Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity.
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading.
Issue founded on: https://seorch.eu/
Date: 19. January 2021 Website: http://ncov-dashboard.herokuapp.com/ User Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36 Permalink: https://seorch.eu/seo-check/ncov-dashboard-herokuapp-com-2021-01-19-09-77-26.html
Page Speed Analysis (Desktop)
The page loads in 7.5 seconds
Details:
Solutions:
Reduce JavaScript execution time
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Affected files and functions: http://ncov-dashboard.herokuapp.com/static/assets/js/fetch-data.js https://cdnjs.cloudflare.com/ajax/libs/plotly.js/1.54.6/plotly.min.js http://ncov-dashboard.herokuapp.com/ Unattributable http://ncov-dashboard.herokuapp.com/static/assets/js/plugins/jquery/dist/jquery.min.js
Enable text compression
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes.
Affected files and functions: http://ncov-dashboard.herokuapp.com/static/assets/css/style.css?v=1.1.0 http://ncov-dashboard.herokuapp.com/daily_report http://ncov-dashboard.herokuapp.com/static/assets/js/plugins/jquery/dist/jquery.min.js http://ncov-dashboard.herokuapp.com/static/assets/js/plugins/bootstrap/dist/js/bootstrap.bundle.min.js http://ncov-dashboard.herokuapp.com/cases http://ncov-dashboard.herokuapp.com/realtime_growth http://ncov-dashboard.herokuapp.com/static/assets/js/sorttable.js http://ncov-dashboard.herokuapp.com/ http://ncov-dashboard.herokuapp.com/daily_growth http://ncov-dashboard.herokuapp.com/static/assets/js/fetch-data.js http://ncov-dashboard.herokuapp.com/static/assets/js/argon-dashboard.min.js?v=1.1.0
Minify CSS
Minifying CSS files can reduce network payload sizes.
Affected files and functions: http://ncov-dashboard.herokuapp.com/static/assets/css/style.css?v=1.1.0
Serve images in next-gen formats
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Affected files and functions: http://ncov-dashboard.herokuapp.com/static/assets/img/brand/white.png http://ncov-dashboard.herokuapp.com/static/assets/img/brand/blue.png
Remove unused JavaScript
Remove unused JavaScript to reduce bytes consumed by network activity.
Affected files and functions: https://cdnjs.cloudflare.com/ajax/libs/plotly.js/1.54.6/plotly.min.js http://ncov-dashboard.herokuapp.com/static/assets/js/plugins/bootstrap/dist/js/bootstrap.bundle.min.js http://ncov-dashboard.herokuapp.com/static/assets/js/plugins/jquery/dist/jquery.min.js
Remove unused CSS
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity.
Affected files and functions: http://ncov-dashboard.herokuapp.com/static/assets/css/style.css?v=1.1.0 /! Font Awesome Free 5.15.2 by @fontawesome - https://fontawesome.com * License - https://fonta...
Defer offscreen images
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive.
Affected files and functions: http://ncov-dashboard.herokuapp.com/static/assets/img/brand/white.png
Properly size images
Serve images that are appropriately-sized to save cellular data and improve load time.
Affected files and functions: http://ncov-dashboard.herokuapp.com/static/assets/img/brand/blue.png
Cumulative Layout Shift
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Affected files and functions: 1.
Minimize main-thread work
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Affected files and functions: Script Evaluation Parse HTML & CSS Style & Layout Garbage Collection Rendering Script Parsing & Compilation
Reduce initial server response time
Keep the server response time for the main document short because all other requests depend on it.
Affected files and functions: http://ncov-dashboard.herokuapp.com/
Reduce the impact of third-party code
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading.