Enter a page URL to test its mobile-friendliness - viewport, responsive CSS, title length, image sizing and more.
The Mobile Friendly Test from Fist Host SEO Tools checks whether any webpage is ready for mobile visitors. It inspects the page source for the signals that matter - a proper viewport meta tag, responsive CSS with media queries, mobile-safe title length, declared image dimensions, character encoding and Flash usage - and produces a clear 0-100 score with a pass/warning/fail checklist.
How to use: 1) Enter the page URL. 2) Click test. 3) Read your score and verdict at the top. 4) Work through the checklist - each row explains what passed and what needs fixing.
Why it matters for SEO rankings: Google uses mobile-first indexing, meaning the mobile version of your page determines your rankings - and most searches now happen on phones. Pages that fail basic mobile checks rank lower, convert worse and bleed visitors to competitors whose sites just work on small screens.
Key benefits: 0-100 mobile score with plain-English verdict; 6 essential checks: viewport, charset, title, images, responsive CSS, Flash; specific fix guidance for every warning; instant results; 100% free with no signup.
Pro tips: Always use width=device-width in your viewport tag; add width and height to images to prevent layout shift; test your key landing pages, not just the homepage; this is a static source test - pair it with Google's Mobile-Friendly Test for a full visual audit.
Related tools: Page Speed Checker, Open Graph Checker, Heading Analyzer, Alt Text Checker.
FAQs: What does mobile friendly mean? A page that loads fast, fits small screens without horizontal scrolling, and has readable text and tappable buttons on phones. Does Google penalize non-mobile pages? With mobile-first indexing, the mobile experience directly determines rankings. Is a viewport tag enough? No - it is necessary but not sufficient; responsive CSS and proper sizing matter too, which is why this tool checks six signals. Can you test pages behind a login? No - only publicly accessible pages can be fetched and analyzed.
How mobile-friendliness drives traffic: With mobile-first indexing, Google ranks you on your mobile experience - period. The majority of searches in most niches now come from phones, so a page that fails mobile basics is invisible to most of its potential audience. Passing these checks is table stakes for competing in mobile search results.
What to fix first: Start with the viewport tag - without it nothing else matters. Then add responsive breakpoints, compress images, and shorten titles. Re-run the test after each change to watch your score climb toward 100.
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