Latest Performance Report for:

http://yslow.org/

2021-08-30 20:53:25
California, United States

Fully Loaded Time

0.01s

Total Page Size

1M

Requests

99

Performance Scores

Overall Score

F
(25.5%)

Desktop Performance Score

B
(86.07%)

Mobile PageSpeed Score

E
(54.26%)
We found 12 major issues
Download pdf

Summary

Here is more detailed information about the page.


Speed Visualization

0.3s
0.6s
0.9s
1.2s
1.5s
1.8s
2.1s
2.4s
2.7s
3s




TTFB: 60.584
First Contentful Paint: 0.4 s
Time to Interactive: 1.6 s
Largest Contentful Paint: 0.5 s




Filter:
Sort:
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3
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Page Title
Page Title : YSlow - Official Open Source Project Website

About this SEO factor:
Title is the heading of the webpage. The sentence or string enclosed between html title tag () is the title of your website. Search engines searches for the title of your website and displays title along with your website address on search result. Title is the most important element for both SEO and social sharing. Title should be less than 50 to 60 characters because search engine typically displays this length of string or sentence on search result. A good title can consist the primary keyword, secondary keyword and brand name. For example a fictitious gaming information providing sites title may be like "the future of gaming information is here". A webpage title should contain a proper glimpse of the website. title is important element as an identification of your website for user experience, SEO and social sharing. So have a nice and catching title.
Learn more
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Meta Description
Meta Description : Official YSlow Open Source Project Website. YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.

Your meta description exceeds 150 characters. It's not good.

About this SEO factor:
Description is the full interpretation of your website content and features. Most often it is a short paragraph that describe what are features and information provided by the website to its visitors. You may consider it a advertising of your website. Although not important for search engine ranking but very important for hits or visits through search engine results. Description should be less than 150 character because search engine shows this length of paragraph on search result. And every page of website should contain an unique description to avoid description duplication. Description is the definition of your website for user experience so form it as complete but short and precise illustration of your website.
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Meta Keyword
Meta Keyword : performance

About this SEO factor:
Meta keywords are keywords inside Meta tags. Meta keywords are not likely to be used for search engine ranking. the words of title and description can be used as meta keywords. it is a good idea for SEO other than search engine ranking.
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Single Keywords
Keyword Occurrence Density Possible Spam
YSlow 11 3.354 % No
performance 6 1.829 % Yes
web 5 1.524 % No
Avoid 4 1.22 % Yes
page 4 1.22 % No
rules 3 0.915 % No
GitHub 3 0.915 % No
Reduce 3 0.915 % No
CSS 3 0.915 % No
based 3 0.915 % No
Performance 3 0.915 % Yes
Make 3 0.915 % No
Exceptional 2 0.61 % No
analysis 2 0.61 % No
Cacheable 2 0.61 % No
Scripts 2 0.61 % No
AJAX 2 0.61 % No
page's 2 0.61 % No
Ruleset 2 0.61 % No
Requests 2 0.61 % No
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Two Word Keywords
Keyword Occurrence Density Possible Spam
based on 3 0.915 % No
in the 3 0.915 % No
web page 3 0.915 % No
at the 2 0.61 % No
or a 2 0.61 % No
the page's 2 0.61 % No
to see 2 0.61 % No
rules that 2 0.61 % No
34 rules 2 0.61 % No
discussed in 2 0.61 % No
does YSlow 2 0.61 % No
Exceptional Performance 2 0.61 % No
and CSS 2 0.61 % No
JavaScript and 2 0.61 % No
on GitHub 2 0.61 % No
the YSlow 2 0.61 % No
YSlow Ruleset 2 0.61 % No
404s Reduce 1 0.305 % No
Reduce Cookie 1 0.305 % No
Cookie Size 1 0.305 % No
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Three Word Keywords
Keyword Occurrence Density Possible Spam
34 rules that 2 0.61 % No
discussed in the 2 0.61 % No
JavaScript and CSS 2 0.61 % No
Fork me on 1 0.305 % No
Filters Do Not 1 0.305 % No
Avoid Filters Do 1 0.305 % No
Components Avoid Filters 1 0.305 % No
for Components Avoid 1 0.305 % No
Domains for Components 1 0.305 % No
CookieFree Domains for 1 0.305 % No
Not Scale Images 1 0.305 % No
Use CookieFree Domains 1 0.305 % No
Size Use CookieFree 1 0.305 % No
Cookie Size Use 1 0.305 % No
Reduce Cookie Size 1 0.305 % No
404s Reduce Cookie 1 0.305 % No
No 404s Reduce 1 0.305 % No
Elements No 404s 1 0.305 % No
DOM Elements No 1 0.305 % No
Do Not Scale 1 0.305 % No
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Four Word Keywords
Keyword Occurrence Density Possible Spam
Fork me on GitHub 1 0.305 % No
Use CookieFree Domains for 1 0.305 % No
Do Not Scale Images 1 0.305 % No
Filters Do Not Scale 1 0.305 % No
Avoid Filters Do Not 1 0.305 % No
Components Avoid Filters Do 1 0.305 % No
for Components Avoid Filters 1 0.305 % No
Domains for Components Avoid 1 0.305 % No
CookieFree Domains for Components 1 0.305 % No
Size Use CookieFree Domains 1 0.305 % No
Scale Images in HTML 1 0.305 % No
Cookie Size Use CookieFree 1 0.305 % No
Reduce Cookie Size Use 1 0.305 % No
404s Reduce Cookie Size 1 0.305 % No
No 404s Reduce Cookie 1 0.305 % No
Elements No 404s Reduce 1 0.305 % No
DOM Elements No 404s 1 0.305 % No
of DOM Elements No 1 0.305 % No
Not Scale Images in 1 0.305 % No
Images in HTML Make 1 0.305 % No
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Keyword Usage
The most using keywords match with meta keywords.

About this SEO factor:
Keyword usage is the using of your keywords inside Meta tags and contents of your website. Use keywords that describes your site properly for precise search engine result of your website.
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Total Words
Total Words : 328

About this SEO factor:
Unique words are uncommon words that reflects your site features and informations. Search engine metrics are not intended to use unique words as ranking factor but it is still useful to get a proper picture of your site contents. Using positive unique words like complete, perfect, shiny, is a good idea user experience.

Stop words are common words like all the preposition, some generic words like download, click me, offer, win etc. since most used keyword may be a slight factor for visitors you are encouraged to use more unique words and less stop words.
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Text/HTML Ratio Test
Site passed text/HTML ratio test.

Text/HTML Ratio Test : 28%

About this SEO factor:
The ideal page's ratio of text to HTML code must be lie between 20 to 60%. Because if it is come less than 20% it means you need to write more text in your web page while in case of more than 60% your page might be considered as spam.
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HTML Headings

H1(0)

H2(0)

H3(0)

H4(0)

H5(0)

H6(0)



About this SEO factor:
h1 status is the existence of any content inside h1 tag. Although not important like Meta titles and descriptions for search engine ranking but still a good way to describe your contents in search engine result.

h2 status less important but should be used for proper understanding of your website for visitor.
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Robot.txt
Your site have robot.txt

Robot.txt

User-agent: *
Allow: /



About this SEO factor:
robots.txt is text file that reside on website root directory and contains the instruction for various robots (mainly search engine robots) for how to crawl and indexing your website for their webpage. robots.txt contains the search bots or others bots name, directory list allowed or disallowed to be indexing and crawling for bots, time delay for bots to crawl and indexing and even the sitemap url. A full access or a full restriction or customized access or restriction can be imposed through robots.txt.

robots.txt is very important for SEO. Your website directories will be crawled and indexed on search engine according to robots.txt instructions. So add a robots.txt file in your website root directory. Write it properly including your content enriched pages and other public pages and exclude any pages which contain sensitive information. Remember robots.txt instruction to restrict access to your sensitive information of your page is not formidable on web page security ground. So do not use it on security purpose.
Learn more
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Sitemap
Your site does not have sitemap

About this SEO factor:
Sitemap is a xml file which contain full list of your website urls. It is used to include directories of your websites for crawling and indexing for search engine and access for users. it can help search engine robots for indexing your website more fast and deeply. It is roughly an opposite of robots.txt You can create a sitemap.xml by various free and paid service or you can write it with proper way (read about how write a sitemap).

Also keep these things in mind:
1) Sitemap must be less than 10 MB (10,485,760 bytes) and can contain maximum 50,000 urls. if you have more uls than this create multiple sitemap files and use a sitemap index file.
2) Put your sitemap in website root directory and add the url of your sitemap in robots.txt.
3) sitemap.xml can be compressed using grip for faster loading.

Broken link: a broken link is an inaccessible link or url of a website. a higher rate of broken links have a negative effect on search engine ranking due to reduced link equity. it also has a bad impact on user experience. There are several reasons for broken link. All are listed below.
1) An incorrect link entered by you.
2) The destination website removed the linked web page given by you. (A common 404 error).
3) The destination website is irreversibly moved or not exists anymore. (Changing domain or site blocked or dysfunctional).
4) User may behind some firewall or alike software or security mechanism that is blocking the access to the destination website.
5) You have provided a link to a site that is blocked by firewall or alike software for outside access.
Learn more or Learn more
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Internal Vs. External Links
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NoIndex , NoFollow, DoDollow Links
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3
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SEO Friendly Links
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Favicon
Your site does not have favicon.

Learn more
green
3
check
Image 'alt' Test
Your site does not have any image without alt text.

About this SEO factor:
An alternate title for image. Alt attribute content to describe an image. It is necessary for notifying search engine spider and improve actability to your website. So put a suitable title for your image at least those are your website content not including the images for designing your website. To resolve this put a suitable title in your alt attributes.
Learn more
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DOC Type
DOC Type :


Page do not have doc type

About this SEO factor:
doc type is not SEO factor but it is checked for validating your web page. So set a doctype at your html page.
Learn more
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3
check
Depreciated HTML Tag
Your site does not have any depreciated HTML tag.

About this SEO factor:
Older HTML tags and attributes that have been superseded by other more functional or flexible alternatives (whether as HTML or as CSS ) are declared as deprecated in HTML4 by the W3C - the consortium that sets the HTML standards. Browsers should continue to support deprecated tags and attributes, but eventually these tags are likely to become obsolete and so future support cannot be guaranteed.
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3
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HTML Page Size
HTML Page Size : 11 KB


HTML page size is <= 100KB

About this SEO factor:
HTML page size is the one of the main factors of webpage loading time. It should be less than 100 KB according to google recommendation. Note that, this size not including external css, js or images files. So small page size less loading time.

To reduce your page size do this steps
1) Move all your css and js code to external file.
2) make sure your text content be on top of the page so that it can displayed before full page loading.
3) Reduce or compress all the image, flash media file etc. will be better if these files are less than 100 KB
Learn more
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3
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GZIP Compression
GZIP Compressed Size : 3 KB

GZIP compression is enabled.

About this SEO factor:
GZIP is a generic compressor that can be applied to any stream of bytes: under the hood it remembers some of the previously seen content and attempts to find and replace duplicate data fragments in an efficient way - for the curious, great low-level explanation of GZIP. However, in practice, GZIP performs best on text-based content, often achieving compression rates of as high as 70-90% for larger files, whereas running GZIP on assets that are already compressed via alternative algorithms (e.g. most image formats) yields little to no improvement. It is also recommended that, GZIP compressed size should be <=33 KB
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3
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Inline CSS
Your site does not have any inline css.

About this SEO factor:
Inline css is the css code reside in html page under html tags not in external .css file. Inline css increases the loading time of your webpage which is an important search engine ranking factor. So try not to use inline css.
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3
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Internal CSS
Your site does not have any internal css.

About this SEO factor:
Internal css is the css codes which resides on html page inside style tag. Internal css is increases loading time since no page caching is possible for internal css. Try to put your css code in external file.
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Micro Data Schema Test
Site failed micro data schema test.

About this SEO factor:
Micro data is the information underlying a html string or paragraph. Consider a string “Avatar”, it could refer a profile picture on forum, blog or social networking site or may it refer to a highly successful 3D movie. Microdot is used to specify the reference or underlying information about an html string. Microdata gives chances to search engine and other application for better understanding of your content and better display significantly on search result.
Learn more
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IP Canonicalization Test
Site failed IP canonicalization test.

About this SEO factor:
If multiple domain name is registered under single ip address the search bots can label other sites as duplicates of one sites. This is ip canonicalization. Little bit like url canonicalizaion. To solve this use redirects.
Learn more
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3
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URL Canonicalization Test
Site passed URL canonicalization test.

About this SEO factor:
Canonical tags make your all urls those lead to a single address or webpage into a single url. Like :
<link rel="canonical" href="https://mywebsite.com/home" />
<link rel="canonical" href="https://www.mywebsite.com/home" />
Both refer to the link mywebsite.com/home. So all the different url with same content or page now comes under the link or url mywebsite.com/home. Which will boost up your search engine ranking by eliminating content duplication. Use canonical tag for all the same urls.
Learn more
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3
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Plain Text Email Test
Site passed plain text email test. No plain text email found.

About this SEO factor:
Plain text email address is vulnerable to email scrapping agents. An email scrapping agent crawls your website and collects every Email address which written in plain text. So existence of plain text email address in your website can help spammers in email Harvesting. This could be a bad sign for search engine.

To fight this you can obfuscate your email addresses in several ways:
1) CSS pseudo classes.
2) Writing backward your email address.
3) Turn of display using css.
4) Obfuscate your email address using javascript.
5) Using wordpress and php (wordpress site only).
Learn more
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Keep request counts low and transfer sizes small
Keep request counts low and transfer sizes small :
DESKTOP 86 requests • 1,049 KiB

MOBILE 101 requests • 1,530 KiB


About this SEO factor:
To set budgets for the quantity and size of page resources, add a budget.json file. Learn More
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Eliminate render-blocking resources
Eliminate render-blocking resources :
MOBILE Potential savings of 150 ms

DESKTOP Potential savings of 0 ms


About this SEO factor:
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn More
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Efficiently encode images
Efficiently encode images :
MOBILE Potential savings of 13 KiB

DESKTOP Potential savings of 5 KiB


About this SEO factor:
Optimized images load faster and consume less cellular data. Learn More
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Serve static assets with an efficient cache policy
Serve static assets with an efficient cache policy :
MOBILE 22 resources found

DESKTOP 13 resources found


About this SEO factor:
A long cache lifetime can speed up repeat visits to your page. Learn More
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Reduce the impact of third-party code
Reduce the impact of third-party code :
MOBILE Third-party code blocked the main thread for 1,280 ms

DESKTOP Third-party code blocked the main thread for 70 ms


About this SEO factor:
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. Learn More
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First Contentful Paint (3G)
First Contentful Paint (3G) :
MOBILE 3188 ms

DESKTOP


About this SEO factor:
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network. Learn More
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Total Blocking Time
Total Blocking Time :
MOBILE 1,440 ms

DESKTOP 40 ms


About this SEO factor:
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn More
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Reduce JavaScript execution time
Reduce JavaScript execution time :
MOBILE 5.7 s

DESKTOP 0.9 s


About this SEO factor:
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn More
green
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Defer offscreen images
Defer offscreen images :
MOBILE

DESKTOP


About this SEO factor:
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn More
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Server Backend Latencies
Server Backend Latencies :
MOBILE 0 ms

DESKTOP 0 ms


About this SEO factor:
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance. Learn More
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Avoids enormous network payloads
Avoids enormous network payloads :
MOBILE Total size was 1,530 KiB

DESKTOP Total size was 1,049 KiB


About this SEO factor:
Large network payloads cost users real money and are highly correlated with long load times. Learn More
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Minimize main-thread work
Minimize main-thread work :
MOBILE 9.9 s

DESKTOP 2.1 s


About this SEO factor:
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn More
green
3
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Avoid chaining critical requests
Avoid chaining critical requests :
MOBILE 2 chains found

DESKTOP 2 chains found


About this SEO factor:
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. Learn More
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Avoids an excessive DOM size
Avoids an excessive DOM size :
MOBILE 197 elements

DESKTOP 197 elements


About this SEO factor:
A large DOM will increase memory usage, cause longer Learn More
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3
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Avoid multiple page redirects
Avoid multiple page redirects :
MOBILE

DESKTOP


About this SEO factor:
Redirects introduce additional delays before the page can be loaded. Learn More
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Network Round Trip Times
Network Round Trip Times :
MOBILE 0 ms

DESKTOP 0 ms


About this SEO factor:
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance. Learn More
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CURL Response
urlhttp://yslow.org/content typetext/html; charset=utf-8
http code200header size473
request size122filetime-1
ssl verify result0redirect count0
total time0.010324namelookup time0.004223
connect time0.005174pretransfer time0.005217
size upload0size download10887
speed download1054533speed upload0
download content length10887upload content length-1
starttransfer time0.010242redirect time0
redirect urlprimary ip192.30.252.153
certinfoprimary port80
local ip173.236.198.197local port44088
http version2protocol1
ssl verifyresult0schemeHTTP
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Alexa Rank
Traffic Rank 227927
Reach Rank 173754
Top Country India
Top Country Rank 129304
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Domain IP Information
ISP GitHub
IP 192.30.252.153
Organization GitHub
City
Country United States
Time Zone
Longitude -97.822000
Latitude 37.751000
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IP & DNS Report
IPv4 192.30.252.153
IPv6 Not Compatiable
DNS Report
SLHostClassTTLTypePRITargetIP
1yslow.orgIN3600A192.30.252.153
2yslow.orgIN3600NSns02.domaincontrol.com
3yslow.orgIN3600NSns01.domaincontrol.com
4yslow.orgIN86400MX20ALT1.ASPMX.L.GOOGLE.COM
5yslow.orgIN86400MX30ALT2.ASPMX.L.GOOGLE.COM
6yslow.orgIN86400MX10ASPMX.L.GOOGLE.COM
7yslow.orgIN86400MX40ASPMX2.GOOGLEMAIL.COM
8yslow.orgIN86400MX50ASPMX3.GOOGLEMAIL.COM

Performance Metrics

The following metrics are generated using performance data.


First Contentful Paint

How quickly content like text or images are painted onto your page. A good user experience is 0.9s or less. Learn more.

1.7 s DESKTOP 0.5 s First Contentful Paint 1
0.4 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
NA - No data
0.4s

Time to Interactive

How long it takes for your page to become fully interactive. A good user experience is 2.5s or less. Learn more.

Time To Interactive Is The Amount Of Time It Takes For The Page To Become Fully Interactive.Learn More 11.0 s DESKTOP 1.7 s Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more
Excellent!
1.6s

Speed Index

How quickly the contents of your page are visibly populated. A good user experience is 1.3s or less. Learn more.

Speed Index shows how quickly the contents of a page are visibly populated. Learn more. Speed Index Shows How Quickly The Contents Of A Page Are Visibly Populated. 4.0 s DESKTOP 0.8 s Speed Index shows how quickly the contents of a page are visibly populated. Learn more

Audits - Speed Index

ID: speed-index
Title: Speed Index
Description: Speed Index shows how quickly the contents of a page are visibly populated. [Learn more](https://web.dev/speed-index/).
Score: 0.98
Score Display Mode: numeric
Display Value: 0.9 s
Numeric Value: 916.88138511715
NA - No data
0.9s

Total Blocking Time

How much time is blocked by scripts during your page loading process. A good user experience is 150ms or less. Learn more.

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more
Excellent!
80s

Largest Contentful Paint

How long it takes for the largest element of content (e.g. a hero image) to be painted on your page. A good user experience is 1.2s or less. Learn more.

Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more
Excellent!
0.5s

Cumulative Layout Shift

How much your page's layout shifts as it loads. A good user experience is a score of 0.1 or less. Learn more.

Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more
Much more than recommended
0.309

  • Lab Data
  • First Meaningful Paint 1.7 s DESKTOP 0.5 s
    ID: first-meaningful-paint
    Title: First Meaningful Paint
    Description: First Meaningful Paint measures when the primary content of a page is visible. [Learn more](https://web.dev/first-meaningful-paint/).
    Score: 1
    Score Display Mode: numeric
    Display Value: 0.4 s
    Numeric Value: 447
  • Max Potential First Input Delay 370 ms DESKTOP 80 ms

    Audits - Max-Potential FID

    ID: max-potential-fid
    Title: Max Potential First Input Delay
    Description: The maximum potential First Input Delay that your users could experience is the duration of the longest task. [Learn more](https://web.dev/lighthouse-max-potential-fid/).
    Score: 0.97
    Score Display Mode: numeric
    Display Value: 90 ms
    Numeric Value: 94

Audits - Uses Long Cache TTL

Numeric Value: 55000.082229205
ID: uses-long-cache-ttl
Title: Serve static assets with an efficient cache policy
Description: A long cache lifetime can speed up repeat visits to your page. [Learn more](https://web.dev/uses-long-cache-ttl/).
Score: 0.77
Score Display Mode: numeric
Display Value: 16 resources found
Numeric Value: 55000.082229205

Audits - Uses Long Cache TTL - Details

URL
http://yslow.org/stylesheets/styles-13101021-min.css 0.17 hours 0.003 MB 0.08
http://platform.twitter.com/widgets.js 0.50 hours 0.028 MB 0.14
https://translate.googleapis.com/translate_static/css/translateelement... 1.00 hours 0.004 MB 0.2
https://translate.googleapis.com/translate_static/css/translateelement... 1.00 hours 0.004 MB 0.2
https://translate.googleapis.com/translate_static/js/element/main.js 1.00 hours 0.003 MB 0.2
http://www.google-analytics.com/ga.js 2.00 hours 0.017 MB 0.25
https://ton.twimg.com/tfw/css/syndication_bundle_v1_73385286cca9d2256f... 168.00 hours 0.007 MB 0.9
https://ton.twimg.com/tfw/css/syndication_bundle_v1_73385286cca9d2256f... 168.00 hours 0.007 MB 0.9
https://tpc.googlesyndication.com/pagead/js/r20210826/r20110914/abg_li... 336.00 hours 0.008 MB 0.9
https://tpc.googlesyndication.com/pagead/js/r20210826/r20110914/client... 336.00 hours 0.007 MB 0.9
https://tpc.googlesyndication.com/pagead/js/r20210826/r20110914/client... 336.00 hours 0.002 MB 0.9
https://tpc.googlesyndication.com/pagead/js/r20210826/r20110914/client... 336.00 hours 0.002 MB 0.9
https://www.gstatic.com/mysidia/bf370751b3c301aa27eddd739f5e1f7e.js?ta... 2,160.00 hours 0.011 MB 0.92
https://www.gstatic.com/mysidia/28960c8a32e8dcc49d8dc53b67dce604.js?ta... 2,160.00 hours 0.005 MB 0.92
https://www.gstatic.com/mysidia/c5ea4ee67b449988824560379fde2c11.js?ta... 2,160.00 hours 0.004 MB 0.92
https://www.gstatic.com/mysidia/67e891c66a8abb3a9ef778cca46befd7.js?ta... 2,160.00 hours 0.003 MB 0.92
0.05 MB





Results

Results - Summary

Requested Url: http://yslow.org/
Final Url: http://yslow.org/
Lighthouse Version: 8.0.0
User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/92.0.4515.119 Safari/537.36
Fetch Time: 2021-08-31T03:51:03.535Z

Results - Environment

Network User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4420.0 Safari/537.36 Chrome-Lighthouse
Host User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/92.0.4515.119 Safari/537.36
Benchmark Index: 945

Results - Audits

SI (Speed Index) MS 15%: 917
LCP (Largest Contentful Paint) MS 25%: 467
TTI (Time to Interactive) MS 15%: 1628
TBT (Total Blocking Time) MS 25%: 81
CLS (Cumulative Layout Shift) MS 5%: 0.3092

Audits - Uses Optimized Images

ID: uses-optimized-images
Title: Efficiently encode images
Description: Optimized images load faster and consume less cellular data. [Learn more](https://web.dev/uses-optimized-images/).
Score: 1
Score Display Mode: numeric
Display Value: Potential savings of 5 KiB
Numeric Value: 0

Audits - Uses Optimized Images - Overall Savings Bytes

Overall Savings Bytes: 5497
Overall Savings (ms): 0
Type: opportunity

Audits - Uses Optimized Images - Details

Data:
  url: https://pbs.twimg.com/profile_images/63378169/philipface_normal.jpg
  wastedBytes: 5497
  fromProtocol: 1
  isCrossOrigin: 1
  totalBytes: 7190

Audits - Third-Party Summary

ID: third-party-summary
Title: Minimize third-party usage
Description: Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading. [Learn more](https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/loading-third-party-javascript/).
Score: 1
Score Display Mode: binary
Display Value: Third-party code blocked the main thread for 120 ms

Item Detail:
   Text: Google/Doubleclick Ads
   URL: https://www.doubleclickbygoogle.com/
   Type: link
   Main Thread Time: 1080.025
   Transfer Size: 360601
   Blocking Time: 120.84
Item Detail:
   Text: Twitter
   URL: https://twitter.com
   Type: link
   Main Thread Time: 333.895
   Transfer Size: 492656
   Blocking Time: 0
Item Detail:
   Text: Other Google APIs/SDKs
   URL: https://developers.google.com/apis-explorer/#p/
   Type: link
   Main Thread Time: 105.106
   Transfer Size: 109645
   Blocking Time: 0
Item Detail:
   Text: Google Fonts
   URL: https://fonts.google.com/
   Type: link
   Main Thread Time: 0
   Transfer Size: 32133
   Blocking Time: 0
Item Detail:
   Text: Google CDN
   URL: https://developers.google.com/speed/libraries/
   Type: link
   Main Thread Time: 24.346
   Transfer Size: 28214
   Blocking Time: 0
Item Detail:
   Text: Google Analytics
   URL: https://www.google.com/analytics/analytics/
   Type: link
   Main Thread Time: 29.784
   Transfer Size: 18042
   Blocking Time: 0
Item Detail:
   Text: Imgur
   Type: link
   Main Thread Time: 0
   Transfer Size: 17339
   Blocking Time: 0
Item Detail:
   Text: Facebook
   URL: https://www.facebook.com
   Type: link
   Main Thread Time: 15.572
   Transfer Size: 14087
   Blocking Time: 0
Item Detail:
   Text: Yahoo!
   URL: https://www.yahoo.com/
   Type: link
   Main Thread Time: 0
   Transfer Size: 4969
   Blocking Time: 0
Type: table
Wasted Bytes: 1077686
Wasted Time (ms): 120.84
Text: Third-Party
Item Type: link
Key: entity

Key: transferSize
Text: Transfer Size
Granularity: 1
Item Type: bytes
Key: blockingTime
Text: Main-Thread Blocking Time
Granularity: 1
Item Type: ms

Audits - Timing Budget

ID: timing-budget
Title: Timing budget
Description: Set a timing budget to help you keep an eye on the performance of your site. Performant sites load fast and respond to user input events quickly. [Learn more](https://developers.google.com/web/tools/lighthouse/audits/budgets).
Score: Unknown
Score Display Mode: notApplicable

Audits - Render Blocking Resources

ID: render-blocking-resources
Title: Eliminate render-blocking resources
Description: Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. [Learn more](https://web.dev/render-blocking-resources/).
Score: 1
Score Display Mode: numeric
Display Value: Potential savings of 0 ms
Numeric Value: 0
Type: opportunity
Overall Savings (ms): 0

Audits - Render Blocking Resources - Details

Data item:
   Total Bytes: 2826
   URL: http://yslow.org/stylesheets/styles-13101021-min.css
   Wasted Time (ms): 70

Audits - Render Blocking Resources - Headings

Heading Item:
   Label: URL
   Value Type: url
   Key: url
Heading Item:
   Label: Transfer Size
   Value Type: bytes
   Key: totalBytes
Heading Item:
   Label: Potential Savings
   Value Type: timespanMs
   Key: wastedMs

Audits - Main Thread Tasks

ID: main-thread-tasks
Title: Tasks
Description: Lists the toplevel main thread tasks that executed during page load.
Score: Unknown
Score Display Mode: informative
Type: table

Audits - Main Thread Tasks - Headings

Heading Items:
   Text: Start Time
   Key: startTime
   Item Type: ms
   Granularity: 1
Heading Items:
   Text: End Time
   Key: duration
   Item Type: ms
   Granularity: 1

Audits - Network RTT

ID: network-rtt
Title: Network Round Trip Times
Description: Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance. [Learn more](https://hpbn.co/primer-on-latency-and-bandwidth/).
Score: Unknown
Score Display Mode: informative
Display Value: 0 ms
Numeric Value: 0

Audits - Unminified Javascript

ID: unminified-javascript
Title: Minify JavaScript
Description: Minifying JavaScript files can reduce payload sizes and script parse time. [Learn more](https://web.dev/unminified-javascript/).
Score: 1
Score Display Mode: numeric
Numeric Value: 0
Details (print_r):
Array
(
    [items] => Array
        (
        )

    [overallSavingsBytes] => 0
    [headings] => Array
        (
        )

    [overallSavingsMs] => 0
    [type] => opportunity
)

Audits - Mainthread Work Breakdown

ID: mainthread-work-breakdown
Title: Minimize main-thread work
Description: Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. [Learn more](https://web.dev/mainthread-work-breakdown/)
Score: 0.88
Score Display Mode: numeric
Display Value: 2.1 s
Numeric Value: 2129.453

Audits - Mainthread Work Breakdown - Details

Type: table
Text: Category
Item Type: text
Key: groupLabel
Item Type: ms
Text: Time Spent
Granularity: 1
Key: duration

Heading Items:
   Group Label: Script Evaluation
   Duration: 1105.637
   Group: scriptEvaluation

Heading Items:
   Group Label: Other
   Duration: 374.776
   Group: other

Heading Items:
   Group Label: Style & Layout
   Duration: 245.329
   Group: styleLayout

Heading Items:
   Group Label: Rendering
   Duration: 189.319
   Group: paintCompositeRender

Heading Items:
   Group Label: Script Parsing & Compilation
   Duration: 100.216
   Group: scriptParseCompile

Heading Items:
   Group Label: Parse HTML & CSS
   Duration: 64.233
   Group: parseHTML

Heading Items:
   Group Label: Garbage Collection
   Duration: 49.943
   Group: garbageCollection

Audits - Unminified CSS

ID: unminified-css
Title: Minify CSS
Description: Minifying CSS files can reduce network payload sizes. [Learn more](https://web.dev/unminified-css/).
Score: 1
Score Display Mode: numeric
Display Value: Unknown
Numeric Value: 0
Overall Savings (ms): 0
Overall Savings Bytes: 0
Type: opportunity

Audits - Unminified CSS - Details


Audits - Unused CSS Rules

ID: unused-css-rules
Title: Reduce unused CSS
Description: Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. [Learn more](https://web.dev/unused-css-rules/).
Score: 1
Score Display Mode: numeric
Display Value: Unknown
Numeric Value: 0
Type: opportunity
Overall Savings (ms): 0
Overall Savings Bytes: 0

Audits - Unused CSS Rules - Details


Audits - Interactive

ID: interactive
Title: Time to Interactive
Description: Time to interactive is the amount of time it takes for the page to become fully interactive. [Learn more](https://web.dev/interactive/).
Score: 0.98
Score Display Mode: numeric
Display Value: 1.6 s
Numeric Value: 1628

Audits - Critical Request Chains

ID: critical-request-chains
Title: Avoid chaining critical requests
Description: The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. [Learn more](https://web.dev/critical-request-chains/).
Score: Unknown
Score Display Mode: informative
Display Value: 2 chains found
Longest Chain Transfer Size: 2826
Longest Chain Duration: 131.11700024456
Longest Chain Length: 2
Type: criticalrequestchain

Audits - Critical Request Chains - Details


Critical Request Chains Request:
   Request Start Time: 2990715.296113
   Request Response Received Time: 2990715.355697
   Request End Time: 2990715.355707
   Request URL: http://yslow.org/
   Request Transfer Size: 4020
   Critical Request Chains Children:
   Critical Request Chains Child:
    request startTime: 2990715.368559
     Request Response Received Time: 2990715.427224
     Request End Time: 2990715.42723
     Request URL: http://yslow.org/stylesheets/styles-13101021-min.css
     Request Transfer Size: 2826
   Critical Request Chains Child:
    request startTime: 2990715.368874
     Request Response Received Time: 2990715.38619
     Request End Time: 2990715.386196
     Request URL: http://pagead2.googlesyndication.com/pagead/show_ads.js
     Request Transfer Size: 36065

Audits - Final Screenshot

ID: final-screenshot
Title: Final Screenshot
Description: The last screenshot captured of the pageload.
Score: Unknown
Score Display Mode: informative
Type: screenshot
Timing: 1888
Timestamp: 2990717183194
Data:

Audits - Offscreen Images

ID: offscreen-images
Title: Defer offscreen images
Description: Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. [Learn more](https://web.dev/offscreen-images/).
Score: 1
Score Display Mode: numeric
Numeric Value: 0
Overall Savings (ms): 0
Overall Savings Bytes: 0
Type: opportunity

Audits - Largest Contentful Paint

ID: largest-contentful-paint
Title: Largest Contentful Paint
Description: Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more](https://web.dev/lighthouse-largest-contentful-paint/)
Score: 1
Score Display Mode: numeric
Display Value: 0.5 s
Numeric Value: 467

Audits - Diagnostics

ID: diagnostics
Title: Diagnostics
Description: Collection of useful page vitals.
Score: Unknown
Score Display Mode: informative
Type: debugdata

Diagnostics Items:
   Total Byte Weight: 1088781
   Max RTT: 0.00076627717564677
   Throughput: 171966073.88049
   Num Tasks Over 10ms: 43
   Num Tasks Over 500ms: 0
   Total Task Time: 2129.453
   Num Tasks: 1948
   Num Tasks Over 100ms: 1
   Num Tasks Over 50ms: 5
   RTT: 0.00076627717564677
   Num Tasks Over 25ms: 13
   Num Stylesheets: 7
   Num Scripts: 28
   Main Document Transfer Size: 4020
   Num Requests: 99
   Num Fonts: 2

Audits - Estimated Input Latency

ID: Unknown
Title: Unknown
Description: Unknown
Score: Unknown
Score Display Mode: Unknown
Display Value: Unknown
Numeric Value: Unknown

Audits - Layout Shift Elements

ID: layout-shift-elements
Title: Avoid large layout shifts
Description: These DOM elements contribute most to the CLS of the page.
Score: Unknown
Score Display Mode: informative
Display Value: 4 elements found
Type: table

Audits - Layout Shift Elements - Details


Layout Shift Elements Headings:
   Key: node
   Item Type: node
   Text: Element

Layout Shift Elements Headings:
   Key: score
   Item Type: numeric
   Text: CLS Contribution

Layout Shift Elements Items:
   Node Path: 1,HTML,1,BODY,1,DIV,1,DIV
   Node Snippet:

   Node Type: node
   Node Selector: body > div.wrapper > div#sidebar
   Node Label:
Layout Shift Elements Items:
   Node Path: 0,HTML,1,BODY,0,DIV,2,FOOTER
   Node Snippet:

   Node Type: node
   Node Selector: body > div.timeline-Widget > footer.timeline-Footer
   Node Label: Embed View on Twitter
Layout Shift Elements Items:
   Node Path: 1,HTML,1,BODY,1,DIV,1,DIV,2,IFRAME
   Node Snippet: