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Web Frameworks

26 ef.co.id Last Updated: 2 months

Success 55% of passed verification steps
Warning 15% of total warning
Errors 30% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 78%
Best Practices Desktop Score 79%
SEO Desktop Score 100%
Progressive Web App Desktop Score 26%
Performance Mobile Score 26%
Best Practices Mobile Score 79%
SEO Mobile Score 100%
Progressive Web App Mobile Score 29%
Page Authority Authority 43%
Domain Authority Domain Authority 37%
Moz Rank 4.3/10
Bounce Rate Rate 0%
Title Tag 49 Characters
BELAJAR BAHASA INGGRIS CEPAT DENGAN ENGLISH FIRST
Meta Description 301 Characters
EF English First or Education first is an education institution with international standard since 1965 which offers the best option in Indonesia for Learning English Language, High School Abroad, Study Abroad, Language Homestay, International Boarding School, and University Preparation Program Abroad
Effective URL 20 Characters
https://www.ef.co.id
Excerpt Page content
Belajar Bahasa Inggris Cepat dengan English First ...
Keywords Cloud Density
bahasa26 inggris16 program15 untuk10 belajar9 kursus9 negeri8 luar8 dengan7 kami6
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
bahasa 26
inggris 16
program 15
untuk 10
belajar 9
kursus 9
negeri 8
luar 8
dengan 7
kami 6
Google Preview Your look like this in google search result
BELAJAR BAHASA INGGRIS CEPAT DENGAN ENGLISH FIRST
https://www.ef.co.id
EF English First or Education first is an education institution with international standard since 1965 which offers the best option in Indonesia for L
Robots.txt File Detected
Sitemap.xml File No Found
Page Size Code & Text Ratio
Document Size: ~69.06 KB
Code Size: ~39.87 KB
Text Size: ~29.19 KB Ratio: 42.27%

Social Data

Delicious Total: 0
Facebook Total: 9,305
Google Total: 0
Linkedin Total: 0
Pinterest Total: 0
Stumbleupon Total: 0
Tumblr Total: 0
Vk Total: 0

Estimation Traffic and Earnings

41,405
Unique Visits
Daily
76,599
Pages Views
Daily
$74
Income
Daily
1,159,340
Unique Visits
Monthly
2,183,072
Pages Views
Monthly
$1,850
Income
Monthly
13,415,220
Unique Visits
Yearly
25,737,264
Pages Views
Yearly
$19,536
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
Time to Interactive 2.3 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Avoid chaining critical requests 14 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
Includes front-end JavaScript libraries with known security vulnerabilities 4 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Minimizes main-thread work 1.7 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 210 ms
Keep the server response time for the main document short because all other requests depend on it
User Timing marks and measures 2 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Estimated Input Latency 20 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
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
Eliminate render-blocking resources Potential savings of 0 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
First CPU Idle 1.8 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/).
Avoid large layout shifts 1 element found
These DOM elements contribute most to the CLS of the page.
Avoid an excessive DOM size 1,901 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)
Efficiently encode images Potential savings of 9 KiB
Optimized images load faster and consume less cellular data
Keep request counts low and transfer sizes small 104 requests • 1,488 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
JavaScript execution time 0.7 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Minimize third-party usage Third-party code blocked the main thread for 40 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
Avoid serving legacy JavaScript to modern browsers Potential savings of 20 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
Max Potential First Input Delay 70 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
First Contentful Paint 0.9 s
First Contentful Paint marks the time at which the first text or image is painted
Serve images in next-gen formats Potential savings of 183 KiB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Largest Contentful Paint 2.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Remove unused CSS Potential savings of 98 KiB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Preload key requests Potential savings of 520 ms
Consider using `<link rel=preload>` to prioritize fetching resources that are currently requested later in page load
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
Avoids enormous network payloads Total size was 1,488 KiB
Large network payloads cost users real money and are highly correlated with long load times
Speed Index 1.7 s
Speed Index shows how quickly the contents of a page are visibly populated
Avoid long main-thread tasks 4 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 13.8 s
A fast page load over a cellular network ensures a good mobile user experience
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
Remove unused JavaScript Potential savings of 309 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Minify JavaScript Potential savings of 13 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
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 33 resources found
A long cache lifetime can speed up repeat visits to your page
Total Blocking Time 20 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
First Meaningful Paint 0.9 s
First Meaningful Paint measures when the primary content of a page is visible

Mobile

Mobile Screenshot
Avoid an excessive DOM size 1,890 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)
Largest Contentful Paint element 1 element found
This is the largest contentful element painted within the viewport
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 20 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
Preload key requests Potential savings of 4,080 ms
Consider using `<link rel=preload>` to prioritize fetching resources that are currently requested later in page load
Avoid large layout shifts 2 elements found
These DOM elements contribute most to the CLS of the page.
Remove unused JavaScript Potential savings of 308 KiB
Remove unused JavaScript to reduce bytes consumed by network activity
Page load is not fast enough on mobile networks Interactive at 12.9 s
A fast page load over a cellular network ensures a good mobile user experience
First CPU Idle 8.0 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/).
Minify JavaScript Potential savings of 13 KiB
Minifying JavaScript files can reduce payload sizes and script parse time
First Contentful Paint 4.0 s
First Contentful Paint marks the time at which the first text or image is painted
Initial server response time was short Root document took 50 ms
Keep the server response time for the main document short because all other requests depend on it
Estimated Input Latency 70 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
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
User Timing marks and measures 2 user timings
Consider instrumenting your app with the User Timing API to measure your app's real-world performance during key user experiences
Reduce the impact of third-party code Third-party code blocked the main thread for 850 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
Reduce JavaScript execution time 3.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Remove unused CSS Potential savings of 99 KiB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Time to Interactive 12.9 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Eliminate render-blocking resources Potential savings of 900 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Document uses legible font sizes 100% 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
Largest Contentful Paint 10.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted
Tap targets are sized appropriately 100% 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
Speed Index 6.3 s
Speed Index shows how quickly the contents of a page are visibly populated
First Meaningful Paint 5.3 s
First Meaningful Paint measures when the primary content of a page is visible
First Contentful Paint (3G) 8415 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Efficiently encode images Potential savings of 92 KiB
Optimized images load faster and consume less cellular data
Minimize main-thread work 5.2 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
Keep request counts low and transfer sizes small 103 requests • 1,567 KiB
To set budgets for the quantity and size of page resources, add a budget.json file
Max Potential First Input Delay 450 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task
Avoid chaining critical requests 14 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
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
Avoid long main-thread tasks 20 long tasks found
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay
Includes front-end JavaScript libraries with known security vulnerabilities 4 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Serve static assets with an efficient cache policy 34 resources found
A long cache lifetime can speed up repeat visits to your page
Total Blocking Time 930 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds
Serve images in next-gen formats Potential savings of 306 KiB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Avoids enormous network payloads Total size was 1,567 KiB
Large network payloads cost users real money and are highly correlated with long load times

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
Congratulations! Your site 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
Congratulations! Your website appears to have a favicon.

Alexa Rank

68,314

Global Rank

896

Indonesia
Traffic
Search

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/2 200 
date: Fri, 25 Sep 2020 07:46:26 GMT
content-type: text/html; charset=utf-8
set-cookie: __cfduid=d12180e68f9d313bc338c2a80c6ac9e301601019986; expires=Sun, 25-Oct-20 07:46:26 GMT; path=/; domain=.www.ef.co.id; HttpOnly; SameSite=Lax
cf-ray: 5d8321a519e7f991-YYZ
access-control-allow-origin: *
age: 0
cache-control: max-age=604800, stale-while-revalidate=3600, stale-if-error=3600
last-modified: Thu, 17 Sep 2020 21:21:32 GMT
strict-transport-security: max-age=31536000; includeSubDomains
vary: Accept-Encoding
cf-cache-status: HIT
access-control-allow-headers: Content-Type
cf-request-id: 0565d35b320000f991fe14f200000001
ef-worker-version: 2.8.1-main
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
isexcludefolderloop: In
loggingitemloop: In
logintofilesystemfn: In
logsitecoreloop: Inloop
x-content-type-options: nosniff
x-powered-by-srv: Web2
x-supercache: hit
x-supercache-key: website\&mc=id&type=1&browser=std
x-ua-compatible: IE=edge,chrome=1
x-xss-protection: 1; mode=block
server: cloudflare
content-encoding: gzip
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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