alphabooks.vn Website Information

Daily Unique Visits: 878

Daily Page Views: 1,756

Income Per Day: $5

Estimated Value: $1,200

This website is located in Viet Nam and is using following IP address 210.245.8.139. See the complete list of popular websites hosted in Viet Nam.

alphabooks.vn is registered under .VN top-level domain. Please check other sites in .VN zone.

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and is probably hosted by FPT-AS-AP The Corporation for Financing & Promoting Technology, VN. See the full list of other websites hosted by FPT-AS-AP The Corporation for Financing & Promoting Technology, VN.

The highest website alphabooks.vn position in Alexa rank database was 87255 and the lowest rank position was 999604. Current position of alphabooks.vn in Alexa rank database is 816334.

Desktop speed score of alphabooks.vn (21/100) is better than the results of 4.47% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of alphabooks.vn (59/100) is better than the results of 2.69% of other sites and means that the page is not mobile-friendly.

Mobile speed score of alphabooks.vn (20/100) is better than the results of 4.48% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

alphabooks.vn Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

alphabooks.vn whois

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alphabooks.vn desktop page speed rank

Last tested: 2015-12-21

Desktop Speed Bad

21/100

alphabooks.vn Desktop Speed Test Quick Summary

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priority - 98Enable compression

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priority - 72Leverage browser caching

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alphabooks.vn Desktop Resource Breakdown

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priority - 112Leverage browser caching

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priority - 103Optimize images

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priority - 98Enable 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 961.2KiB (74% reduction).

priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 12 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

http://alphabooks.vn/style/global_style.css
http://alphabooks.vn/style/style.css
http://alphabooks.vn/htmlstyle/style/htmlstyle.css

priority - 1Minify 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 8.6KiB (2% reduction).

priority - 0Minify 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 2.7KiB (7% reduction).

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priority - 0Reduce server response time

priority - 0Minify 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 958B (8% reduction).

Minifying http://alphabooks.vn/ could save 958B (8% reduction) after compression.

alphabooks.vn Mobile Resource Breakdown

Total Resources	205
Number of Hosts	6
Static Resources	191
JavaScript Resources	27
CSS Resources	8

alphabooks.vn mobile page usability

Last tested: 2019-10-29

Mobile Usability Bad

59/100

alphabooks.vn Mobile Usability Test Quick Summary

priority - 40Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

Thư viện của tôi renders only 4 pixels tall (12 CSS pixels).

Tên truy cập: and 1 others render only 4 pixels tall (12 CSS pixels).

Đăng nhập and 1 others render only 4 pixels tall (11 CSS pixels).

ALPHA DIGITAL and 8 others render only 5 pixels tall (14 CSS pixels).

Patīk renders only 4 pixels tall (11 CSS pixels).

261 tūkst. renders only 4 pixels tall (11 CSS pixels).

Thứ 2, Ngày 21…ng 12 Năm 2015 renders only 4 pixels tall (12 CSS pixels).

ĐĂNG KÝ NHẬN TIN SÁCH and 4 others render only 6 pixels tall (16 CSS pixels).

TIN ALPHA BOOKS renders only 4 pixels tall (11 CSS pixels).

Tin khuyến mãi and 4 others render only 4 pixels tall (12 CSS pixels).

PHIÊN CHỢ SÁCH…NHẤT TRONG NĂM renders only 5 pixels tall (15 CSS pixels).

Hôm nay, 18/12…n từ 8h – 22h. renders only 4 pixels tall (12 CSS pixels).

Xem tiếp renders only 4 pixels tall (11 CSS pixels).

Giao lưu tác g…sao cho đúng” and 3 others render only 4 pixels tall (12 CSS pixels).

BEST - SELLER renders only 6 pixels tall (16 CSS pixels).

HÀ NỘI: and 1 others render only 5 pixels tall (15 CSS pixels).

(84-4) 3722 6234 and 1 others render only 5 pixels tall (15 CSS pixels).

VIDEO GIỚI THIỆU renders only 6 pixels tall (16 CSS pixels).

Alpha Books renders only 6 pixels tall (18 CSS pixels).

261.604 patīk renders only 4 pixels tall (12 CSS pixels).

Patīk šī lapa and 1 others render only 4 pixels tall (12 CSS pixels).

TRANG CHỦ renders only 4 pixels tall (13 CSS pixels).

ĐĂNG KÝ NHẬN TIN SÁCH and 6 others render only 4 pixels tall (13 CSS pixels).

Dành cho độc giả and 4 others render only 8 pixels tall (22 CSS pixels).

Xây dựng tủ sách doanh nghiệp and 24 others render only 5 pixels tall (14 CSS pixels).

Nhà sách: 39 N…: 08. 38243539 and 14 others render only 4 pixels tall (12 CSS pixels).

Cool math game…Game for Kids and 4 others render only 4 pixels tall (12 CSS pixels).

priority - 14Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="https://www.fa…com/alphabooks" class="facebook"></a> and 3 others are close to other tap targets.

The tap target <input type="text" name="fLogin_Username" class="input_text"> and 1 others are close to other tap targets.

The tap target <button type="submit" class="submit">Đăng nhập</button> and 1 others are close to other tap targets.

The tap target <a href="/imone-98/">Imone</a> and 1 others are close to other tap targets.

The tap target <a href="http://alphabooks.vn/" class="home">Trang chủ</a> is close to 2 other tap targets.

The tap target <html id="facebook" class="svg">FacebookPatīkP…kst.261 tūkst.</html> is close to 2 other tap targets.

The tap target <div class="pluginButton p…onDisconnected">Patīk</div> is close to 3 other tap targets.

The tap target <div class="pluginButton p…onDisconnected">Patīk</div> is close to 4 other tap targets.

The tap target <button type="submit"></button> is close to 4 other tap targets.

The tap target <li class="active"></li> is close to 1 other tap targets.

The tap target <li></li> and 3 others are close to other tap targets.

The tap target <a href="/tin-alpha-books-230/">Tin Alpha Books</a> is close to 1 other tap targets.

The tap target <a href="/tin-sach-235/">Tin sách</a> and 4 others are close to other tap targets.

The tap target <a href="http://alphabo…g-nam-3669.htm">PHIÊN CHỢ SÁCH…NHẤT TRONG NĂM</a> and 1 others are close to other tap targets.

The tap target <a href="http://alphabo…-vien-3668.htm">ĐẠI TIỆC SÁCH…CHO SINH VIÊN</a> and 3 others are close to other tap targets.

The tap target <li class="left"></li> and 3 others are close to other tap targets.

The tap target <a href="ymsgr:sendIM?alpha.books">Tư vấn Hà Nội</a> and 3 others are close to other tap targets.

The tap target <a href="/video-gioi-thieu-143/" class="name">Video giới thiệu</a> is close to 1 other tap targets.

The tap target <img src="https://sconte…97&oe=57142F88" class="_1drn _-s img"> is close to 1 other tap targets.

The tap target <a href="https://m.face…phabooks.vn%2F" class="_1drp _5lv6">Alpha Books</a> is close to 1 other tap targets.

The tap target <a href="/" class="home active">Trang chủ</a> is close to 2 other tap targets.

The tap target <a href="/ve-alphabooks-1/">Về Alphabooks</a> and 5 others are close to other tap targets.

The tap target <a href="/ve-alphabooks-1/">Thông tin liên hệ</a> and 4 others are close to other tap targets.

The tap target <a href="/lich-su-phat-trien-181/">Lịch sử phát triển</a> and 24 others are close to other tap targets.

The tap target <a href="/"></a> is close to 1 other tap targets.

The tap target <a href="http://viamv.com/">viamv.com</a> and 5 others are close to other tap targets.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

priority - 9Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 1,084 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

The element <img src="/template/imag…eplus-icon.png"> falls outside the viewport.
The element <img src="/template/images/zing-icon.png"> falls outside the viewport.
The element <img src="/template/imag…utube-icon.png"> falls outside the viewport.
The element <input type="text" name="fLogin_Username" class="input_text"> falls outside the viewport.
The element <input type="password" name="fLogin_Password" class="input_text"> falls outside the viewport.
The element <button type="button" class="submit">Đăng ký</button> falls outside the viewport.
The element <ul class="root">Trang chủ Alph…ids Kid's Game</ul> falls outside the viewport.
The element <span>Thứ 2, Ngày 21…ng 12 Năm 2015</span> falls outside the viewport.
The element <img src="http://alphabo…ite-01 (1).jpg" class="image_hotnews"> falls outside the viewport.
The element <li></li> falls outside the viewport.
The element <li></li> falls outside the viewport.
The element <a href="/dang-ky-nhan-tin-sach-109/">Đăng ký nhận tin sách</a> falls outside the viewport.
The element <a href="/video-gioi-thieu-143/" class="name">Video giới thiệu</a> falls outside the viewport.
The element <div id="videoaboutus0_video"> falls outside the viewport.
The element <div id="videoaboutus0_jwplayer_display"></div> falls outside the viewport.
The element <iframe src="//www.facebook…ow_border=true"> falls outside the viewport.
The element <a href="/tuyen-dung-94/">Tuyển dụng</a> falls outside the viewport.
The element <a href="/clip-gioi-thieu-sach-168/">Clip giới thiệu sách</a> falls outside the viewport.
The element <a href="/thong-tin-ban-quyen-169/">Thông tin bản quyền</a> falls outside the viewport.
The element <li class="fistitem1">Alpha Digital</li> falls outside the viewport.
The element <a href="/sach-tai-ban-trong-thang-142/">Sách tái bản trong tháng</a> falls outside the viewport.
The element <li class="fistitem1">Nhân vật sự kiện</li> falls outside the viewport.
The element <li class="lastitem">Góc nhìn CEO</li> falls outside the viewport.
The element <img src="http://alphabo…ogo-bottom.png"> falls outside the viewport.
The element <a href="http://graphictofu.com">Free Mockups</a> falls outside the viewport.
The element <a href="http://coolmathgames8.com">Cool math game…Game for Kids</a> falls outside the viewport.

alphabooks.vn HTML validation

Errors

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

Line: 11 Column: 2 - 52
"...tf-8" /> <meta http-equiv="content-language" content="vi" /> <met..."

Bad start tag in “img” in “head”.

Line: 134 Column: 11 - 2
"...<noscript><img height = '1' width = '1' style = 'display:none' src = 'https://www.facebook.com/tr?id=305029096243176&ev=PageView&noscript=1' /></nosc..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 134 Column: 11 - 2
"...<noscript><img height = '1' width = '1' style = 'display:none' src = 'https://www.facebook.com/tr?id=305029096243176&ev=PageView&noscript=1' /></nosc..." Line: 270 Column: 10 - 99
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/phone.png?1534989527317" /> ..." Line: 664 Column: 8 - 97
"..."> <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/phone.png?1534989527317" /> ..." Line: 1227 Column: 55 - 149
"...-maxwell"><img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/slider-re1.jpg?1534989527317" /></a> ..." Line: 1232 Column: 111 - 205
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"...ng-khoan"><img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/slider-re5.jpg?1534989527317" /></a> ..." Line: 7912 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-1.png?1534989527317" /> ..." Line: 7930 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-2.png?1534989527317" /> ..." Line: 7948 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-3.png?1534989527317" /> ..." Line: 7966 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-4.png?1534989527317" /> ..." Line: 7984 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-5.png?1534989527317" /> ..." Line: 8002 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-6.png?1534989527317" /> ..." Line: 8020 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-7.png?1534989527317" /> ..." Line: 8038 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-8.png?1534989527317" /> ..." Line: 8056 Column: 10 - 102
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-9.png?1534989527317" /> ..." Line: 8074 Column: 10 - 103
"... <img src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/client-10.png?1534989527317" /> ..." Line: 9570 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_1.jpg?1534989527317" /> ..." Line: 9577 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_2.jpg?1534989527317" /> ..." Line: 9584 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_3.jpg?1534989527317" /> ..." Line: 9595 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_4.jpg?1534989527317" /> ..." Line: 9602 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_5.jpg?1534989527317" /> ..." Line: 9609 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_6.jpg?1534989527317" /> ..." Line: 9620 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_7.jpg?1534989527317" /> ..." Line: 9627 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_8.jpg?1534989527317" /> ..." Line: 9634 Column: 9 - 123
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_9.jpg?1534989527317" /> ..." Line: 9645 Column: 9 - 124
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_10.jpg?1534989527317" /> ..." Line: 9652 Column: 9 - 124
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_11.jpg?1534989527317" /> ..." Line: 9659 Column: 9 - 124
"...> <img class="img-responsive" src="//bizweb.dktcdn.net/100/197/269/themes/517883/assets/brand_12.jpg?1534989527317" /> ..."

Stray end tag “noscript”.

Line: 134 Column: 3 - 13
"...ript=1' /></noscript> <!--D..."

Stray end tag “head”.

Line: 194 Column: 1 - 7
"...t/css' /> </head> <body..."

Start tag “body” seen but an element of the same type was already open.

Line: 195 Column: 1 - 6
"...> </head> <body> <div..."

Bad value “tel:1900 2647” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.

Line: 272 Column: 41 - 64
"...tle_font"><a href="tel:1900 2647"><i cla..." Line: 666 Column: 39 - 62
"...tle_font"><a href="tel:1900 2647">1900 2..." Line: 10122 Column: 103 - 126
"... Hotline: <a href="tel:1900 2647">1900 2..."

Duplicate ID “product-actions-10119131”.

Line: 4356 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10119131" enctype="multipart/form-data"> ..."

Duplicate ID “product-actions-10086103”.

Line: 4600 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10086103" enctype="multipart/form-data"> ..."

Duplicate ID “product-actions-9271261”.

Line: 4722 Column: 4 - 118
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-9271261" enctype="multipart/form-data"> ..."

Duplicate ID “product-actions-12082241”.

Line: 4966 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-12082241" enctype="multipart/form-data"> ..."

Duplicate ID “product-actions-10119615”.

Line: 5088 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10119615" enctype="multipart/form-data"> ..."

Duplicate ID “product-actions-10154663”.

Line: 5332 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10154663" enctype="multipart/form-data"> ..."

Duplicate ID “product-actions-10048041”.

Line: 5757 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10048041" enctype="multipart/form-data"> ..."

Duplicate ID “product-actions-11913200”.

Line: 6552 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-11913200" enctype="multipart/form-data"> ..."

No space between attributes.

Line: 6794 Column: - 211
"...rsuasion) - 6 "Vũ Khí" Gây Ảnh..." Line: 6816 Column: - 180
"...rsuasion) - 6 "Vũ Khí" Gây Ảnh..." Line: 7746 Column: - 212
"...rsuasion) - 6 "Vũ Khí" Gây Ảnh..." Line: 7752 Column: - 216
"...rsuasion) - 6 "Vũ Khí" Gây Ảnh..."

Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.

Line: 6794 Column: - 217
"...on) - 6 "Vũ Khí" Gây Ảnh Hưởng..." Line: 6794 Column: - 290
"...àng Đầu Sử Dụng"> </a> <..." Line: 6816 Column: - 186
"...on) - 6 "Vũ Khí" Gây Ảnh Hưởng..." Line: 6816 Column: - 259
"...àng Đầu Sử Dụng">Những Đòn Tâm..." Line: 7746 Column: - 218
"...on) - 6 "Vũ Khí" Gây Ảnh Hưởng..." Line: 7746 Column: - 291
"...àng Đầu Sử Dụng"> </a> ..." Line: 7752 Column: - 222
"...on) - 6 "Vũ Khí" Gây Ảnh Hưởng..." Line: 7752 Column: - 295
"...àng Đầu Sử Dụng">Những Đòn Tâm..."

Attribute “vũ” not allowed on element “img” at this point.

Attribute “khí"” not allowed on element “img” at this point.

Attribute “gây” not allowed on element “img” at this point.

Attribute “Ảnh” not allowed on element “img” at this point.

Attribute “hưởng” not allowed on element “img” at this point.

Attribute “hiệu” not allowed on element “img” at this point.

Attribute “quả” not allowed on element “img” at this point.

Attribute “Được” not allowed on element “img” at this point.

Attribute “các” not allowed on element “img” at this point.

Attribute “chuyên” not allowed on element “img” at this point.

Attribute “gia” not allowed on element “img” at this point.

Attribute “thuyết” not allowed on element “img” at this point.

Attribute “phục” not allowed on element “img” at this point.

Attribute “hàng” not allowed on element “img” at this point.

Attribute “Đầu” not allowed on element “img” at this point.

Attribute “sử” not allowed on element “img” at this point.

Attribute “dụng"” not allowed on element “img” at this point.

Attribute “vũ” not allowed on element “a” at this point.

Line: 6816 Column: 9 - 260
"...> <h3><a href="/nhung-don-tam-ly-trong-thuyet-phuc-influence-the-psychology-of-persuas" title="Những Đòn Tâm Lý Trong Thuyết Phục (Influence: The Psychology Of Persuasion) - 6 "Vũ Khí" Gây Ảnh Hưởng Hiệu Quả Được Các Chuyên Gia Thuyết Phục Hàng Đầu Sử Dụng">Những ..." Line: 7752 Column: 45 - 296
"...uct-name"><a href="/nhung-don-tam-ly-trong-thuyet-phuc-influence-the-psychology-of-persuas" title="Những Đòn Tâm Lý Trong Thuyết Phục (Influence: The Psychology Of Persuasion) - 6 "Vũ Khí" Gây Ảnh Hưởng Hiệu Quả Được Các Chuyên Gia Thuyết Phục Hàng Đầu Sử Dụng">Những ..."

Attribute “khí"” not allowed on element “a” at this point.

Attribute “gây” not allowed on element “a” at this point.

Attribute “Ảnh” not allowed on element “a” at this point.

Attribute “hưởng” not allowed on element “a” at this point.

Attribute “hiệu” not allowed on element “a” at this point.

Attribute “quả” not allowed on element “a” at this point.

Attribute “Được” not allowed on element “a” at this point.

Attribute “các” not allowed on element “a” at this point.

Attribute “chuyên” not allowed on element “a” at this point.

Attribute “gia” not allowed on element “a” at this point.

Attribute “thuyết” not allowed on element “a” at this point.

Attribute “phục” not allowed on element “a” at this point.

Attribute “hàng” not allowed on element “a” at this point.

Attribute “Đầu” not allowed on element “a” at this point.

Attribute “sử” not allowed on element “a” at this point.

Attribute “dụng"” not allowed on element “a” at this point.

Duplicate ID “product-actions-11706827”.

Line: 6977 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-11706827" enctype="multipart/form-data"> ..."

Bad value “https://fonts.googleapis.com/css?family=Unica+One:400|Roboto&subset=latin,vietnamese” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.

Line: 7335 Column: 30 - 161
"...ountdown"><link href='https://fonts.googleapis.com/css?family=Unica+One:400|Roboto&subset=latin,vietnamese' rel='stylesheet' type='text/css'> ..."

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 7338 Column: 149 - 155
"...xt/css' /><style>.count..."

Bad character “3” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.

Line: 8064 Column: - 194
"... quá đẳng cấp <3</p> </..."

Duplicate ID “fb-root”.

Line: 9775 Column: 8 - 25
"..."> <div id="fb-root"></div>..." Line: 10153 Column: 3 - 20
"...frame"> <div id="fb-root"> ..."

Bad value “” for attribute “action” on element “form”: Must be non-empty.

Line: 9798 Column: 6 - 51
"...12"> <form action="" method="post" id="newsletter"> ..."

Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)

Line: 10162 Column: 1 - 7
"...> </div> <style> #fac..."

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

Line: 47 Column: 2 - 85
"...oks.vn"> <meta name="viewport" content="width=device-width,user-scalable=no,initial-scale=1"> <!--..."

The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.

Line: 164 Column: - 8
"...lại --> <!-------------------..." Line: 164 Column: - 54
"...--------------- Không thể liên..."

The first occurrence of ID “product-actions-10119131” was here.

Line: 4148 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10119131" enctype="multipart/form-data"> ..."

The first occurrence of ID “product-actions-10086103” was here.

Line: 4089 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10086103" enctype="multipart/form-data"> ..."

The first occurrence of ID “product-actions-9271261” was here.

Line: 4270 Column: 4 - 118
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-9271261" enctype="multipart/form-data"> ..."

The first occurrence of ID “product-actions-12082241” was here.

Line: 1893 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-12082241" enctype="multipart/form-data"> ..."

The first occurrence of ID “product-actions-10119615” was here.

Line: 3660 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10119615" enctype="multipart/form-data"> ..."

The first occurrence of ID “product-actions-10154663” was here.

Line: 2928 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10154663" enctype="multipart/form-data"> ..."

The first occurrence of ID “product-actions-10048041” was here.

Line: 3723 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-10048041" enctype="multipart/form-data"> ..."

The first occurrence of ID “product-actions-11913200” was here.

Line: 2503 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-11913200" enctype="multipart/form-data"> ..."

Attribute “khí"” is not serializable as XML 1.0.

Line: 6794 Column: 5 - 291
"...img"> <img src="//bizweb.dktcdn.net/thumb/large/100/197/269/products/nhung-don-tam-ly-trong-thuyet-phuc.jpg?v=1528276009573" alt="Những Đòn Tâm Lý Trong Thuyết Phục (Influence: The Psychology Of Persuasion) - 6 "Vũ Khí" Gây Ảnh Hưởng Hiệu Quả Được Các Chuyên Gia Thuyết Phục Hàng Đầu Sử Dụng"> </..." Line: 6816 Column: 9 - 260
"...> <h3><a href="/nhung-don-tam-ly-trong-thuyet-phuc-influence-the-psychology-of-persuas" title="Những Đòn Tâm Lý Trong Thuyết Phục (Influence: The Psychology Of Persuasion) - 6 "Vũ Khí" Gây Ảnh Hưởng Hiệu Quả Được Các Chuyên Gia Thuyết Phục Hàng Đầu Sử Dụng">Những ..." Line: 7746 Column: 6 - 292
"...mg"> <img src="//bizweb.dktcdn.net/thumb/small/100/197/269/products/nhung-don-tam-ly-trong-thuyet-phuc.jpg?v=1528276009573" alt="Những Đòn Tâm Lý Trong Thuyết Phục (Influence: The Psychology Of Persuasion) - 6 "Vũ Khí" Gây Ảnh Hưởng Hiệu Quả Được Các Chuyên Gia Thuyết Phục Hàng Đầu Sử Dụng"> <..." Line: 7752 Column: 45 - 296
"...uct-name"><a href="/nhung-don-tam-ly-trong-thuyet-phuc-influence-the-psychology-of-persuas" title="Những Đòn Tâm Lý Trong Thuyết Phục (Influence: The Psychology Of Persuasion) - 6 "Vũ Khí" Gây Ảnh Hưởng Hiệu Quả Được Các Chuyên Gia Thuyết Phục Hàng Đầu Sử Dụng">Những ..."

Attribute “dụng"” is not serializable as XML 1.0.

The first occurrence of ID “product-actions-11706827” was here.

Line: 2806 Column: 4 - 119
"... </a> <form action="/cart/add" method="post" class="variants" id="product-actions-11706827" enctype="multipart/form-data"> ..."

The first occurrence of ID “fb-root” was here.

Line: 196 Column: 2 - 19
"...> <body> <div id="fb-root"></div>..." Line: 196 Column: 2 - 19
"...> <body> <div id="fb-root"></div>..."

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priority - 103Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1,005.4KiB (28% reduction).

priority - 98Enable 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 961.2KiB (74% reduction).

priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 12 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 1Minify 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 8.6KiB (2% reduction).

priority - 0Minify 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 2.7KiB (7% reduction).

priority - 0Reduce server response time

priority - 0Minify 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 958B (8% reduction).

alphabooks.vn Mobile Resource Breakdown

alphabooks.vn mobile page usability

alphabooks.vn Mobile Usability Test Quick Summary

priority - 40Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

priority - 14Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

priority - 9Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 1,084 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

alphabooks.vn HTML validation

Errors

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

Bad start tag in “img” in “head”.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Stray end tag “noscript”.

Stray end tag “head”.

Start tag “body” seen but an element of the same type was already open.

Bad character “3” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.