Even on otherwise identical devices and browsers, a website can behave differently depending on network conditions, color schemes, locales, and more. You can model the behavior of your website under such different conditions using Simulations. You can also check how your website looks when printed, or with JavaScript disabled.

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Here's an explanation of what each option does.


Test how your website performs under different network conditions, such as slower (or non-existent) connections.


Switch between a mouse pointer and a touch cursor. The touch cursor only works on devices that support it.

Touch cursor

Default cursor on mobile devices. Clicking and dragging in the viewport moves the page.

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Mouse pointer

Default cursor on desktop devices. Clicking and dragging in the viewport selects the text/images on that page.

Switching to this type of cursor in a mobile device makes the cursor have "desktop-like" behavior.

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Color Scheme

Choose whether to use the dark or light theme. By default, Sizzy chooses the theme based on your computer's current settings.

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Software Keyboard

Toggle the software keyboard to test how your website looks when taking user input.

The software keyboard can be set to Auto, Show, or Hide.

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Simulate different languages to test internationalization and localization support.

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Test how your website loads on browsers that have Javascript disabled.

Print Stylesheets

Check how your website will look when a visitor tries to print it.

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Updated 08 Dec 2021
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