Speed ​​Checker - Check Website Speed ​​Online

Analyze performance and Core Web Vitals of the website

📊 Explanation of indicators

LCP (Largest Contentful Paint):

Maximum element loading time. Good: <2.5s

FID (First Input Delay):

First interaction delay. Good: <100ms

CLS (Cumulative Layout Shift):

Layout displacement. Good: <0.1

FCP (First Contentful Paint):

Time to first display of content. Good: <1.8s

Free Website Speed ​​Test - Page Speed ​​Test & Core Web Vitals Checker

Tan Phat Digital's free online website speed test tool uses the official Google PageSpeed ​​Insights API. Analyze performance on both Mobile and Desktop with Performance Score from 0-100. Fully measure Core Web Vitals: LCP (Largest Contentful Paint), FID (First Input Delay), CLS (Cumulative Layout Shift). Additional indicators: FCP (First Contentful Paint), TTFB (Time to First Byte), Speed ​​Index. Display results visually with colors: green (good), yellow (needs improvement), red (poor). Detailed explanation of each indicator and standard threshold. Useful for SEO specialists, web developers, and business owners who want to improve website performance.

Outstanding features

Use the official Google PageSpeed ​​Insights API
Separate analysis for Mobile and Desktop
Performance Score from 0-100 with visual gauge
Full Core Web Vitals: LCP, FID, CLS
LCP - Largest Contentful Paint (main content load time)
FID - First Input Delay (first interaction delay)
CLS - Cumulative Layout Shift
FCP - First Contentful Paint (first impression time)
TTFB - Time to First Byte (server response time)
Speed ​​Index (visual content display speed)
Visual colors: green/yellow/red according to Google threshold
Detailed explanation of each indicator
Standard threshold for each metric
Tabs switch Mobile/Desktop easily
Completely free, unlimited

Why is website speed important for SEO and Business?

Website speed is Google's official ranking factor from 2021 through Core Web Vitals. According to Google research: 53% of mobile users leave the site if it loads > 3 seconds. Each additional second of delay reduces conversion rate by 7%. Bounce rate increased by 32% when page load time from 1s to 3s. Amazon detects that every 100ms slow = 1% revenue reduction. Core Web Vitals affect: Search rankings (Google uses them as a ranking signal). User experience (users frustrated with slow site). Conversion rate (fast site = more sales). Brand perception (slow site = unprofessional). Mobile-first indexing (Google prioritizes mobile performance). Checking and optimizing speed is a MUST DO for every website serious about SEO and business.

Benefits when used

  • •Know the exact Performance score of your website
  • •Identify issues that need improvement
  • •Compare Mobile vs Desktop performance
  • •Monitor progress after optimizing
  • •Data from Google - the most reliable source
  • •Free - no need to register an account
  • •The results are more detailed than many other tools

How to check website speed

  1. 1Enter the website URL to check (with or without https://)
  2. 2Press the
  3. 3button or Enter to start
  4. 4Wait for the system to analyze (30-60 seconds for each strategy)
  5. 5View overall Performance Score (0-100)
  6. 6Check Core Web Vitals: LCP, FID, CLS
  7. 7See other indices: FCP, TTFB, Speed ​​Index
  8. 8Switch tab to compare Mobile vs Desktop
  9. 9Read the explanation of the indicators below
  10. 10Improved yellow/red indicators

Cooperate immediately with Mavis Digital

We not only design websites, but also help businesses build strong digital brands. Providing comprehensive website design services from design to SEO optimization. Please contact Mavis Digital immediately to create breakthrough, effective and sustainable technology solutions for your business in Ho Chi Minh.

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