4.5 sec in total
310 ms
4 sec
207 ms
Welcome to openings.chessbase.com homepage info - get ready to check Openings Chess Base best content for United States right away, or after learning these important things about openings.chessbase.com
Ready made chess opening repertoires from beginner to master level. Various learning fuctions to memorize openings.
Visit openings.chessbase.comWe analyzed Openings.chessbase.com page load time and found that the first response time was 310 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
openings.chessbase.com performance score
name
value
score
weighting
Value10.3 s
0/100
10%
Value16.2 s
0/100
25%
Value11.1 s
6/100
10%
Value1,560 ms
13/100
30%
Value0.023
100/100
15%
Value15.0 s
7/100
10%
310 ms
111 ms
104 ms
61 ms
94 ms
Our browser made a total of 80 requests to load all elements on the main page. We found that 86% of them (69 requests) were addressed to the original Openings.chessbase.com, 5% (4 requests) were made to Fonts.googleapis.com and 4% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Openings.chessbase.com.
Page size can be reduced by 3.0 MB (72%)
4.2 MB
1.2 MB
In fact, the total size of Openings.chessbase.com main page is 4.2 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Javascripts take 3.3 MB which makes up the majority of the site volume.
Potential reduce by 96.5 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 96.5 kB or 90% of the original size.
Potential reduce by 37.2 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Openings Chess Base needs image optimization as it can save up to 37.2 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 2.5 MB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 2.5 MB or 75% of the original size.
Potential reduce by 400.5 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Openings.chessbase.com needs all CSS files to be minified and compressed as it can save up to 400.5 kB or 89% of the original size.
Number of requests can be reduced by 41 (56%)
73
32
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Openings Chess Base. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
openings.chessbase.com
310 ms
111 ms
DetectSystem.js
104 ms
css
61 ms
css
94 ms
css
114 ms
css
130 ms
Chess.css
439 ms
OpeningsScores.css
229 ms
Openings.css
223 ms
Help.css
214 ms
Three.js
980 ms
AssimpJSONLoader.js
342 ms
all-classes.js
1573 ms
ext-theme-gray-all-rtl.css
222 ms
ext-theme-gray-all-rtl_01.css
450 ms
ext-theme-gray-all-rtl_02.css
114 ms
analytics.js
32 ms
OpeningsSplashSmall.png
444 ms
zN7GBFwfMP4uA6AR0HCoLQ.ttf
433 ms
RFda8w1V0eDZheqfcyQ4EInF5uFdDttMLvmWuJdhhgs.ttf
444 ms
help.html
386 ms
OpeningsScores.html
371 ms
loading.gif
141 ms
LightSquaresCoolerBrighterSofter.jpg
365 ms
DarkSquaresLessSatur.png
442 ms
MarginBrighter.jpg
235 ms
OrangeBrighterSoftBacklightLessSatur.jpg
124 ms
OpeningsLogo.png
131 ms
NewGame32.png
228 ms
Back32.png
239 ms
Forward32.png
244 ms
FlipBoard32.png
330 ms
Board2DSquares32.png
351 ms
arrow.gif
350 ms
DrillWhite32.png
345 ms
DrillBlack32.png
453 ms
StopDrill32.png
454 ms
RepeatDrill32.png
466 ms
MyMove32.png
467 ms
LoadWhite32.png
482 ms
LoadBlack32.png
555 ms
ToggleKibitzer32.png
556 ms
Login32.png
556 ms
gb.png
576 ms
SwitchApp32.png
588 ms
footer-more.gif
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mini-bottom.gif
667 ms
tool-sprites.gif
665 ms
Person.jpg
666 ms
United%20nations.png
688 ms
Posttext16.png
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DeleteLine16.png
712 ms
CutLine16.png
765 ms
MyMove16.png
767 ms
ImportantMove16.png
777 ms
Erase16.png
786 ms
Help.css
771 ms
collect
28 ms
zhcz-_WihjSQC0oHJ9TCYC3USBnSvpkopQaUR-2r7iU.ttf
7 ms
collect
13 ms
WhiteSlightly16.png
766 ms
collect
93 ms
Equal16.png
745 ms
Unclear16.png
745 ms
BlackSlightly16.png
749 ms
WhiteBetter16.png
667 ms
BlackBetter16.png
671 ms
WhiteWins16.png
698 ms
BlackWins16.png
731 ms
Compensation16.png
647 ms
grid3-hd-btn.gif
644 ms
sort_desc.gif
647 ms
Refresh16.png
660 ms
MyMove32.png
720 ms
White32.png
638 ms
DrillWhite32.png
630 ms
StopDrill32.png
652 ms
RepeatDrill32.png
640 ms
DiagramTTFritz68.png
755 ms
openings.chessbase.com accessibility score
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
openings.chessbase.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
openings.chessbase.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Openings.chessbase.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Openings.chessbase.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
openings.chessbase.com
Open Graph description is not detected on the main page of Openings Chess Base. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: