18.4 sec in total
562 ms
16.8 sec
1 sec
Visit sfletter.com now to see the best up-to-date SFLetter content for Kazakhstan and also check out these interesting facts you probably never knew about sfletter.com
SFLetter.com protects your message and attachments by one click. Email protection from interception and unauthorized actions of the recipient.
Visit sfletter.comWe analyzed Sfletter.com page load time and found that the first response time was 562 ms and then it took 17.8 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
sfletter.com performance score
name
value
score
weighting
Value10.6 s
0/100
10%
Value13.7 s
0/100
25%
Value18.0 s
0/100
10%
Value16,060 ms
0/100
30%
Value0.014
100/100
15%
Value28.8 s
0/100
10%
562 ms
889 ms
1045 ms
501 ms
1054 ms
Our browser made a total of 65 requests to load all elements on the main page. We found that 98% of them (64 requests) were addressed to the original Sfletter.com, 2% (1 request) were made to Mc.yandex.ru. The less responsive or slowest element that took the longest time to load (9.6 sec) belongs to the original domain Sfletter.com.
Page size can be reduced by 1.1 MB (55%)
2.0 MB
887.6 kB
In fact, the total size of Sfletter.com main page is 2.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 35% of websites need less resources to load. Javascripts take 901.7 kB which makes up the majority of the site volume.
Potential reduce by 47.5 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 47.5 kB or 77% of the original size.
Potential reduce by 93.2 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, SFLetter needs image optimization as it can save up to 93.2 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 685.9 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 685.9 kB or 76% of the original size.
Potential reduce by 264.0 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. Sfletter.com needs all CSS files to be minified and compressed as it can save up to 264.0 kB or 87% of the original size.
Number of requests can be reduced by 36 (62%)
58
22
The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SFLetter. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.
sfletter.com
562 ms
sfletter.com
889 ms
sfletter.com
1045 ms
app.css
501 ms
styles.css
1054 ms
eb.css
638 ms
animate.css
1044 ms
style.css
512 ms
jquery.datetimepicker.css
877 ms
style.css
639 ms
style.css
868 ms
send_protected_mail.css
842 ms
list.css
840 ms
jquery-ui-1.9.1.custom.css
1030 ms
registration.css
1023 ms
sf_registration.css
1048 ms
sf_feedback.css
1065 ms
modernizr.js
1330 ms
jquery.min.js
1168 ms
common.js
1179 ms
app.js
3473 ms
jstz.min.js
1190 ms
common.js
1077 ms
jquery.datetimepicker.js
1232 ms
moment.js
3562 ms
slides.js
1248 ms
sf_payment.js
1266 ms
sf_send_protected_mail.js
1427 ms
client.js
1488 ms
password.js
2044 ms
jquery-ui-1.9.1.custom.min.js
9570 ms
client.js
1622 ms
registration.js
1688 ms
sf_feedback.js
1852 ms
modalbox.css
1875 ms
modalbox.js
2025 ms
foundation.min.js
2058 ms
jquery.smooth-scroll.min.js
2190 ms
app.js
2614 ms
chrome_fix.js
1848 ms
sections.css
1514 ms
watch.js
11 ms
logo.svg
332 ms
lock.svg
322 ms
flag-ru.png
373 ms
flag-en.png
349 ms
sfletter.com
537 ms
sf_logo.svg
315 ms
mailbox.svg
367 ms
message.svg
355 ms
protect.svg
368 ms
sendmail.svg
484 ms
graph.svg
493 ms
help.svg
499 ms
reg.svg
495 ms
check.svg
534 ms
banner-bg.png
2392 ms
reg.svg
573 ms
checked.png
578 ms
business_bg.png
4579 ms
op300.woff
890 ms
op400.woff
615 ms
op700.woff
861 ms
modalbox.png
469 ms
blank.gif
491 ms
sfletter.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
sfletter.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
sfletter.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sfletter.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 Sfletter.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.
sfletter.com
Open Graph description is not detected on the main page of SFLetter. 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: