Runs locally
Responsive Breakpoint Preview
See HTML at phone, tablet and desktop widths.
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The sample is framed at preset widths inside a sandboxed iframe.
About this tool
Check a component or an email snippet at phone size without opening developer tools. Paste the HTML and it is rendered in an isolated frame 375 pixels wide.
How to use it
- 01
Paste the HTML snippet.
- 02
Press Preview.
- 03
Check the layout at phone width.
FAQ
Frequently asked questions
Which width is used?
375 px, the CSS width of many popular phones.
Can I include CSS?
Yes. Put a <style> block inside the HTML you paste.