LCP
Largest Contentful Paint
14.2s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Remove Unused JavaScript Code
How to optimize synthesia.io
Remove Unused JavaScript Code
High Impact+25 points estimated
Why It Matters
924 KiB of unused JavaScript is delaying LCP by 2.5 seconds and blocking user interactions.
How to Fix
In Webflow Designer, audit all custom code blocks and remove unused scripts. Replace heavy reCAPTCHA implementation with Webflow's native form protection. Use dynamic imports for non-critical JavaScript and defer third-party scripts like analytics until after page load.
0Poor
What This Score Means
A score of 33 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
228ms
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
This Webflow site has severe performance issues with a score of 33/100. The biggest problem is massive JavaScript bloat, particularly from reCAPTCHA scripts that are loading 924 KiB of unused code and taking over 3 seconds to execute, which is devastating your Largest Contentful Paint (14.2 seconds) and Time to Interactive (20.5 seconds). Additionally, third-party scripts from HubSpot, Facebook, and analytics tools are using outdated JavaScript polyfills that waste another 36 KiB and cause forced layout shifts. Removing unused JavaScript, optimizing third-party scripts, and implementing proper caching could easily improve your score by 40+ points and dramatically speed up page loading.
Other Optimization Recommendations
Optimize Image Delivery Performance
High Impact+18 points estimatedWhy It Matters:
Oversized images waste 301 KiB and delay LCP by 50ms with poor responsive sizing.
How to Fix:
In Webflow Asset Manager, replace all images with properly sized versions matching display dimensions. Enable Webflow's automatic WebP conversion in Site Settings. Set explicit width/height attributes in the Designer for all image elements to prevent layout shifts.
Implement Efficient Cache Headers
Medium Impact+12 points estimatedWhy It Matters:
Poor caching wastes 398 KiB on repeat visits and delays LCP by 2.6 seconds.
How to Fix:
Configure longer cache lifetimes for static assets in Webflow hosting settings. Move to Webflow's Enterprise plan for advanced caching controls. Implement preconnect hints for critical third-party domains like Optimizely and SegmentStream in the Head code section.
Keep Your Site Fast After Optimization
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Related Performance Analyses
More Webflow Speed Tests
Webflow Performance Resources
Implement Efficient Cache Headers
Poor caching wastes 398 KiB on repeat visits and delays LCP by 2.6 seconds.
Optimize Image Delivery Performance
Oversized images waste 301 KiB and delay LCP by 50ms with poor responsive sizing.
Fix Layout Shifts from Body Element
A major layout shift (0.087 score) from the body element is causing your poor CLS score of 0.111.
Remove Unused JavaScript Aggressively
924KB of unused JavaScript is blocking rendering and delaying LCP by 400ms, with reCAPTCHA being the worst offender.