1.5 sec in total
279 ms
1.1 sec
125 ms
Welcome to support.carfax.com homepage info - get ready to check Support CARFAX best content for United States right away, or after learning these important things about support.carfax.com
Don't run the risk of buying a used car with costly hidden problems. Shop with confidence for a car with the CARFAX vehicle history that's right for you.
Visit support.carfax.comWe analyzed Support.carfax.com page load time and found that the first response time was 279 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.
support.carfax.com performance score
name
value
score
weighting
Value3.4 s
38/100
10%
Value7.3 s
4/100
25%
Value3.5 s
88/100
10%
Value130 ms
96/100
30%
Value0.836
4/100
15%
Value7.8 s
45/100
10%
279 ms
20 ms
23 ms
17 ms
39 ms
Our browser made a total of 42 requests to load all elements on the main page. We found that 48% of them (20 requests) were addressed to the original Support.carfax.com, 17% (7 requests) were made to Media.carfax.com and 10% (4 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (375 ms) relates to the external source Zn3tphmkchhzaq8tv-carfax.siteintercept.qualtrics.com.
Page size can be reduced by 271.0 kB (64%)
425.0 kB
154.0 kB
In fact, the total size of Support.carfax.com main page is 425.0 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Javascripts take 327.0 kB which makes up the majority of the site volume.
Potential reduce by 32.0 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 32.0 kB or 53% of the original size.
Potential reduce by 3.6 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, Support CARFAX needs image optimization as it can save up to 3.6 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 219.0 kB
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 219.0 kB or 67% of the original size.
Potential reduce by 16.5 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. Support.carfax.com needs all CSS files to be minified and compressed as it can save up to 16.5 kB or 77% of the original size.
Number of requests can be reduced by 24 (63%)
38
14
The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Support CARFAX. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
support.carfax.com
279 ms
stub.js
20 ms
3_3_3.Finalorg.ajax4jsf.javascript.AjaxScript
23 ms
SfdcCore.js
17 ms
pkb_jquery_1_6_2
39 ms
picklist.js
19 ms
VFState.js
14 ms
pkb_styling_knowledgeArticleJSOverride
52 ms
pkb_styling
55 ms
pkb_styling_knowledgeArticleCSSOverride
54 ms
jquery-ui.css
51 ms
style-apr-2014.css
129 ms
css
52 ms
css
55 ms
new_footer_v2.css
131 ms
header_v2.css
131 ms
s_code.js
148 ms
deployment.js
54 ms
jquery.min.js
57 ms
jquery-ui.min.js
77 ms
swfobject.js
198 ms
modal.js
107 ms
OmnitureOnClick.js
141 ms
simplyCountableJS
45 ms
pkb_jquery_simplemodal_1_4_4
45 ms
logo.png
97 ms
pkb_icon_search
101 ms
pkb_fox_leanOver
102 ms
pkb_icon_lg_report
99 ms
pkb_icon_lg_account
101 ms
pkb_icon_lg_products
98 ms
pkb_icon_chat
98 ms
zN7GBFwfMP4uA6AR0HCoLQ.ttf
93 ms
Hgo13k-tfSpn0qi1SFdUfaCWcynf_cDxXwCLxiixG1c.ttf
96 ms
d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf
97 ms
cfxapp_footersprite.png
51 ms
MultiNoun.jsonp
53 ms
ui-bg_flat_75_ffffff_40x100.png
28 ms
pkb_block_plus
22 ms
pkb_div_dotted
21 ms
s54760652622207
82 ms
375 ms
support.carfax.com accessibility score
support.carfax.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
support.carfax.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
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 Support.carfax.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 Support.carfax.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.
support.carfax.com
Open Graph description is not detected on the main page of Support CARFAX. 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: