Developer · Lifetime deal
Sizzy
Stop wasting time and speed up your development workflow with the perfect browser for web developers and designers.
Which Sizzy plan do you need?
Prices in USD, excluding tax.
| Plan A | Plan B | |
|---|---|---|
| Includes | Powerful Browser for Developers; Suitable for macOS, Windows, and Linux; Speed up website development; License for 1 device; 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 | Powerful Browser for Developers; Suitable for macOS, Windows, and Linux; Speed up website development; License for 2 devices; 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 |
What is Sizzy?
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.
Everything is in sync – Scroll, click, or navigate to a different url, and all the devices will follow.
Screenshot, the proper way – 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!
Universal Inspect Element – Inspecting devices one by one can be a chore, so Sizzy includes Universal Inspect Element which allows you to inspect all devices at once.
Realistic Devices – Sizzy has the most accurate device simulation. It simulates the device frame, the UI for the browser & OS, and you can completely customize everything.
Used By The Fastest Growing Companies Across The Globe
Stop wasting time and speed up your development workflow!!
Get a lifetime deal to Sizzy now!
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Add to your workspaceSizzy questions
Is the Sizzy lifetime deal still available?
No. The promotional lifetime deal offered through Dealify is archived. Sizzy (sizzy.co) continues as an active subscription product at $12/month (annual) or $15/month (monthly), with a 14-day free trial. A one-time lifetime license is also available directly from Sizzy for $499.
What is Sizzy?
Sizzy is a specialized browser for web developers and designers that displays your website on multiple device sizes simultaneously in a single window. Scrolling, clicking, and form inputs are synchronized across all devices, so you test responsive layouts without constantly resizing windows.
How is Sizzy different from Chrome DevTools device emulation?
Chrome DevTools emulates one viewport at a time inside a debug panel. Sizzy shows every device side-by-side with synchronized interactions, real device height simulation (accounting for browser and OS UI), multiple simultaneous user sessions, project workspaces, and a Photo Studio for creating mockups.
Which platforms does Sizzy support?
Sizzy is available for macOS, Windows, and Linux. It is built on Chromium, so your existing Chrome extensions work inside Sizzy without modification.
Can I test different user roles at the same time in Sizzy?
Yes. Sizzy's Session Manager lets you log into different accounts on different device panels simultaneously — for example, an admin on desktop, a regular user on mobile, and a guest on another device — all visible at once.
Does Sizzy have debugging tools beyond multi-device preview?
Yes. Sizzy includes a Unified Console (logs from all devices in one panel), Debug Styles (CSS visual debugger), an API Inspector for monitoring REST and GraphQL requests, and Network Simulation for testing on slow 3G or offline conditions.
Is Sizzy actively maintained?
Yes. As of 2026 Sizzy has shipped 738+ releases since 2018 and is actively maintained by the creator (Kitze). New devices are added to the library within weeks of launch, and bug fixes are released almost every week.
Often compared with
These are other tools in the same space, not deals on GrabLTD.
- Polypane
- Responsively App
- BrowserStack
- Chrome DevTools
- ScreenFly
