Tech12h.com Site Title

Tài liệu học online, giải bài tập sgk và nhiều thủ thuật tin học hữu ích

Tech12h.com Meta Description

Hướng dẫn giải bài tập SGK, tổng hợp những đề thi mẫu giúp học sinh học và thi tốt hơn. Cùng với những kiến thức tin học hữu ích

Tech12h.com Test Results

tech12h.com Mobile Usability: 100/100


tech12h.com Mobile Speed: 53/100

Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking script resources and 5 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://tech12h.com/sites/default/files/js/js_vDrW3Ry_4gtSYaLsh77lWhWjIC6ml2QNkcfvfP5CVFs.js
...
Optimize CSS Delivery of the following:
https://tech12h.com/sites/default/files/css/css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css
...
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 303.2KiB (73% reduction).
Compressing https://tech12h.com/sites/default/files/css/css_aGtigNCeCqiv9yTx2Ch6h7pmFoesIEOekpiE7oNKJsc.css could save 112.4KiB (84% reduction).
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 90.9KiB (65% reduction).
Compressing https://tech12h.com/sites/default/files/styles/home150x120/public/autumn.jpg?itok=WJPhrzYf could save 30.1KiB (67% reduction).
...
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://www.googletagmanager.com/gtag/js?id=UA-63309547-1 (15 minutes)
...
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 26.2KiB (22% reduction).
Minifying https://tech12h.com/sites/default/files/js/js_vDrW3Ry_4gtSYaLsh77lWhWjIC6ml2QNkcfvfP5CVFs.js could save 16.2KiB (17% reduction).
...
Reduce server response time
In our test, your server responded in 0.28 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.

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