LCP
Largest Contentful Paint
5.4s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Remove Unused CSS and JavaScript
How to optimize baidu.com
Remove Unused CSS and JavaScript
High Impact+15 points estimated
Why It Matters
Unused code blocks rendering for 1.05 seconds and wastes 114 KiB of bandwidth affecting both LCP and FCP.
How to Fix
Remove 99.6% unused CSS from inline styles and external stylesheets. Split JavaScript bundles to load only required code per page. Defer non-critical JavaScript modules until after page load using dynamic imports.
0Needs Improvement
What This Score Means
A score of 69 falls in the "Needs Improvement" range (50-89). While it is better than poor (0-49), you should aim for 90+ to provide an optimal user experience and maximize SEO benefits.
This site is slower than approximately 35% of similar sites. The main issues affecting performance are image optimization, JavaScript execution time, and layout stability.
Addressing these issues could improve your conversion rate by 15-20% and boost your search engine rankings.
Core Web Vitals Analysis
INP
Interaction to Next Paint
40ms
Good
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.01
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This website has poor performance issues with a score of 69/100, primarily due to extremely slow content loading. The biggest problem is the Largest Contentful Paint taking 5.4 seconds, which is far above the recommended 2.5 seconds, caused by oversized and unoptimized images including the main Baidu logo. The site is loading 88 KiB of unused JavaScript and 26 KiB of unused CSS, while also suffering from render-blocking resources that delay initial page painting by over 1 second. Quick wins include optimizing images to modern formats like WebP, removing unused code, and implementing proper caching strategies, which could collectively improve the performance score by 25+ points and dramatically enhance user experience.
Other Optimization Recommendations
Optimize Image Delivery and Compression
High Impact+12 points estimatedWhy It Matters:
Images waste 79 KiB and delay LCP by 150ms, with the main logo being 92% larger than needed.
How to Fix:
Convert the Baidu logo and profile images to WebP format for 30-50% size reduction. Resize images to match their display dimensions (logo from 550x176 to 312x100). Add fetchpriority='high' to the LCP logo image to prioritize its loading.
Implement Modern JavaScript Build Process
Medium Impact+8 points estimatedWhy It Matters:
Legacy JavaScript polyfills add 43 KiB of unnecessary code that modern browsers don't need.
How to Fix:
Configure build tools to target modern browsers and avoid transpiling ES6+ features like Array.from, Object.assign, and async/await. Use differential serving to send modern code to modern browsers and legacy code only to older ones. Remove Babel transforms for features supported by 95%+ of users.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Optimize Third-Party Resource Caching
Poor cache policies on external scripts force repeated downloads, slowing repeat visits by 248 KiB.
Reduce Unused JavaScript Payload
330 KiB of unused JavaScript delays LCP by 400ms and blocks the main thread for 2 seconds.
Optimize Font Loading Strategy
Font loading delays are causing 650ms delay to First Contentful Paint and creating invisible text periods.
Add Image Dimensions Attributes
Missing width and height attributes on images cause layout shifts that hurt user experience and CLS scores.