Mobile and responsiveness checker

Find out why your website breaks on mobile phones

More than half of all visitors arrive from a phone, and a site built on a computer almost always breaks there. Paste a URL, and the Klix server loads the page code to check for common issues. It looks for a missing viewport tag or one that blocks zoom, fixed pixel widths wider than a phone screen, large amounts of text under 14 pixels, images set to a width of more than 500 pixels, tables, and overall page weight. Every finding comes with a Hebrew explanation and a fix you can copy. Click target sizes cannot be measured from the code, so the tool reminds you to check them manually. The test requires logging into an account.

Frequently asked questions

Does this test how the site actually looks?

No. The tool reads the source code and identifies the signs that almost always cause issues. It does not render the page, so it is not a replacement for opening the site on a real phone.

Why is there horizontal scrolling on mobile?

It is almost always caused by a single element with a fixed pixel width that is wider than the screen. The tool locates the likely candidates.

Does the tool also read the site's CSS files?

No. It reads the HTML code of the page, including styles written directly on the elements. A fixed width defined in an external CSS file or a style tag will not be checked, so a clean result does not prove there is no problem.

What is sent to the server?

Only the URL you pasted. The server loads the public page and reads its code. Internal addresses like localhost are blocked, so a site running only on your computer cannot be tested here.

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