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Top Technologies

Google Font API
Font Scripts
WordPress
CMS
CloudFlare
CDN
Nginx
Web Servers
Font Awesome
Font Scripts
Google Tag Manager
Tag Managers
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Web Servers
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Web Frameworks

45 backbonejs.org Last Updated: 2 months

Success 47% of passed verification steps
Warning 23% of total warning
Errors 30% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 100%
Best Practices Desktop Score 93%
SEO Desktop Score 82%
Progressive Web App Desktop Score 52%
Performance Mobile Score 96%
Best Practices Mobile Score 93%
SEO Mobile Score 82%
Progressive Web App Mobile Score 50%
Page Authority Authority 61%
Domain Authority Domain Authority 62%
Moz Rank 6.1/10
Bounce Rate Rate 0%
Title Tag 11 Characters
BACKBONE.JS
Meta Description 0 Characters
NO DATA
Effective URL 22 Characters
https://backbonejs.org
Excerpt Page content
Backbone.js Backbone.js (1.4.0) » GitHub Repository » Annotated Source Getting Started - Introduction – Models and Views – Co...
Keywords Cloud Density
model368 backbone331 collection251 models135 function118 events113 options109 event107 attributes100 view99
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
model 368
backbone 331
collection 251
models 135
function 118
events 113
options 109
event 107
attributes 100
view 99
Google Preview Your look like this in google search result
BACKBONE.JS
https://backbonejs.org
Backbone.js Backbone.js (1.4.0) » GitHub Repository » Annotated Source Getting Started - Introduction – Models and Views – Co...
Robots.txt File No Found
Sitemap.xml File No Found
Page Size Code & Text Ratio
Document Size: ~214.35 KB
Code Size: ~62.95 KB
Text Size: ~151.4 KB Ratio: 70.63%

Social Data

Delicious Total: 0
Facebook Total: 2,629
Google Total: 0
Linkedin Total: 0
Pinterest Total: 5
Stumbleupon Total: 0
Tumblr Total: 0
Vk Total: 0

Estimation Traffic and Earnings

660
Unique Visits
Daily
1,221
Pages Views
Daily
$1
Income
Daily
18,480
Unique Visits
Monthly
34,799
Pages Views
Monthly
$25
Income
Monthly
213,840
Unique Visits
Yearly
410,256
Pages Views
Yearly
$264
Income
Yearly

Technologies

PWA - Manifest

Manifest is not valid
Your site don't have valid manifest.json, read more in Web App Manifest

Desktop

Desktop Screenshot
Minimize third-party usage Third-party code blocked the main thread for 0 ms
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
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Time to Interactive 0.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Speed Index 0.6 s
Speed Index shows how quickly the contents of a page are visibly populated
Estimated Input Latency 10 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Properly size images Potential savings of 9 KiB
Serve images that are appropriately-sized to save cellular data and improve load time
First Contentful Paint 0.4 s
First Contentful Paint marks the time at which the first text or image is painted
Serve static assets with an efficient cache policy 14 resources found
A long cache lifetime can speed up repeat visits to your page
Network Round Trip Times 0 ms
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
JavaScript execution time 0.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
First CPU Idle 0.4 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle/).
Links do not have descriptive text 1 link found
Descriptive link text helps search engines understand your content
Avoids enormous network payloads Total size was 222 KiB
Large network payloads cost users real money and are highly correlated with long load times
Server Backend Latencies 0 ms
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
First Meaningful Paint 0.4 s
First Meaningful Paint measures when the primary content of a page is visible
Includes front-end JavaScript libraries with known security vulnerabilities 6 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Keep request counts low and transfer sizes small 15 requests • 222 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Avoid an excessive DOM size 2,931 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Avoid serving legacy JavaScript to modern browsers Potential savings of 7 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
Avoid chaining critical requests 6 chains found
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
Largest Contentful Paint 0.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Minimizes main-thread work 0.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Avoids large JavaScript libraries with smaller alternatives 0 large libraries found
Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size
Remove unused JavaScript Potential savings of 39 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Max Potential First Input Delay 30 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Minify JavaScript Potential savings of 59 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
Initial server response time was short Root document took 360 ms
Keep the server response time for the main document short because all other requests depend on it
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds

Mobile

Mobile Screenshot
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Cumulative Layout Shift 0.041
Cumulative Layout Shift measures the movement of visible elements within the viewport
Minimize main-thread work 2.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Avoid long main-thread tasks 5 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Server Backend Latencies 0 ms
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
First CPU Idle 2.6 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle/).
Estimated Input Latency 60 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Document uses legible font sizes 99.74% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px
Max Potential First Input Delay 180 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Avoids enormous network payloads Total size was 222 KiB
Large network payloads cost users real money and are highly correlated with long load times
Network Round Trip Times 0 ms
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
Avoid serving legacy JavaScript to modern browsers Potential savings of 7 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers
Avoid large layout shifts 5 elements found
These DOM elements contribute most to the CLS of the page.
Includes front-end JavaScript libraries with known security vulnerabilities 6 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Remove unused JavaScript Potential savings of 39 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Avoid an excessive DOM size 2,931 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
Speed Index 1.4 s
Speed Index shows how quickly the contents of a page are visibly populated
First Contentful Paint (3G) 2397 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Avoids large JavaScript libraries with smaller alternatives 0 large libraries found
Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size
Serve static assets with an efficient cache policy 14 resources found
A long cache lifetime can speed up repeat visits to your page
Links do not have descriptive text 1 link found
Descriptive link text helps search engines understand your content
Minimize third-party usage Third-party code blocked the main thread for 0 ms
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
Keep request counts low and transfer sizes small 15 requests • 222 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Time to Interactive 3.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive
JavaScript execution time 0.3 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Initial server response time was short Root document took 80 ms
Keep the server response time for the main document short because all other requests depend on it
Largest Contentful Paint 1.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Minify JavaScript Potential savings of 59 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 1.3 s
First Meaningful Paint measures when the primary content of a page is visible
Defer offscreen images Potential savings of 8 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Tap targets are not sized appropriately 81% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements
Avoid chaining critical requests 6 chains found
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
First Contentful Paint 1.3 s
First Contentful Paint marks the time at which the first text or image is painted
Total Blocking Time 330 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds

Speed And Optimization Tips

Website speed has a huge impact on performance, affecting user experience, conversion rates and even rankings. ‪‬‬By reducing page load-times, users are less likely to get distracted and the search engines are more likely to reward you by ranking you
Title Website
Congratulations! Your title is optimized
Description Website
Warning! Your description is not optimized
Robots.txt
Warning! Your site not have a robots.txt file
Sitemap.xml
Warning! Not found a sitemap file for your website
SSL Secure
Congratulations! Your site have Support to HTTPS
Headings
Congratulations! You are using your H1 and H2 tags in your site
Blacklist
Congratulations! Your site is not listed in a blacklist
W3C Validator
Warning! Your site have errors W3C
Accelerated Mobile Pages (AMP)
Warning! Your site not have AMP Version
Domain Authority
Congratulations! Your Domain Authority is good
GZIP Compress
Warning! Your site not is compressed, this can make slower response for the visitors
Favicon
Warning! Your site not have a favicon
Broken Links
Congratulations! You not have broken links View links

Alexa Rank

224,764

Global Rank

255,377

United States
Traffic
Search

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/2 200 
date: Thu, 24 Sep 2020 09:19:44 GMT
content-type: text/html; charset=utf-8
set-cookie: __cfduid=d2e7a1f883f9fe57152b8bce09a8d04271600939184; expires=Sat, 24-Oct-20 09:19:44 GMT; path=/; domain=.backbonejs.org; HttpOnly; SameSite=Lax
last-modified: Tue, 19 Feb 2019 18:36:20 GMT
access-control-allow-origin: *
expires: Thu, 24 Sep 2020 04:22:55 GMT
cache-control: max-age=600
x-proxy-cache: MISS
x-github-request-id: B53A:2E72:1C20E16:220C825:5F6C1CC7
via: 1.1 varnish
age: 0
x-served-by: cache-yyz4535-YYZ
x-cache: HIT
x-cache-hits: 1
x-timer: S1600939185.725195,VS0,VE1
vary: Accept-Encoding
x-fastly-request-id: fc2d964be6da4c5afdd05bfbc83782ecb404e61c
cf-cache-status: DYNAMIC
cf-request-id: 0561026a500000cac81aad2200000001
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?lkg-colo=29&lkg-time=1600939185"}],"group":"cf-nel","max_age":604800}
nel: {"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 5d7b6cf08ffbcac8-YYZ
content-encoding: gzip

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