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Top Technologies

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Web Frameworks

19 alef.ir Last Updated: 9 months

Success 63% of passed verification steps
Warning 7% of total warning
Errors 30% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 82%
Best Practices Desktop Score 77%
SEO Desktop Score 90%
Progressive Web App Desktop Score 58%
Performance Mobile Score 52%
Best Practices Mobile Score 77%
SEO Mobile Score 96%
Progressive Web App Mobile Score 59%
Page Authority Authority 0%
Domain Authority Domain Authority 0%
Moz Rank 0.0/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 21 Characters
جامعه خبری تحلیلی الف
Meta Description 107 Characters
جامعه خبری تحلیلی الف - تازه‌ترین اخبار و تحلیل‌های سیاسی، اقتصادی، اجتماعی ایران و جهان را در الف بخوانید.
Effective URL 19 Characters
https://www.alef.ir
Excerpt Page content
جامعه خبری تحلیلی الف نیست بر لوح دلم جز الف قامت یار جامعه خبری تحلیلی الف شنبه ۷ دی ۱۳۹۸  ...
Keywords Cloud Density
انتشار68 برای50 ۱۳۹۸35 تکراری34 غیرقابل34 درباره24 گروه24 ایران22 اخبار22 مجلس20
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
انتشار 68
برای 50
۱۳۹۸ 35
تکراری 34
غیرقابل 34
درباره 24
گروه 24
ایران 22
اخبار 22
مجلس 20
Google Preview Your look like this in google search result
جامعه خبری تحلیلی الف
https://www.alef.ir
جامعه خبری تحلیلی الف - تازه‌ترین اخبار و تحلیل‌های سیاسی، اقتصادی، اجتماعی ایران و جهان را در الف بخوانید.
Robots.txt File Detected
Sitemap.xml File No Found
Page Size Code & Text Ratio
Document Size: ~245.35 KB
Code Size: ~177.13 KB
Text Size: ~68.22 KB Ratio: 27.81%

Estimation Traffic and Earnings

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Desktop

Desktop Screenshot
Avoid chaining critical requests 33 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
Avoid an excessive DOM size 2,298 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)
Minify JavaScript Potential savings of 66 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 1.6 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 141 requests • 2,195 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Use video formats for animated content Potential savings of 181 KB
Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes
Serve static assets with an efficient cache policy 125 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 50 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 1.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive
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
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
Minify CSS Potential savings of 5 KB
Minifying CSS files can reduce network payload sizes
Remove unused CSS Potential savings of 36 KB
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
Serve images in next-gen formats Potential savings of 292 KB
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
Reduce server response times (TTFB) Root document took 940 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 620 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 82 KB
Optimized images load faster and consume less cellular data
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
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.2 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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
Properly size images Potential savings of 375 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 2.3 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.6 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).
Avoids enormous network payloads Total size was 2,195 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.4 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.9 s
First Contentful Paint marks the time at which the first text or image is painted

Mobile

Mobile Screenshot
Total Blocking Time 470 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 1.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Defer offscreen images Potential savings of 260 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
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
Properly size images Potential savings of 4 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 5.8 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 6.5 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).
Avoids enormous network payloads Total size was 1,963 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 4.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.9 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 33 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
Avoid an excessive DOM size 2,208 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)
Minify JavaScript Potential savings of 66 KB
Minifying JavaScript files can reduce payload sizes and script parse time
First Meaningful Paint 5.7 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 132 requests • 1,963 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Use video formats for animated content Potential savings of 136 KB
Large GIFs are inefficient for delivering animated content. Consider using MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF to save network bytes
Serve static assets with an efficient cache policy 119 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 190 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 8.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive
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
Estimated Input Latency 30 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
First Contentful Paint (3G) 5533 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Minify CSS Potential savings of 5 KB
Minifying CSS files can reduce network payload sizes
Tap targets are not sized appropriately 51% 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
Document uses legible font sizes 90.34% 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
Remove unused CSS Potential savings of 36 KB
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
Serve images in next-gen formats Potential savings of 306 KB
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
Reduce server response times (TTFB) Root document took 640 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 1,470 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Efficiently encode images Potential savings of 82 KB
Optimized images load faster and consume less cellular data
Minimize third-party usage Third-party code blocked the main thread for 90 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

Speed And Optimization Tips

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Alexa Rank

0

Local Rank: / Users: / PageViews:

Global Rank

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
Date: Sat, 28 Dec 2019 13:30:05 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 36162
Connection: keep-alive
Keep-Alive: timeout=65
Strict-Transport-Security: max-age=off; preload
Expires: Sat, 28 Dec 2019 13:30:35 GMT
Pragma: no-cache
Vary: Accept-Encoding
Content-Encoding: gzip
Cache-Control: max-age=30
Age: 0
Server: ArvanCloud
AR-PoweredBy: Arvan Cloud (arvancloud.com)
ar-sid: 5100
AR-ATIME: 0.000
AR-CACHE: HIT
AR-Request-ID: aef1db2da1c27c333db8683cd06bc728
Accept-Ranges: bytes
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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