50+ Core Web Vitals & Speed Checks
Website speed test that shows exactly what to fix
Run a complete Core Web Vitals analysis on every page. Find oversized images, render blocking resources, and slow server responses. Get AI recommendations to improve your scores.
What We Test
What We Test
Every scan checks 50+ performance factors across Core Web Vitals and page speed metrics. Know exactly where to focus.
Every scan checks 50+ performance factors across Core Web Vitals and page speed metrics. Know exactly where to focus.
Issues We Catch
Real examples from real audits. Each issue comes with a clear explanation and fix.
High Priority
Slow LCP (4.2s)
Your homepage takes 4.2 seconds to show main content on mobile. Google wants under 2.5 seconds for a "Good" score.
AI Recommendation Hero image is 2.4MB. Compress and serve WebP format to reduce by 80%. Add fetchpriority="high" attribute.
High Priority
Slow LCP (4.2s)
Your homepage takes 4.2 seconds to show main content on mobile. Google wants under 2.5 seconds for a "Good" score.
AI Recommendation Hero image is 2.4MB. Compress and serve WebP format to reduce by 80%. Add fetchpriority="high" attribute.
High Priority
Slow LCP (4.2s)
Your homepage takes 4.2 seconds to show main content on mobile. Google wants under 2.5 seconds for a "Good" score.
AI Recommendation Hero image is 2.4MB. Compress and serve WebP format to reduce by 80%. Add fetchpriority="high" attribute.
High Priority
70 Oversized Images
Found 70 images larger than 100KB that could be compressed. Total potential savings: 12.3MB across your site.
AI Recommendation Export image list with optimal dimensions and format recommendations for each file.
High Priority
70 Oversized Images
Found 70 images larger than 100KB that could be compressed. Total potential savings: 12.3MB across your site.
AI Recommendation Export image list with optimal dimensions and format recommendations for each file.
High Priority
70 Oversized Images
Found 70 images larger than 100KB that could be compressed. Total potential savings: 12.3MB across your site.
AI Recommendation Export image list with optimal dimensions and format recommendations for each file.
Medium Priority
Layout Shift (CLS 0.25)
Content shifts after page load on 12 pages. Users may accidentally click the wrong elements.
AI Recommendation Add explicit width and height to 34 images and reserve space for 3 ad containers.
Medium Priority
Layout Shift (CLS 0.25)
Content shifts after page load on 12 pages. Users may accidentally click the wrong elements.
AI Recommendation Add explicit width and height to 34 images and reserve space for 3 ad containers.
Medium Priority
Layout Shift (CLS 0.25)
Content shifts after page load on 12 pages. Users may accidentally click the wrong elements.
AI Recommendation Add explicit width and height to 34 images and reserve space for 3 ad containers.
Fix content issues at scale with AI
Stop fixing content problems one page at a time. Jakka analyzes every page and generates improvements you can apply in bulk. Export to CSV, import to your CMS, done.
Page by Page Scores
LCP, FID, CLS, and INP scores for every page. Sort by worst performers to prioritize fixes.
Page by Page Scores
LCP, FID, CLS, and INP scores for every page. Sort by worst performers to prioritize fixes.
Historical Tracking
Monitor how your Core Web Vitals change after each deployment. Catch regressions early.
Historical Tracking
Monitor how your Core Web Vitals change after each deployment. Catch regressions early.
Prioritized Recommendations
AI suggests which fixes will have the biggest impact on your scores. Work smarter, not harder.
Prioritized Recommendations
AI suggests which fixes will have the biggest impact on your scores. Work smarter, not harder.
4.2s
LCP
Needs Improvement
4.2s
LCP
Needs Improvement
45ms
FID
Good
45ms
FID
Good
0.18
CLS
Needs Improvement
0.18
CLS
Needs Improvement
120ms
INP
Good
120ms
INP
Good
Core Web Vitals scoring for every page
See how each page performs against Google's thresholds. Track improvements over time. Know which pages need work before they hurt your rankings.
Page by Page Scores
LCP, FID, CLS, and INP scores for every page. Sort by worst performers to prioritize fixes.
Page by Page Scores
LCP, FID, CLS, and INP scores for every page. Sort by worst performers to prioritize fixes.
Historical Tracking
Monitor how your Core Web Vitals change after each deployment. Catch regressions early.
Historical Tracking
Monitor how your Core Web Vitals change after each deployment. Catch regressions early.
Prioritized Recommendations
AI suggests which fixes will have the biggest impact on your scores. Work smarter, not harder.
Prioritized Recommendations
AI suggests which fixes will have the biggest impact on your scores. Work smarter, not harder.
4.2s
LCP
Needs Improvement
4.2s
LCP
Needs Improvement
45ms
FID
Good
45ms
FID
Good
0.18
CLS
Needs Improvement
0.18
CLS
Needs Improvement
120ms
INP
Good
120ms
INP
Good
Fix content issues at scale with AI
Stop fixing content problems one page at a time. Jakka analyzes every page and generates improvements you can apply in bulk. Export to CSV, import to your CMS, done.
What Jakka Bot Does
Our crawler loads your pages like a real browser and measures every performance metric.
Run your free website speed test
Find every content quality issue on your site in minutes. No signup required.
Free plan available. No credit card required.
Real Browser Testing
Uses headless Chromium to load pages exactly like your users do. Measures actual render times, not estimates.
Real Browser Testing
Uses headless Chromium to load pages exactly like your users do. Measures actual render times, not estimates.
Image Analysis
Catalogs every image on your site. Reports size, format, dimensions, and compression potential for each one.
Image Analysis
Catalogs every image on your site. Reports size, format, dimensions, and compression potential for each one.
Resource Waterfall
Shows exactly when each file loads and what blocks rendering. Identifies third party scripts that slow you down.
Resource Waterfall
Shows exactly when each file loads and what blocks rendering. Identifies third party scripts that slow you down.
Mobile Testing
Tests on simulated mobile devices with throttled connections. See how your site performs on slower networks.
Mobile Testing
Tests on simulated mobile devices with throttled connections. See how your site performs on slower networks.
Server Analysis
Checks TTFB, compression, caching headers, and HTTP/2 support. Finds backend bottlenecks.
Server Analysis
Checks TTFB, compression, caching headers, and HTTP/2 support. Finds backend bottlenecks.
Layout Shift Detection
Records what causes content to jump around. Pinpoints exact elements causing CLS problems.
Layout Shift Detection
Records what causes content to jump around. Pinpoints exact elements causing CLS problems.
What Jakka Bot Does
Our crawler loads your pages like a real browser and measures every performance metric.
Real Browser Testing
Uses headless Chromium to load pages exactly like your users do. Measures actual render times, not estimates.
Real Browser Testing
Uses headless Chromium to load pages exactly like your users do. Measures actual render times, not estimates.
Image Analysis
Catalogs every image on your site. Reports size, format, dimensions, and compression potential for each one.
Image Analysis
Catalogs every image on your site. Reports size, format, dimensions, and compression potential for each one.
Resource Waterfall
Shows exactly when each file loads and what blocks rendering. Identifies third party scripts that slow you down.
Resource Waterfall
Shows exactly when each file loads and what blocks rendering. Identifies third party scripts that slow you down.
Mobile Testing
Tests on simulated mobile devices with throttled connections. See how your site performs on slower networks.
Mobile Testing
Tests on simulated mobile devices with throttled connections. See how your site performs on slower networks.
Server Analysis
Checks TTFB, compression, caching headers, and HTTP/2 support. Finds backend bottlenecks.
Server Analysis
Checks TTFB, compression, caching headers, and HTTP/2 support. Finds backend bottlenecks.
Layout Shift Detection
Records what causes content to jump around. Pinpoints exact elements causing CLS problems.
Layout Shift Detection
Records what causes content to jump around. Pinpoints exact elements causing CLS problems.
Run your free website speed test
Find every performance issue on your site in minutes. No signup required.
Free plan available. No credit card required.
