LCP
Largest Contentful Paint
9.9s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Eliminate Forced Reflows
How to optimize medium.com
Eliminate Forced Reflows
Medium Impact+8 points estimated
Why It Matters
reCAPTCHA scripts are causing 93ms of forced reflows that degrade rendering performance.
How to Fix
Batch DOM reads and writes to avoid layout thrashing. Cache geometric property values instead of repeatedly querying offsetWidth/offsetHeight. Consider loading reCAPTCHA asynchronously after critical content renders. Use CSS transforms instead of changing layout properties when possible.
0Poor
What This Score Means
A score of 44 falls in the "Poor" 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
237ms
Needs Improvement
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.00
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
Medium.com has severe performance issues with a critically low score of 44/100. The biggest problem is excessive JavaScript that takes nearly 10 seconds to load the first content and almost 12 seconds for the page to become interactive - far exceeding Google's recommended thresholds. The site is loading 690KB of unused JavaScript code, particularly from reCAPTCHA and main application files, which is causing massive delays in Core Web Vitals metrics. Removing unused JavaScript, optimizing script loading, and reducing the overall JavaScript payload could potentially improve load times by 4-5 seconds and dramatically enhance user experience.
Other Optimization Recommendations
Remove Unused JavaScript Code
High Impact+25 points estimatedWhy It Matters:
690 KiB of unused JavaScript is blocking page load and delaying LCP by 4.6 seconds.
How to Fix:
Remove or defer the reCAPTCHA script if not needed immediately (185KB unused). Split main.js bundle using code-splitting to load only critical components initially. Use dynamic imports for non-essential features. Audit Medium's main bundle for unused dependencies and tree-shake effectively.
Optimize JavaScript Execution Time
High Impact+18 points estimatedWhy It Matters:
3.2 seconds of JavaScript execution time is blocking the main thread and causing 500ms Total Blocking Time.
How to Fix:
Break up long-running script evaluation tasks using setTimeout or requestIdleCallback. Move heavy JavaScript processing to Web Workers where possible. Implement progressive loading for complex UI components. Optimize reCAPTCHA loading by using the explicit render method with callback.
Keep Your Site Fast After Optimization
Once your site is optimized, maintain that speed. Use DeployHQ for zero-downtime, automated deployments—so performance fixes and updates go live safely every time, without breaking your site.
Explore DeployHQ →Trusted by engineering teams shipping high-performance sites
Want to Analyze YOUR Website?
Get AI-powered performance insights with actionable fixes in 30 seconds
Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Optimize Critical Resource Loading
The 213ms network dependency chain delays page rendering and could impact Core Web Vitals.
Eliminate Render Blocking CSS
The advertising-big-data.css file blocks initial render for 159ms, potentially delaying FCP and LCP.
Optimize Image Compression and Sizing
The Global Map image wastes 187 KiB and could improve perceived load time and LCP performance.
Add Image Dimensions and Optimize
Missing width/height attributes cause layout shifts while oversized images waste 578KB of bandwidth and delay LCP by 550ms.