55 / 100
Should Fix:
Reduce server response time
In our test, your server responded in 2 seconds.
There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
Show how to fix
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 26 blocking script resources and 13 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
- https://c0.wp.com/c/5.2.4/wp-includes/js/jquery/jquery.js
- https://c0.wp.com/c/5.2.4/wp-includes/js/jquery/jquery-migrate.min.js
- https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js
- https://cdnjs.cloudflare.com/ajax/libs/jqueryui-touch-punch/0.2.3/jquery.ui.touch-punch.min.js
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/js/slick.js?ver=5.2.4
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/js/shop-frontend.js?ver=5.2.4
- https://ventomiennam.com/wp-content/plugins/contact-form-7/includes/js/scripts.js?ver=5.1.4
- https://s0.wp.com/wp-content/js/devicepx-jetpack.js?ver=201943
- https://sp.zalo.me/plugins/sdk.js?ver=5.2.4
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/jquery-blockui/jquery.blockUI.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/add-to-cart.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/js-cookie/js.cookie.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/woocommerce.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/cart-fragments.min.js
- https://ventomiennam.com/wp-content/themes/flatsome/inc/extensions/flatsome-live-search/flatsome-live-search.js?ver=3.8.4
- https://c0.wp.com/c/5.2.4/wp-includes/js/hoverIntent.min.js
- https://ventomiennam.com/wp-content/themes/flatsome/assets/js/flatsome.js?ver=3.8.4
- https://ventomiennam.com/wp-content/themes/flatsome/assets/js/woocommerce.js?ver=3.8.4
- https://c0.wp.com/c/5.2.4/wp-includes/js/wp-embed.min.js
- https://c0.wp.com/c/5.2.4/wp-includes/js/underscore.min.js
- https://c0.wp.com/c/5.2.4/wp-includes/js/wp-util.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/add-to-cart-variation.min.js
- https://ventomiennam.com/wp-content/plugins/quick-call-button/assets/js/drag-quick-call-button.js?ver=1.2.1
- https://c0.wp.com/c/5.2.4/wp-includes/js/zxcvbn-async.min.js
- https://c0.wp.com/c/5.2.4/wp-admin/js/password-strength-meter.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/password-strength-meter.min.js
Optimize CSS Delivery of the following:
- https://c0.wp.com/c/5.2.4/wp-includes/css/dist/block-library/style.min.css
- https://c0.wp.com/p/woocommerce/3.7.1/packages/woocommerce-blocks/build/style.css
- https://ventomiennam.com/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=5.1.4
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/css/shop-frontend.css?ver=5.2.4
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/css/slick.css?ver=5.2.4
- https://ventomiennam.com/wp-content/themes/flatsome/assets/css/fl-icons.css?ver=3.3
- https://ventomiennam.com/wp-content/themes/flatsome/assets/css/flatsome.css?ver=3.8.4
- https://ventomiennam.com/wp-content/themes/flatsome/assets/css/flatsome-shop.css?ver=3.8.4
- https://ventomiennam.com/wp-content/themes/flatsome-child/style.css?ver=3.0
- https://ventomiennam.com/wp-content/plugins/prdctfltr/includes/css/style.min.css?ver=7.0.8
- https://c0.wp.com/p/jetpack/7.8/css/jetpack.css
- https://ventomiennam.com/wp-content/plugins/quick-call-button/assets/css/quick-call-button.css?ver=1.2.1
- https://fonts.googleapis.com/css?family=Lato:regular,700%7CLato:regular,400%7CLato:regular,700%7CDancing+Script:regular,400
Show how to fix
Consider Fixing:
Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 1.5KiB (59% reduction).
- Compressing https://stc.sp.zdn.vn/sdk-server-1.0.0.js could save 1.5KiB (59% reduction).
Show how to fix
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
- https://stc.sp.zdn.vn/chatwidget/images/main_sprites.1.0.7.png (expiration not specified)
- https://stc.sp.zdn.vn/chatwidget/images/stick_zalo.png (expiration not specified)
- https://stc.sp.zdn.vn/chatwidget/main-1.3.8.css (expiration not specified)
- https://stc.sp.zdn.vn/chatwidget/main-1.3.8.js (expiration not specified)
- https://stc.sp.zdn.vn/sdk-server-1.0.0.js (expiration not specified)
- https://ventomiennam.com/wp-json/contact-form-7/v1/contact-forms/15/refill (expiration not specified)
- https://stc.za.zaloapp.com/v3/za.js?18191 (5 minutes)
- https://www.google-analytics.com/analytics.js (2 hours)
Show how to fix
Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 333B (30% reduction).
- Minifying https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/css/shop-frontend.css?ver=5.2.4 could save 183B (20% reduction) after compression.
- Minifying https://ventomiennam.com/wp-content/themes/flatsome-child/style.css?ver=3.0 could save 150B (71% reduction) after compression.
Show how to fix
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 137B (14% reduction).
- Minifying https://sp.zalo.me/plugins/chat-widget?position=null&oaid=1666325082607241670&welcomemessage=Chat%20v%E1%BB%9Bi%20ch%C3%BAng%20t%C3%B4i&autopopup=1&width=400&height=500&style=2&id=6a7792cc-72bd-4188-a93f-efeed1a36104&domain=ventomiennam.com&android=true&ios=false could save 137B (14% reduction) after compression.
Show how to fix
Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1.3KiB (16% reduction).
- Minifying https://ventomiennam.com/wp-content/plugins/contact-form-7/includes/js/scripts.js?ver=5.1.4 could save 653B (17% reduction) after compression.
- Minifying https://stc.sp.zdn.vn/sdk-server-1.0.0.js could save 271B (11% reduction).
- Minifying https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/js/shop-frontend.js?ver=5.2.4 could save 146B (23% reduction) after compression.
- Minifying https://cdnjs.cloudflare.com/ajax/libs/jqueryui-touch-punch/0.2.3/jquery.ui.touch-punch.min.js could save 130B (22% reduction) after compression.
- Minifying https://c0.wp.com/p/woocommerce/3.7.1/assets/js/js-cookie/js.cookie.min.js could save 115B (12% reduction) after compression.
Show how to fix
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 10.8KiB (38% reduction).
- Compressing https://stc.sp.zdn.vn/chatwidget/images/main_sprites.1.0.7.png could save 7.3KiB (38% reduction).
- Compressing https://stc.sp.zdn.vn/chatwidget/images/stick_zalo.png could save 3.5KiB (37% reduction).
Show how to fix
Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
- Only about 16% of the final above-the-fold content could be rendered with the full HTML response.
- Click to see the screenshot with only the HTML response: snapshot:40
Show how to fix
1 Passed Rules
100 / 100
5 Passed Rules
Show details
Avoid plugins
Your page does not appear to use plugins, which would prevent content from being usable on many platforms. Learn more about the importance of avoiding plugins.
Configure the viewport
Your page specifies a viewport matching the device's size, which allows it to render properly on all devices. Learn more about configuring viewports.
Size content to viewport
The contents of your page fit within the viewport. Learn more about sizing content to the viewport.
Size tap targets appropriately
All of your page's links/buttons are large enough for a user to easily tap on a touchscreen. Learn more about sizing tap targets appropriately.
Use legible font sizes
The text on your page is legible. Learn more about using legible font sizes.
82 / 100
Should Fix:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 26 blocking script resources and 13 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
- https://c0.wp.com/c/5.2.4/wp-includes/js/jquery/jquery.js
- https://c0.wp.com/c/5.2.4/wp-includes/js/jquery/jquery-migrate.min.js
- https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js
- https://cdnjs.cloudflare.com/ajax/libs/jqueryui-touch-punch/0.2.3/jquery.ui.touch-punch.min.js
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/js/slick.js?ver=5.2.4
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/js/shop-frontend.js?ver=5.2.4
- https://ventomiennam.com/wp-content/plugins/contact-form-7/includes/js/scripts.js?ver=5.1.4
- https://s0.wp.com/wp-content/js/devicepx-jetpack.js?ver=201943
- https://sp.zalo.me/plugins/sdk.js?ver=5.2.4
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/jquery-blockui/jquery.blockUI.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/add-to-cart.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/js-cookie/js.cookie.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/woocommerce.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/cart-fragments.min.js
- https://ventomiennam.com/wp-content/themes/flatsome/inc/extensions/flatsome-live-search/flatsome-live-search.js?ver=3.8.4
- https://c0.wp.com/c/5.2.4/wp-includes/js/hoverIntent.min.js
- https://ventomiennam.com/wp-content/themes/flatsome/assets/js/flatsome.js?ver=3.8.4
- https://ventomiennam.com/wp-content/themes/flatsome/assets/js/woocommerce.js?ver=3.8.4
- https://c0.wp.com/c/5.2.4/wp-includes/js/wp-embed.min.js
- https://c0.wp.com/c/5.2.4/wp-includes/js/underscore.min.js
- https://c0.wp.com/c/5.2.4/wp-includes/js/wp-util.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/add-to-cart-variation.min.js
- https://ventomiennam.com/wp-content/plugins/quick-call-button/assets/js/drag-quick-call-button.js?ver=1.2.1
- https://c0.wp.com/c/5.2.4/wp-includes/js/zxcvbn-async.min.js
- https://c0.wp.com/c/5.2.4/wp-admin/js/password-strength-meter.min.js
- https://c0.wp.com/p/woocommerce/3.7.1/assets/js/frontend/password-strength-meter.min.js
Optimize CSS Delivery of the following:
- https://c0.wp.com/c/5.2.4/wp-includes/css/dist/block-library/style.min.css
- https://c0.wp.com/p/woocommerce/3.7.1/packages/woocommerce-blocks/build/style.css
- https://ventomiennam.com/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=5.1.4
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/css/shop-frontend.css?ver=5.2.4
- https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/css/slick.css?ver=5.2.4
- https://ventomiennam.com/wp-content/themes/flatsome/assets/css/fl-icons.css?ver=3.3
- https://ventomiennam.com/wp-content/themes/flatsome/assets/css/flatsome.css?ver=3.8.4
- https://ventomiennam.com/wp-content/themes/flatsome/assets/css/flatsome-shop.css?ver=3.8.4
- https://ventomiennam.com/wp-content/themes/flatsome-child/style.css?ver=3.0
- https://ventomiennam.com/wp-content/plugins/prdctfltr/includes/css/style.min.css?ver=7.0.8
- https://c0.wp.com/p/jetpack/7.8/css/jetpack.css
- https://ventomiennam.com/wp-content/plugins/quick-call-button/assets/css/quick-call-button.css?ver=1.2.1
- https://fonts.googleapis.com/css?family=Lato:regular,700%7CLato:regular,400%7CLato:regular,700%7CDancing+Script:regular,400
Show how to fix
Consider Fixing:
Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 1.5KiB (59% reduction).
- Compressing https://stc.sp.zdn.vn/sdk-server-1.0.0.js could save 1.5KiB (59% reduction).
Show how to fix
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
- https://stc.sp.zdn.vn/chatwidget/images/main_sprites.1.0.7.png (expiration not specified)
- https://stc.sp.zdn.vn/chatwidget/images/stick_zalo.png (expiration not specified)
- https://stc.sp.zdn.vn/chatwidget/main-1.3.8.css (expiration not specified)
- https://stc.sp.zdn.vn/chatwidget/main-1.3.8.js (expiration not specified)
- https://stc.sp.zdn.vn/sdk-server-1.0.0.js (expiration not specified)
- https://ventomiennam.com/wp-json/contact-form-7/v1/contact-forms/15/refill (expiration not specified)
- https://stc.za.zaloapp.com/v3/za.js?18191 (5 minutes)
- https://www.google-analytics.com/analytics.js (2 hours)
Show how to fix
Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 333B (30% reduction).
- Minifying https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/css/shop-frontend.css?ver=5.2.4 could save 183B (20% reduction) after compression.
- Minifying https://ventomiennam.com/wp-content/themes/flatsome-child/style.css?ver=3.0 could save 150B (71% reduction) after compression.
Show how to fix
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 137B (14% reduction).
- Minifying https://sp.zalo.me/plugins/chat-widget?position=null&oaid=1666325082607241670&welcomemessage=Chat%20v%E1%BB%9Bi%20ch%C3%BAng%20t%C3%B4i&autopopup=1&width=400&height=500&style=2&id=8ad53e50-f334-4de8-9518-6a77a5cf0c6b&domain=ventomiennam.com&android=false&ios=false could save 137B (14% reduction) after compression.
Show how to fix
Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1.3KiB (16% reduction).
- Minifying https://ventomiennam.com/wp-content/plugins/contact-form-7/includes/js/scripts.js?ver=5.1.4 could save 653B (17% reduction) after compression.
- Minifying https://stc.sp.zdn.vn/sdk-server-1.0.0.js could save 271B (11% reduction).
- Minifying https://ventomiennam.com/wp-content/plugins/woocommerce-colororimage-variation-select/js/shop-frontend.js?ver=5.2.4 could save 146B (23% reduction) after compression.
- Minifying https://cdnjs.cloudflare.com/ajax/libs/jqueryui-touch-punch/0.2.3/jquery.ui.touch-punch.min.js could save 130B (22% reduction) after compression.
- Minifying https://c0.wp.com/p/woocommerce/3.7.1/assets/js/js-cookie/js.cookie.min.js could save 115B (12% reduction) after compression.
Show how to fix
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 10.8KiB (38% reduction).
- Compressing https://stc.sp.zdn.vn/chatwidget/images/main_sprites.1.0.7.png could save 7.3KiB (38% reduction).
- Compressing https://stc.sp.zdn.vn/chatwidget/images/stick_zalo.png could save 3.5KiB (37% reduction).
Show how to fix
Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
- Only about 8% of the final above-the-fold content could be rendered with the full HTML response.
- Click to see the screenshot with only the HTML response: snapshot:39
Show how to fix
2 Passed Rules
* The results are cached for 30s. If you have made changes to your page, please wait for 30s before re-running the test.