m not 100% satisfied?

We offer a hassle-free 30-day money back guarantee, just drop us a message and we will make sure to process the refund as soon as possible.

Will I get access to future updates?

Yes, you will get access to all future updates, templates and integrations.

Where can I find more information on Sizzy?

Feel free to check their website for more information on the product.

Founder’s Note

Hi, I'm Kitze! I created Sizzy as a web app in 2017 to help me with one of my landing pages. I quickly bumped into the limits of the web platform and realized that unless it's a proper native browser it will never be able to simulate the real devices, sync the scrolling position, take full-page screenshots, etc.

We have further developed and made Sizzy into a must-have for designers and developers.

Next to Sizzy, I created Twizzle, JSUI, OK Google, Lucky Retweet etc. I founded React Academy to teach React & GraphQL around the world. I also make YouTube Videos and stream on Twitch.

We hope you like Sizzy!

KitzeFounder of Sizzy


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19 Comments

  • Diane DEFORES says:

    Hello Tom !

    I’m considering buying :
    – Are you the only one working on SIzzy, will you recruit more people soon to grow more ?
    – Could you please add a way to display several tabs in the browser reference at the same time (like https://stackbrowser.com/) and not only one ?
    – Could you please add a fullscreen mode ?
    – Could you please add a way to expand browser reference in full viewport when needed please ? Now it’s only half

    I think that’s all I wanted to say 🧐
    What are your project on the long term ? I see that your roadmap hasn’t got a lot of “in progress” …

    Have a great day,
    Diane

    • Hi Diane,

      Thanks for your questions.

      – The founder is https://kitze.io/ and they have a team of 5 people at the moment.

      – Will forward the feature requests to the Sizzy!

      The roadmap will be adapted to the feedback of customers. The team has some great developments coming up for Sizzy 🙂

  • Heiko says:

    Question: for app development (React, Angular, Vue…) it would be great to hide the browser toolbars (top and bottom) to get a better feeling and the correct screen estate. Is this possible with Sizzy? I tried the demo, but couldn’t find a corresponding setting

  • David says:

    Is there a portable version? If not, do you have plans for a portable version?

  • Martin says:

    Can we simulate Safari on iOS? Usually there are problems with Safari where it won’t autoplay videos, backgrounds etc. If it can that would be amazing.

  • jacopo says:

    Hi, this not simulate the real device engine Just the viewport… Right?

    • Hi Jacopo,

      Thanks for your question. Yes that is correct, it simulates the device frame, the UI for the browser & OS, and you can completely customize everything.

      Hope that helps 🙂

  • Rachel says:

    Can you clarify what this means:
    “License for 1 device”

    What is the difference between “License for 1 device” and your regular “1 seat”.
    Am I allowed to switch devices I use, and how often?

  • Sascha says:

    Just a question – will i need the chrome extension? on the google chrome store some people reported its not working?

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