rong-chang.com Website Information

Daily Unique Visits: 6,893

Daily Page Views: 34,465

Income Per Day: $86

Estimated Value: $51,600

This website is located in United States and is using following IP address 192.252.146.14. See the complete list of popular websites hosted in United States.

rong-chang.com is registered under .COM top-level domain. Please check other sites in .COM zone.

Website rong-chang.com is using the following name servers:

ns1.server293.com
ns2.server293.com

and is probably hosted by ICDSoft Ltd.. See the full list of other websites hosted by ICDSoft Ltd..

The highest website rong-chang.com position in Alexa rank database was 100943 and the lowest rank position was 199206. Current position of rong-chang.com in Alexa rank database is 197664.

Desktop speed score of rong-chang.com (84/100) is better than the results of 78.07% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of rong-chang.com (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.

Mobile speed score of rong-chang.com (69/100) is better than the results of 74.36% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

rong-chang.com 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.

rong-chang.com whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

Domain Name: RONG-CHANG.COM
Registry Domain ID: 27098031_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://networksolutions.com
Updated Date: 2020-09-21T17:47:48Z
Creation Date: 2000-05-15T16:38:28Z
Registry Expiry Date: 2022-05-15T16:38:28Z
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8003337680
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: ANTELOPE.EZOICNS.COM
Name Server: BULLFROG.EZOICNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2021-04-30T21:33:13Z

rong-chang.com server information

Servers Location

rong-chang.com desktop page speed rank

Last tested: 2016-11-21

Desktop Speed Medium

84/100

rong-chang.com Desktop Speed Test Quick Summary

priority - 6Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://www.google.com/coop/cse/brand?form=cse-search-box&lang=en

priority - 6Leverage 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:

http://www.rong-chang.com/images/android_tutor.png (expiration not specified)
http://www.rong-chang.com/images/eslbar1.gif (expiration not specified)
http://www.rong-chang.com/images/mike.jpg (expiration not specified)
http://www.rong-chang.com/images/proverb.gif (expiration not specified)
http://www.rong-chang.com/s.png (expiration not specified)
http://connect.facebook.net/en_US/sdk.js (20 minutes)
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https://www.google-analytics.com/analytics.js (2 hours)

priority - 3Optimize images

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Optimize the following images to reduce their size by 33.1KiB (54% reduction).

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priority - 2Enable compression

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Enable compression for the following resources to reduce their transfer size by 17.2KiB (67% reduction).

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priority - 0Minify HTML

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Minify HTML for the following resources to reduce their size by 528B (13% reduction).

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rong-chang.com Desktop Resource Breakdown

Total Resources	126
Number of Hosts	43
Static Resources	56
JavaScript Resources	26
CSS Resources	1

rong-chang.com mobile page speed rank

Last tested: 2016-11-21

Mobile Speed Medium

69/100

rong-chang.com Mobile Speed Test Quick Summary

priority - 24Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://www.google.com/coop/cse/brand?form=cse-search-box&lang=en

priority - 10Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://rong-chang.com/
http://www.rong-chang.com/mobile
http://www.rong-chang.com/mobile/

priority - 8Leverage 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:

http://www.rong-chang.com/images/android_tutor.png (expiration not specified)
http://www.rong-chang.com/images/eslbar1.gif (expiration not specified)
http://www.rong-chang.com/images/proverb.gif (expiration not specified)
http://www.rong-chang.com/s.png (expiration not specified)
http://connect.facebook.net/en_US/sdk.js (20 minutes)
http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js (60 minutes)
http://pagead2.googlesyndication.com/pagead/show_ads.js (60 minutes)
http://tag.navdmp.com/tm18475.js (60 minutes)
https://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)
https://usr.navdmp.com/usr?v=9&acc=18475&new=1 (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 2Enable 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 17.5KiB (68% reduction).

Compressing http://www.rong-chang.com/mobile/ could save 16.6KiB (69% reduction).
Compressing http://seg.sharethis.com/getSegment.php?purl=http%…dget&rnd=1479711833672 could save 897B (50% reduction).

priority - 1Optimize images

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

Optimize the following images to reduce their size by 6.5KiB (50% reduction).

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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 528B (13% reduction).

Minifying http://edge.sharethis.com/share5x/index.d7bc503430…44ee8e1eef2a2938a.html could save 528B (13% reduction) after compression.

rong-chang.com Mobile Resource Breakdown

Total Resources	124
Number of Hosts	44
Static Resources	49
JavaScript Resources	27
CSS Resources	3

rong-chang.com mobile page usability

Last tested: 2016-11-21

Mobile Usability Good

99/100

rong-chang.com Mobile Usability Test Quick Summary

priority - 0Size 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="/aclk?sa=l&ai=…n.de/index.htm" class="rhurl rhdefaultcolored">sprachenstadt-bonn.de</a> is close to 1 other tap targets.

The tap target <div id="abgc" class="abgc">AdChoices</div> is close to 2 other tap targets.

The tap target <a id="abgl" href="https://www.go…NfLo-8Yk5qQv2w" class="abgl">AdChoices</a> is close to 1 other tap targets.
The tap target <a id="abgl" href="https://www.go…NfLo-8Yk5qQv2w" class="abgl">AdChoices</a> is close to 1 other tap targets.
The tap target <a id="abgl" href="https://www.go…NfLo-8Yk5qQv2w" class="abgl">AdChoices</a> is close to 1 other tap targets.
The tap target <button type="submit"></button> is close to 1 other tap targets.

rong-chang.com HTML validation

Errors

Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.

Line: 2 Column: 1 - 6
"... <html> <hea..."

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

Line: 5 Column: 1 - 49
"...> <head> <meta http-equiv="Content-Language" content="en"> <met..."

Internal encoding declaration “windows-1252” disagrees with the actual encoding of the document (“utf-8”).

Line: 7 Column: 1 - 74
"...nt="en"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <met..."

The “center” element is obsolete. Use CSS instead.

Line: 24 Column: 1 - 8
"...auto;"> <center><scrip..." Line: 27 Column: 1 - 8
"...er><hr> <center><table..." Line: 210 Column: 1 - 8
"...li></ul> <center><scrip..." Line: 216 Column: 1 - 8
"..."4"><br> <center> <a h..." Line: 384 Column: 1 - 8
"..."4"><br> <center><a hre..." Line: 392 Column: 1 - 8
"...center> <center><img s..." Line: 396 Column: 1 - 8
".../script> <center><div c..." Line: 398 Column: 1 - 8
"...ter><br> <center><scrip..." Line: 400 Column: 1 - 8
"...ter><br> <center><b>tes..."

The “align” attribute on the “td” element is obsolete. Use CSS instead.

Line: 28 Column: 20 - 32
"...table><tr> <td align="center" valign="top"> <a hr..." Line: 34 Column: 6 - 35
"...<br> </td> <td align="center" valign="middle"> <a h..." Line: 50 Column: 6 - 32
"...ont> </td> <td align="center" valign="top"> <a hr..." Line: 61 Column: 12 - 42
"...table><tr> <td align="left" width="350" valign="top"> <scr..." Line: 74 Column: 6 - 30
"...ipt> </td> <td align="left" valign="top"><font ..."

The “valign” attribute on the “td” element is obsolete. Use CSS instead.

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

Line: 30 Column: 1 - 77
"..."_blank"> <img src="https://www.rong-chang.com/images/mike.jpg" width="80" height="80"><br> <..." Line: 52 Column: 1 - 86
"..."_blank"> <img src="https://www.rong-chang.com/images/android_tutor.png" width="80" height="80"><br> <..." Line: 58 Column: 1 - 81
".../center> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 150 Column: 1 - 81
"...kquote> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 192 Column: 1 - 81
"...kquote> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 214 Column: 1 - 81
"...ckquote> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 382 Column: 5 - 85
"...ont> <br><img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 392 Column: 9 - 94
"... <center><img src="https://www.rong-chang.com/images/qr_rong-chang.png" width="80" height="80"></cent..."

The “font” element is obsolete. Use CSS instead.

Line: 31 Column: 1 - 15
"..."80"><br> <font size="2">Talk t..." Line: 46 Column: 1 - 31
"...></a><br> <font color="#FF0000" size="7"><b>ESL..." Line: 47 Column: 1 - 22
"...font><br> <font color="#FF0000"> -- Fr..." Line: 53 Column: 1 - 15
"..."80"><br> <font size="2"> ..." Line: 53 Column: 49 - 52
"... </a><br> </td>..." Line: 74 Column: 31 - 45
"...ign="top"><font size="4"> <a h..." Line: 83 Column: 1 - 31
"...cript> <font size="6" color="#FF0000"><i><b>..." Line: 85 Column: 1 - 15
"...ont><br> <font size="4"> <ul>..." Line: 97 Column: 13 - 27
"...lockquote><font size="4"> <ul>..." Line: 153 Column: 1 - 31
"...4"><br> <font size="6" color="#FF0000"><i><b>..." Line: 155 Column: 13 - 27
"...lockquote><font size="4"> <ul>..." Line: 183 Column: 105 - 119
"...b></a> -- <font size="4">32 set..." Line: 184 Column: 170 - 1
"...</li></ul> <ul><l..." Line: 191 Column: 21 - 1
"...lockquote> <img s..." Line: 194 Column: 1 - 31
"..."4"><br> <font size="6" color="#FF0000"><i><b>..." Line: 196 Column: 13 - 27
"...lockquote><font size="4"> <ul>..." Line: 222 Column: 1 - 15
"...2"> <br> <font size="6"> <SCR..." Line: 291 Column: 1 - 15
"...cts:<br> <font size="4"> <SCR..." Line: 384 Column: 96 - 110
"...="_blank"><font size="5">CATESO..." Line: 408 Column: 21 - 1
"...div></div></body> </html..."

The element “input” must not appear as a descendant of the “a” element.

Line: 36 Column: 47 - 151
"...eflfast/"><input type="button" value="中文" style="color: #0000FF; font-size: 12pt; font-weight: bold"></a> <..." Line: 37 Column: 22 - 105
"...sten.htm"><input type="button" value="Listen & Speak" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 38 Column: 23 - 99
"...ding.htm"><input type="button" value="Reading" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 39 Column: 23 - 99
"...ting.htm"><input type="button" value="Writing" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 40 Column: 20 - 96
"...quiz.htm"><input type="button" value="Quizzes" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 41 Column: 23 - 99
"...mmar.htm"><input type="button" value="Grammar" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 42 Column: 26 - 105
"...lary.htm"><input type="button" value="Vocabulary" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 43 Column: 20 - 105
"...kids.htm"><input type="button" value="Children English" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 44 Column: 21 - 95
"...bout.htm"><input type="button" value="About" style="color: #0000FF; font-size: 13pt"></a> <..." Line: 45 Column: 54 - 126
"...rces.htm"><input type="button" value="..." style="color: #0000FF; font-size: 13pt"></a><b..."

End tag “a” violates nesting rules.

Line: 53 Column: 45 - 48
"...pps  </a><br> <..."

End tag “td” seen, but there were open elements.

Line: 54 Column: 1 - 5
"...;</a><br> </td> </tr..." Line: 95 Column: 8 - 12
"...> </font></td></tr><..."

Unclosed element “font”.

Line: 53 Column: 1 - 15
"..."80"><br> <font size="2"> ..." Line: 74 Column: 31 - 45
"...ign="top"><font size="4"> <a h..." Line: 183 Column: 105 - 119
"...b></a> -- <font size="4">32 set..." Line: 155 Column: 13 - 27
"...lockquote><font size="4"> <ul>..."

Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.

Line: 58 Column: 1 - 81
".../center> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 150 Column: 1 - 81
"...kquote> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 192 Column: 1 - 81
"...kquote> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..." Line: 214 Column: 1 - 81
"...ckquote> <img src="https://www.rong-chang.com/images/eslbar1.gif" width="100%" height="4"><br> ..."

The “width” attribute on the “td” element is obsolete. Use CSS instead.

Line: 61 Column: 12 - 42
"...table><tr> <td align="left" width="350" valign="top"> <scr..."

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

Line: 79 Column: 1 - 58
".../a><br> <form action="https://www.google.com" id="cse-search-box"> <div>..."

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

Line: 87 Column: 1 - 4
"...ize="4"> <ul><li><a..." Line: 89 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 91 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 93 Column: 1 - 4
".../ul><hr> <ul><li><a..." Line: 99 Column: 1 - 4
"...ize="4"> <ul><li><a..." Line: 101 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 103 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 105 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 107 Column: 1 - 4
"...li></ul> <ul><scrip..." Line: 117 Column: 1 - 4
"...pt></ul> <ul><li><a..." Line: 119 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 121 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 123 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 125 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 127 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 129 Column: 1 - 4
"...li></ul> <ul><scrip..." Line: 131 Column: 1 - 4
"...pt></ul> <ul><li><a..." Line: 133 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 135 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 137 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 139 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 141 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 143 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 145 Column: 1 - 4
"...li></ul> <ul><scrip..." Line: 157 Column: 1 - 4
"...ize="4"> <ul><li><a..." Line: 159 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 161 Column: 1 - 4
"...li></ul> <ul><scrip..." Line: 163 Column: 1 - 4
"...pt></ul> <ul><li><a..." Line: 165 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 167 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 169 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 171 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 173 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 175 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 177 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 179 Column: 1 - 4
"...li></ul> <ul><style..." Line: 181 Column: 1 - 4
"...pt></ul> <ul><li><a..." Line: 183 Column: 1 - 4
"...i></ul> <ul><li><a..." Line: 185 Column: 1 - 4
"...li></ul> <ul><li><a..." Line: 187 Column: 1 - 4
"...li></ul> <ul><li><a..."

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

Line: 91 Column: 147 - 150
"...</li></ul><hr> <ul>..."

End tag “li” seen, but there were open elements.

Line: 183 Column: 160 - 164
"...mmar forms</li></ul> ..."

End tag “blockquote” seen, but there were open elements.

Line: 189 Column: 8 - 20
"...> </font></blockquote> <im..."

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

Line: 196 Column: 1 - 12
"...></font> <blockquote><font ..."

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

Line: 216 Column: 1 - 8
"..."4"><br> <center> <a h..." Line: 392 Column: 1 - 8
"...center> <center><img s..." Line: 396 Column: 1 - 8
".../script> <center><div c..." Line: 398 Column: 1 - 8
"...ter><br> <center><scrip..." Line: 400 Column: 1 - 8
"...ter><br> <center><b>tes..."

End tag “center” seen, but there were open elements.

Line: 389 Column: 1 - 9
"...ns"><br> </center> <ce..."

Unclosed element “div”.

Line: 387 Column: 1 - 44
"...</script> <div class="sharethis-inline-share-buttons"><br> ..."

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

Line: 394 Column: 1 - 18
".../center> <div id="fb-root"></div>..."

End tag “div” seen, but there were open elements.

Line: 407 Column: 9 - 14
"... <br><br></div></div>..."

Stray end tag “div”.

Line: 407 Column: 15 - 20
"...<br></div></div></body..."

Warnings

The “language” attribute on the “script” element is obsolete. You can safely omit it.

Line: 224 Column: 1 - 30
"...ize="6"> <SCRIPT LANGUAGE="JavaScript"> <!--..." Line: 293 Column: 1 - 30
"...ize="4"> <SCRIPT LANGUAGE="JavaScript"> <!--..."

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 400 Column: 16 - 94
"...er><b>tesl<img src="https://www.rong-chang.com/s.png" alt="" border=0 width=14 height=14>eslfas..."

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Line: 2 Column: 1 - 6
"... <html> <hea..."

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rong-chang.com Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

rong-chang.com TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

RONG-CHANG.COM ESL: English as a Second Language - Free English learning resources

rong-chang.com Website Information

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rong-chang.com desktop page speed rank

rong-chang.com Desktop Speed Test Quick Summary

priority - 6Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

priority - 6Leverage 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:

priority - 3Optimize images

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

Optimize the following images to reduce their size by 33.1KiB (54% reduction).

priority - 2Enable 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 17.2KiB (67% reduction).

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 528B (13% reduction).

rong-chang.com Desktop Resource Breakdown

rong-chang.com mobile page speed rank

rong-chang.com Mobile Speed Test Quick Summary

priority - 24Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

priority - 10Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

priority - 8Leverage 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:

priority - 2Enable 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 17.5KiB (68% reduction).

priority - 1Optimize images

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

Optimize the following images to reduce their size by 6.5KiB (50% reduction).

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 528B (13% reduction).

rong-chang.com Mobile Resource Breakdown

rong-chang.com mobile page usability

rong-chang.com Mobile Usability Test Quick Summary

priority - 0Size 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.

rong-chang.com HTML validation

Errors

Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.

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

Internal encoding declaration “windows-1252” disagrees with the actual encoding of the document (“utf-8”).

The “center” element is obsolete. Use CSS instead.

The “align” attribute on the “td” element is obsolete. Use CSS instead.

The “valign” attribute on the “td” element is obsolete. Use CSS instead.

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

The “font” element is obsolete. Use CSS instead.

The element “input” must not appear as a descendant of the “a” element.

End tag “a” violates nesting rules.

End tag “td” seen, but there were open elements.

Unclosed element “font”.

Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.

The “width” attribute on the “td” element is obsolete. Use CSS instead.

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

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

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

End tag “li” seen, but there were open elements.

End tag “blockquote” seen, but there were open elements.

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

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

End tag “center” seen, but there were open elements.

Unclosed element “div”.

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

End tag “div” seen, but there were open elements.

Stray end tag “div”.

Warnings