Mobile Friendly Test Online — Free Mobile Friendly Test Tool
CodexFuse Team · 2026-11-02T01:16:44.309Z · 8 min read min read
Run a free mobile friendly test, fix viewport, tap targets and font failures in priority order, and retest until your page works properly on phones.
A mobile friendly test checks whether a website works properly on a phone: readable text, buttons you can actually tap, content that fits the screen, and pages that load without frustration. If your site fails that check, most visitors will leave before they ever read your offer.
This guide shows how to run a free mobile friendly test with CodexFuse's online tool, what each result means, and how to fix the failures in priority order. You will also see a worked example, from a failing score of 62 to a passing 91, so you can repeat the same steps on your own site.
What is a mobile friendly test?
A mobile friendly test is a check of how a web page behaves on a small screen, covering viewport settings, tap target size, font legibility, content width, media handling and load speed. It answers one practical question: can a visitor on a phone read, tap and complete the task without pinching, zooming or guessing?
That matters because Google now indexes the mobile version of a page first, and most discovery traffic arrives on phones. A polished desktop page can still be unusable on a phone.
How do I run a mobile friendly test?
To run a mobile friendly test, open the free tool, enter the full page URL, click Test URL, choose a device such as iPhone, Pixel or Tablet, and review the verdict, the score out of 100 and the usability checklist. Fix the failed checks first, then retest the same URL on the same device to confirm the improvement.
CodexFuse's mobile friendly test follows that flow, with nothing to install.
- Enter the URL: type the full page address into the URL field, for example https://example.com, and press Enter or click Test URL.
- Try a demo first if you prefer: pick one of the Quick Test demo sites to see a sample result before testing your own page.
- Choose a device: select iPhone, Pixel or Tablet to preview the page as visitors on that class of device would see it.
- Read the verdict and score: check whether the page is judged mobile friendly and note the score out of 100.
- Work through the checklist: review each Mobile Usability Criteria item — viewport, touch targets, font legibility, content width, HTML5 media and load speed.
- Save the result: use Copy Summary to share the findings with a developer, or Export JSON to keep a structured audit record.
Test the page your visitors actually land on, not just your homepage. A homepage can pass while a product page, checkout page or contact form fails, and those are the pages where a failure costs a sale or an enquiry.
What does the mobile friendly test check?
The test checks six practical areas, each mapping to a real visitor problem rather than an abstract score.
| Check | What passes | What fails in practice |
|---|---|---|
| Viewport | Page sets a mobile viewport and scales to the device width | Desktop-width layout squeezed onto a phone screen |
| Touch targets | Buttons and links are large enough and spaced apart | Tiny, crowded links that trigger the wrong tap |
| Font legibility | Body text is readable without zooming | 11px body copy that forces pinch-to-zoom |
| Content width | Text, images and tables fit the screen | Horizontal scrolling to read a paragraph or see a price |
| HTML5 media | Video and interactive content play on mobile browsers | Legacy plugins or formats phones cannot render |
| Load speed | Page becomes usable quickly on a mobile connection | Heavy images and scripts that stall the first view |
Short on time? Fix in this order: viewport, content width, touch targets, font size, then load speed.
Worked example: from a score of 62 to 91
This fictional example shows the full workflow: test, fix in priority order, retest. The numbers are illustrative.
The starting point. Maya runs a small online bakery, Harbour Bakes, and most orders come from Instagram links opened on phones. She tests her menu page on the Pixel preview and scores 62, with a not-friendly verdict.
What failed. The checklist shows four failures: no usable mobile viewport, so the desktop layout is squeezed; tap targets of around 32px on the order buttons, too small for reliable tapping; body text at 11px, which forces zooming; and a wide price table that pushes content off the right edge of the screen.
The fixes, in order. Her developer adds a proper mobile viewport, restyles the price table to stack on small screens, enlarges order buttons to at least 48px tall with clear spacing, and raises body text to a readable size.
The retest. On the same Pixel preview the score rises to 91 and the verdict flips to mobile friendly, leaving only one advisory: compress a large hero image to improve load speed.
- Test one page at a time: a single score never describes a whole site, so test your top landing, product and contact pages separately.
- Fix failures before chasing points: a failed tap target costs orders; a few extra score points on an already usable page do not.
- Retest after every change: one fix can break another layout, and only a fresh test on the same device proves the improvement.
- Keep the JSON export: it gives you a before-and-after record to show a developer, a client or a future version of yourself.
Move your site to CodexFuse and let a fully managed team fix the viewport, layout and speed issues for you — on pay-as-you-go credits, with no subscription to manage.
Get Started with CodexFuseWhat are the honest limits of this mobile friendly test?
This mobile friendly test is a simulated check, not Google's official test or a Search Console report. Treat it as a fast usability audit, not a ranking guarantee.
The tool also cannot test pages behind a login, checkout journeys, or every real phone. Its previews — iPhone 15 Pro, Google Pixel 8 and iPad Mini — cover common screen classes, but they are not a substitute for opening the page on a real device, especially for forms and payments.
Use it as a first pass, then confirm important pages with real-device checks and, where you have access, Search Console reporting.
Do not redesign your whole site because of one low score. Fix the failed checklist items one by one and retest after each change — most mobile failures come from a missing viewport, an overflowing element or undersized buttons, not from a bad design.
How does CodexFuse help fix mobile problems?
CodexFuse is an all-in-one, fully managed IT platform on credits: pay as you go, instead of managing separate hosting, email, security and backup subscriptions. Mobile fixes often span hosting, theme settings and performance, not one line of code.
A practical workflow looks like this. First, run the test and export the JSON summary. Second, move the site to CodexFuse's managed hosting, where the team applies the viewport, theme and caching fixes. Third, retest the same pages and keep the new export as your baseline.
That workflow also covers the follow-on work: backups before layout changes, security and email kept running while the site changes, and a retest after any theme update. For related checks, see a meta viewport generator and a local SEO check.
Website speed: what to do first, second and third and Image SEO checker: audit image SEO free — both pair well with a mobile audit, since heavy images hurt phones first.
Frequently Asked Questions
Is the CodexFuse mobile friendly test free?
Yes. The tool page states it is free with unlimited use: enter a URL, choose a device, and copy the summary or export JSON.
What score counts as mobile friendly?
Read the verdict first. A high score with a failed tap-target check can still be unusable; a lower score with all core checks passing is usually fine.
Does this replace Google's mobile test?
No. It is a simulated first audit, not an official Google verdict, and it does not replace Search Console reporting or real-device testing.
Can it test a page behind a login?
No. It tests a public URL, so logged-in pages and checkout flows cannot be audited this way. Test those manually on a real phone.
Why did my desktop site fail on mobile?
Typically: no mobile viewport, fixed-width elements overflowing the screen, mouse-sized buttons, or text too small to read without zooming. Fix those first and retest.
What should I do after a failing result?
Fix failed items in priority order, one at a time, and retest the same URL on the same device. Keep the JSON export before and after.
Test it, fix it, then keep it mobile friendly
Run the mobile friendly test on your most important page today, fix the failed checks in priority order, and retest until the verdict flips. Then move the site to CodexFuse if you want that work handled for you: bring hosting, email, security and backups onto one fully managed platform on credits, and retest to confirm the result.
