Tools & Wizards About Us
celestron.ru screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

celestron.ru

Celestron - купить телескоп, микроскоп, бинокль, зрительную трубу

Page Load Speed

5.6 sec in total

First Response

767 ms

Resources Loaded

4.7 sec

Page Rendered

180 ms

celestron.ru screenshot

About Website

Visit celestron.ru now to see the best up-to-date Celestron content for Russia and also check out these interesting facts you probably never knew about celestron.ru

В фирменном магазине CELESTRON.RU (Селестрон.ру) вы можете купить телескоп, бинокль, микроскоп, зрительную трубу другую оптику. Покупая у нас, вы можете быть уверены в том, что получите оригинальную с...

Visit celestron.ru

Key Findings

We analyzed Celestron.ru page load time and found that the first response time was 767 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

celestron.ru performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.8 s

1/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value9.4 s

12/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.279

43/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

Network Requests Diagram

celestron.ru

767 ms

js

60 ms

captchaStyle.css

188 ms

system.css

277 ms

general.css

286 ms

Our browser made a total of 140 requests to load all elements on the main page. We found that 94% of them (131 requests) were addressed to the original Celestron.ru, 1% (2 requests) were made to Googletagmanager.com and 1% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Celestron.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 132.7 kB (15%)

Content Size

878.9 kB

After Optimization

746.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Celestron.ru main page is 878.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Images take 600.0 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 55.7 kB

  • Original 66.5 kB
  • After minification 56.0 kB
  • After compression 10.9 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. This page needs HTML code to be minified as it can gain 10.6 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 55.7 kB or 84% of the original size.

Image Optimization

-9%

Potential reduce by 52.3 kB

  • Original 600.0 kB
  • After minification 547.7 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. Celestron images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 12.4 kB

  • Original 181.6 kB
  • After minification 181.6 kB
  • After compression 169.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-40%

Potential reduce by 12.3 kB

  • Original 30.7 kB
  • After minification 30.6 kB
  • After compression 18.4 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. Celestron.ru needs all CSS files to be minified and compressed as it can save up to 12.3 kB or 40% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (36%)

Requests Now

137

After Optimization

88

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 137 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Celestron. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

celestron.ru

celestron.ru

767 ms

js

js

60 ms

captchaStyle.css

captchaStyle.css

188 ms

system.css

system.css

277 ms

general.css

general.css

286 ms

reset.css

reset.css

286 ms

typography.css

typography.css

286 ms

forms.css

forms.css

290 ms

modules.css

modules.css

291 ms

joomla.css

joomla.css

414 ms

layout.css

layout.css

427 ms

icetheme.css

icetheme.css

429 ms

style.css

style.css

428 ms

style.css

style.css

430 ms

style.css

style.css

430 ms

default_icemegamenu.css

default_icemegamenu.css

553 ms

style.css

style.css

568 ms

mootools-core.js

mootools-core.js

715 ms

core.js

core.js

568 ms

caption.js

caption.js

570 ms

mootools-more.js

mootools-more.js

866 ms

script_16.js

script_16.js

691 ms

script_16.js

script_16.js

710 ms

jquery-1.6.2.min.js

jquery-1.6.2.min.js

857 ms

jquery-noconflict.js

jquery-noconflict.js

711 ms

jquery.media.js

jquery.media.js

829 ms

functions.js

functions.js

852 ms

validateForm.js

validateForm.js

853 ms

icemegamenu.js

icemegamenu.js

856 ms

style1.css

style1.css

966 ms

css

css

23 ms

js

js

48 ms

analytics.js

analytics.js

16 ms

collect

collect

12 ms

collect

collect

64 ms

ga-audiences

ga-audiences

34 ms

system.css

system.css

722 ms

bg.png

bg.png

142 ms

topbar_line.png

topbar_line.png

142 ms

topbar.png

topbar.png

143 ms

contact_nr.png

contact_nr.png

143 ms

logo_celestron_360x60.png

logo_celestron_360x60.png

139 ms

cart_pin.png

cart_pin.png

143 ms

nav.png

nav.png

266 ms

active.png

active.png

265 ms

border.png

border.png

271 ms

bg.png

bg.png

271 ms

ptRHTiWdbvZIDNjBzrc.ttf

ptRHTiWdbvZIDNjBzrc.ttf

9 ms

DQ1nvMUV4AAlKCo.jpg

DQ1nvMUV4AAlKCo.jpg

267 ms

next.png

next.png

267 ms

full_44112_30mm_tabletop_spotting_scope_4_570x380_2x1.jpg

full_44112_30mm_tabletop_spotting_scope_4_570x380_2x1.jpg

397 ms

12098_NexStar_Evolution_8.jpg

12098_NexStar_Evolution_8.jpg

400 ms

taganskiy-tsennik-october-2020.jpg

taganskiy-tsennik-october-2020.jpg

405 ms

44347_TetraView_front_570x380_3x.jpg

44347_TetraView_front_570x380_3x.jpg

406 ms

050234523066_Regal_M2_100ED_52306_1_570x380_2x.jpg

050234523066_Regal_M2_100ED_52306_1_570x380_2x.jpg

407 ms

weather-station.jpg

weather-station.jpg

408 ms

5555.jpg

5555.jpg

534 ms

full_44112_30mm_tabletop_spotting_scope_4_570x380_2x.jpg

full_44112_30mm_tabletop_spotting_scope_4_570x380_2x.jpg

541 ms

telescope.jpg

telescope.jpg

557 ms

firstscope.jpg

firstscope.jpg

547 ms

travelscope.jpg

travelscope.jpg

548 ms

powerseeker.jpg

powerseeker.jpg

549 ms

astromaster.jpg

astromaster.jpg

672 ms

explorascope_series.jpg

explorascope_series.jpg

682 ms

Inspire_category.jpg

Inspire_category.jpg

691 ms

22466_PopSci_Celestron_StarSense_Explorer_DX_5in_SCT_12_570x380_3x.jpg

22466_PopSci_Celestron_StarSense_Explorer_DX_5in_SCT_12_570x380_3x.jpg

689 ms

lcm.jpg

lcm.jpg

689 ms

slt.jpg

slt.jpg

698 ms

22202_AstroFi_102_1.gif

22202_AstroFi_102_1.gif

809 ms

se.jpg

se.jpg

822 ms

evolution.jpg

evolution.jpg

829 ms

cpc.jpg

cpc.jpg

830 ms

advancedvx.jpg

advancedvx.jpg

832 ms

CGEM_II.gif

CGEM_II.gif

838 ms

watch.js

watch.js

21 ms

opticaltube.jpg

opticaltube.jpg

831 ms

accsesuares.jpg

accsesuares.jpg

845 ms

cf6945f4cc3c6218f1c5b0662b97fc8c1.jpg

cf6945f4cc3c6218f1c5b0662b97fc8c1.jpg

852 ms

ocular.jpg

ocular.jpg

852 ms

omny-okular.jpg

omny-okular.jpg

852 ms

xcel-okular.jpg

xcel-okular.jpg

858 ms

luminos.jpg

luminos.jpg

829 ms

special.jpg

special.jpg

848 ms

baader-okular.jpg

baader-okular.jpg

852 ms

45-mm-morpheus-76-weitwinkel-okular-cdb.jpg

45-mm-morpheus-76-weitwinkel-okular-cdb.jpg

852 ms

optical.jpg

optical.jpg

852 ms

filtres.jpg

filtres.jpg

857 ms

foto.jpg

foto.jpg

828 ms

maunt.jpg

maunt.jpg

847 ms

power.jpg

power.jpg

852 ms

other.jpg

other.jpg

852 ms

microscope.jpg

microscope.jpg

852 ms

microscope-bio.jpg

microscope-bio.jpg

858 ms

stereo-2.jpg

stereo-2.jpg

829 ms

microscope-digital.jpg

microscope-digital.jpg

847 ms

nabor-preparatov.jpg

nabor-preparatov.jpg

851 ms

binoculars.jpg

binoculars.jpg

850 ms

monoculars.jpg

monoculars.jpg

851 ms

upcloseg2.jpg

upcloseg2.jpg

849 ms

outlandx.jpg

outlandx.jpg

829 ms

naturedx.jpg

naturedx.jpg

847 ms

skymaster.jpg

skymaster.jpg

849 ms

sporting-scope.jpg

sporting-scope.jpg

849 ms

44112_30mm_tabletop_spotting_scope_1_570x380_2x.jpg

44112_30mm_tabletop_spotting_scope_1_570x380_2x.jpg

849 ms

thumb_52322_LandScout_12_36x60_2.jpg

thumb_52322_LandScout_12_36x60_2.jpg

849 ms

thumb_52268_C90_Mak_2.jpg

thumb_52268_C90_Mak_2.jpg

829 ms

thumb_52250-ultima-80-45-1.jpg

thumb_52250-ultima-80-45-1.jpg

847 ms

TrailSeeker_100mm.jpg

TrailSeeker_100mm.jpg

850 ms

Regal_M2.jpg

Regal_M2.jpg

849 ms

52307_Hummingbird_7_22x50mm_9.jpg

52307_Hummingbird_7_22x50mm_9.jpg

849 ms

pogognaistancia.jpg

pogognaistancia.jpg

849 ms

archives-1.gif

archives-1.gif

829 ms

go_youtube_celestron.png

go_youtube_celestron.png

848 ms

go_appstore_celestron_1.png

go_appstore_celestron_1.png

850 ms

go_googleplay_celestron.png

go_googleplay_celestron.png

849 ms

microscope_kit.jpg

microscope_kit.jpg

1131 ms

nexstargt_1.jpg

nexstargt_1.jpg

849 ms

28kit-icetabs.jpg

28kit-icetabs.jpg

965 ms

microscope_kit.jpg

microscope_kit.jpg

848 ms

nexstargt_1.jpg

nexstargt_1.jpg

850 ms

28kit-icetabs.jpg

28kit-icetabs.jpg

850 ms

notice_waning.jpg

notice_waning.jpg

856 ms

sale_red.gif

sale_red.gif

971 ms

full_44320-1.jpg

full_44320-1.jpg

882 ms

full_44113_kids_microscope_kit_with_bonus_telescope_attachment_5_570x380_2x.jpg

full_44113_kids_microscope_kit_with_bonus_telescope_attachment_5_570x380_2x.jpg

861 ms

full_44112_30mm_tabletop_spotting_scope_1_570x380_2x.jpg

full_44112_30mm_tabletop_spotting_scope_1_570x380_2x.jpg

857 ms

full_47020-homecast-weather-station-lit-1.jpg

full_47020-homecast-weather-station-lit-1.jpg

934 ms

full_21008-ps40-7.jpg

full_21008-ps40-7.jpg

977 ms

full_93230-1.jpg

full_93230-1.jpg

984 ms

full_2967000-lsa-01.jpg

full_2967000-lsa-01.jpg

1026 ms

full_1508155-1.jpg

full_1508155-1.jpg

861 ms

full_21038_TRAVEL_SCOPE-50_1.jpg

full_21038_TRAVEL_SCOPE-50_1.jpg

858 ms

arrows.png

arrows.png

930 ms

notice_arrow_t.png

notice_arrow_t.png

977 ms

notice_arrow_b.png

notice_arrow_b.png

985 ms

dot.png

dot.png

868 ms

loading.gif

loading.gif

927 ms

copyright.png

copyright.png

978 ms

icetheme.png

icetheme.png

989 ms

celestron.ru

celestron.ru

356 ms

Accessibility Review

celestron.ru accessibility score

58

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

celestron.ru best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

celestron.ru SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Celestron.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Celestron.ru 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.

Social Sharing Optimization

celestron.ru

Open Graph description is not detected on the main page of Celestron. 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: