WEBVTT

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Google retired its standalone Mobile-Friendly Test, but mobile layout problems still matter.

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I’ll show you this tool’s seven-part diagnostic, useful cases, the sample score

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and fixes, its main features and limits, and the device checks to

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make next.

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This tool assigns a zero-to-one-hundred product score from seven weighted H-T-M-L and

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C-S-S checks, then requests a separate three-hundred-ninety by eight-hundred-forty-four phone preview. These

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are directional diagnostics, not Google eligibility criteria and not a replacement for

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testing real devices.

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Use it before a launch, after a responsive redesign, while investigating horizontal

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scrolling or tiny text, when a template lacks a viewport tag, when

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large desktop images reach phones, or as a quick comparison between representative

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page types. Test the exact page, not only the homepage.

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Paste one complete public U-R-L, clear the anti-abuse check, and select "Test

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page". The analysis reads the initial H-T-M-L and as many as four

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stylesheets. The screenshot is a separate metered render, so it can be

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unavailable while the seven-check score still completes normally.

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The scorer-generated example has a viewport tag that disables zoom, a linked

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stylesheet the static sample cannot inspect, and a nine-hundred-sixty-pixel fixed-width wrapper. Those

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signals demonstrate accessibility, evidence availability, and likely overflow problems without pretending that

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a screenshot was rendered.

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The example scores seventy-eight, which falls in "Mostly mobile-friendly". The gauge is

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a summary, not a pass certificate. Begin with the warnings and information

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rows that explain where points were lost, then use the phone preview

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and real-device testing to decide whether users experience the same issue.

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The viewport warning keeps twenty-four of thirty points because the page sets

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device width but blocks pinch zoom. Remove the zoom restriction. The fixed-width

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warning keeps nine of fifteen because one element exceeds four hundred pixels.

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Replace the rigid width with a flexible width and an appropriate maximum.

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Responsive C-S-S receives an information result because the example names a stylesheet

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that was not actually fetched. Information is half credit for incomplete inspection,

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not proof of failure and not a pass. A live run can

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inspect as many as four linked stylesheets for media rules.

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The seven checks cover viewport configuration, responsive C-S-S, hard-coded widths, small font

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declarations, responsive image markup, H-T-M-L document weight, and incompatible object or embed

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content. The weights total one hundred, with viewport worth thirty because every

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other mobile behavior depends on the browser using the device width.

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Scores from ninety through one hundred are green; seventy through eighty-nine are

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mostly mobile-friendly; fifty through sixty-nine need work; and lower scores are red.

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Pass, warning, error, and information badges provide the actual evidence. A high

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total can still hide one important issue, so review every row.

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The main features are the weighted seven-check score, explicit thresholds and point

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values, stylesheet inspection, a separate iPhone-sized headless-browser preview, calm screenshot-unavailable states that

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do not alter the score, and private baseline export and import for

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comparing a later run. Each output remains tied to one tested U-R-L.

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The score does not execute JavaScript, so runtime-applied styles can be missed.

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Media-rule presence does not prove correct layout. The tool tests one public

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page, limits stylesheet and byte acquisition, and one screenshot represents only one

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browser and viewport. It does not measure Core Web Vitals, real tap-target

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spacing, every orientation, authentication state, or assistive technology.

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Save the tested U-R-L, time, total, each check, acquisition notes, and phone

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preview state. Fix the responsible template and assets, rerun the score, and

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compare a baseline. Then test representative devices and browsers for zoom, orientation,

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overflow, touch targets, forms, menus, keyboard access, screen readers, loading, and real-user

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performance.

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Repair the viewport, flexible layout, fonts, images, weight, and legacy content that

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the evidence supports. Then retest the page and verify real interactions, overflow,

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tap targets, accessibility, and performance on representative phones before calling the experience

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ready.

