Voca.vn Site Title

VOCA.VN - HỆ THỐNG HỌC TIẾNG ANH THÔNG MINH

Voca.vn Meta Description

VOCA là hệ thống dạy và học tiếng Anh trực tuyến thông minh được xây dựng với sứ mệnh giúp học sinh, sinh viên xóa bỏ rào cản về Anh ngữ. VOCA được xây dựng từ 2013, hiện nay VOCA đã có hơn một triệu thành viên học tiếng Anh online mỗi ngày trên hệ thống.

Voca.vn Test Results

voca.vn Mobile Usability: 100/100


voca.vn Mobile Speed: 57/100

Quick overview:
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 409.5KiB (72% reduction).
Compressing https://www.voca.vn/assets/assets-v2/img/pham-thi-hong.jpg could save 109.9KiB (82% reduction).
...
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 6 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://www.voca.vn/assets/assets-v2/js/lang-vi.js?n=1
...
Optimize CSS Delivery of the following:
https://www.voca.vn/assets/assets-v2/css/voca-main.css?n=1
...
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 28.6KiB (72% reduction).
Compressing https://www.voca.vn/assets/assets-v2/img/icon.svg could save 15.2KiB (68% reduction).
...
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 13.2KiB (37% reduction).
Minifying https://www.voca.vn/assets/assets-v2/js/voca-application.js?n=1518148724 could save 6.8KiB (42% reduction) after compression.
...
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 9.5KiB (22% reduction).
Minifying https://www.voca.vn/assets/assets-v2/css/voca-application.css could save 7KiB (21% reduction) after compression.
...
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 2.9KiB (18% reduction).
Minifying http://www.voca.vn/ could save 2.6KiB (19% reduction) after compression.
...

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Last Tested: