MobileCheck

Free · no sign-up · 54 devices

Free mobile-friendly test for iPhone and Android

See how your website reads on popular iPhones, Android phones and tablets. Get screenshots and a plain-English report: what's hard to read, why it matters and exactly how to fix it.

Start with one page — for example example.com or example.com/pricing.
Up to 4 more, checked on your narrowest and widest screens — see which problems are on every page.
Devices 5 selected
More devices (42)
iPhones
Android phones
Tablets
  Human check: waiting
Some sites block automated browsers (for example Cloudflare bot protection). If that happens we'll tell you. Reports are private links that are deleted automatically after 24 hours — please don't submit addresses that contain passwords or private tokens.

How it works

A real browser opens your page the way each phone does — same screen size, pixel density, touch input and user agent.

1. Enter a page

Paste any public address. We open it on the phones and tablets you choose, one by one.

2. We test it like a visitor

We hide cookie banners (never accepting them for you), scroll the whole page, open the menu, switch to dark mode and enlarge the text.

3. Get a clear report

A score, screenshots with every problem highlighted, and plain-English advice on how to fix it.

What we check

The things that make mobile visitors squint, zoom, mis-tap and leave.

Text size

Tiny and small text, measured as it actually appears on each screen.

Contrast

Text that fades into its background, checked against WCAG AA.

Tap targets

Buttons and links too small or too close together for a finger.

Layout

Sideways scrolling, cut-off and overlapping text, sticky bars that eat the screen.

Large text

Does the layout survive when people enlarge fonts in their phone settings?

Dark mode

Does text stay visible when the phone is in dark mode?

Mobile menu

We tap the ☰ button and check the menu that opens.

Speed

How fast the main content appears and whether the page jumps while loading.

Mobile Resilience Index 2026

Read the study and get the data

300 popular homepages, two phones, three conditions: normal, dark mode and 150% text.

52%
break when phone text is set to 150%
47%
have text smaller than 12px
39%
have text below WCAG AA contrast
30%
have tap targets that are too small

Tools, guides and reference

Test on a specific platform, fix what the report finds, or look up the numbers.

Test a website on iPhoneSafari's engine (WebKit) — why Chrome's iPhone mode isn't Safari. Test a website on AndroidGalaxy, Pixel and Xiaomi screens, pixel ratios and browser bars. Responsive design checkerEvery breakpoint from a 320px phone to a 1024px tablet. Google Mobile-Friendly Test alternativeGoogle retired its test in December 2023 — what to use now. Safari vs ChromeThe same iPhone screen in both engines, differences highlighted. What is my viewport?Your screen size, pixel ratio and media features, live. iPhone simulator for websitesTap through your site in a phone window. Mobile viewport sizesCSS sizes of 54 iPhones, Androids and tablets. Mobile Resilience IndexOur study: how top websites hold up with large text and dark mode. The viewport meta tagThe one line that makes a page mobile-friendly. Text too small to readFont sizes that work on phones, and how to set them. Tap targetsButtons and links that are easy to hit with a finger. Free design tools →Contrast checker, tap target checker, font size calculator, media queries, device mockups. All guides →Layout, text, touch, dark mode, large text and speed.

Free for everyone, for good

No paid plan, no sign-up, no trial and no daily limit. Ads on the site pay for the server, and everyone shares it in one fair line.

Questions

Is it really free?

Yes, completely — no paid plan, no sign-up and no daily limit. Ads on the site pay for the server. Everyone shares that server, so checks run one at a time: when it's busy you wait in line, and you can watch your place and come back to the report link later.

Are these real phones?

Real browser engines rather than physical phones: iPhones and iPads run on WebKit — the engine behind Safari — and Android devices on Chromium, the engine behind Chrome, each with the device's exact screen size, pixel density, touch input, user agent and browser bars. See testing on iPhone and viewport sizes.

Why did my site say it was blocked?

Some sites use bot protection (Cloudflare, captchas, DDoS-Guard). Real people pass it, but automated browsers get stopped. We detect this and tell you, so you know the report is about the protection screen, not your page.

Who can see my report?

Only people you share the link with — report links are long random codes that can't be guessed, and search engines are told not to index them. Every report and its screenshots are deleted automatically after 24 hours, and you can delete yours sooner.

Do you store my data?

The tool itself uses no cookies or analytics; ads on the site are served by Google, which may use cookies (with your consent where required). To keep the line fair we keep a one-way, daily-rotating hash of your IP address for 24 hours. See the privacy policy.

Can I check more than one page?

Yes. After entering the address, choose Add other pages of this site: we suggest pages from your menu and sitemap — one of each kind, such as a category, a product and an article — and you can add your own. Up to five pages per check. The report then shows a score for each page and which problems are on every page, which usually means the shared header, footer or style sheet: one fix helps everywhere.

Will the check put load on my site?

Barely: each device loads your page once, like a single visitor, and each extra page you add is loaded on two screens. We also cap how many times any one site can be checked per day.