Tools & Wizards About Us
blitzoptiek.nl screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    77% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

blitzoptiek.nl

Opticien in Barneveld, Langstraat - Voor een gratis oogmeting | Eye Wish Opticiens

Page Load Speed

13 sec in total

First Response

535 ms

Resources Loaded

11.8 sec

Page Rendered

716 ms

blitzoptiek.nl screenshot

About Website

Visit blitzoptiek.nl now to see the best up-to-date Blitzoptiek content and also check out these interesting facts you probably never knew about blitzoptiek.nl

Bij Eye Wish Opticiens in Barneveld vindt u altijd de bril die bij u past. Bij ons kiest u uit het meest gevarieerde assortiment brillen, zonnebrillen, lenzen en leesbrillen.

Visit blitzoptiek.nl

Key Findings

We analyzed Blitzoptiek.nl page load time and found that the first response time was 535 ms and then it took 12.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

blitzoptiek.nl performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value11.0 s

0/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.039

99/100

15%

TTI (Time to Interactive)

Value3.3 s

94/100

10%

Network Requests Diagram

blitzoptiek.nl

535 ms

www.blitzoptiek.nl

6226 ms

wp-emoji-release.min.js

139 ms

font-awesome.min.css

259 ms

bootstrap.min.css

399 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 60% of them (34 requests) were addressed to the original Blitzoptiek.nl, 11% (6 requests) were made to Image.isu.pub and 7% (4 requests) were made to E.issuu.com. The less responsive or slowest element that took the longest time to load (6.2 sec) belongs to the original domain Blitzoptiek.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 336.2 kB (20%)

Content Size

1.7 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blitzoptiek.nl main page is 1.7 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. 40% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-63%

Potential reduce by 9.9 kB

  • Original 15.7 kB
  • After minification 14.2 kB
  • After compression 5.8 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 9.9 kB or 63% of the original size.

Image Optimization

-5%

Potential reduce by 58.4 kB

  • Original 1.3 MB
  • After minification 1.2 MB

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. Blitzoptiek images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 227.0 kB

  • Original 356.3 kB
  • After minification 349.5 kB
  • After compression 129.3 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 227.0 kB or 64% of the original size.

CSS Optimization

-77%

Potential reduce by 40.9 kB

  • Original 53.1 kB
  • After minification 50.7 kB
  • After compression 12.2 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. Blitzoptiek.nl needs all CSS files to be minified and compressed as it can save up to 40.9 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (32%)

Requests Now

50

After Optimization

34

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blitzoptiek. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

blitzoptiek.nl

blitzoptiek.nl

535 ms

www.blitzoptiek.nl

www.blitzoptiek.nl

6226 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

139 ms

font-awesome.min.css

font-awesome.min.css

259 ms

bootstrap.min.css

bootstrap.min.css

399 ms

style.css

style.css

403 ms

style.css

style.css

406 ms

jquery.js

jquery.js

624 ms

jquery-migrate.min.js

jquery-migrate.min.js

408 ms

embed.js

embed.js

237 ms

jquery.flexslider-min.js

jquery.flexslider-min.js

138 ms

script.js

script.js

470 ms

logo.png

logo.png

2916 ms

Slide1170x600px-900x465.jpg

Slide1170x600px-900x465.jpg

3974 ms

Slide1170x600px2-900x465.jpg

Slide1170x600px2-900x465.jpg

2579 ms

Slide1170x600px4-900x465.jpg

Slide1170x600px4-900x465.jpg

4207 ms

Slide1170x600px6-900x465.jpg

Slide1170x600px6-900x465.jpg

1881 ms

Slide1170x600px7-900x465.jpg

Slide1170x600px7-900x465.jpg

3977 ms

bril.svg

bril.svg

2014 ms

zonnebril.svg

zonnebril.svg

2172 ms

oog.svg

oog.svg

2554 ms

p01_m.html

p01_m.html

2635 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

691 ms

13003356.json

13003356.json

93 ms

embed-runner.js

embed-runner.js

690 ms

page_1.jpg

page_1.jpg

1404 ms

quant.js

quant.js

306 ms

index.css

index.css

52 ms

css

css

182 ms

document.xml

document.xml

195 ms

f8dbc32e485770028af8f3e1d7c8c589

f8dbc32e485770028af8f3e1d7c8c589

166 ms

page_2.jpg

page_2.jpg

2241 ms

pixel;r=939492818;a=p-5cvC4NOeGmtNA;fpan=1;fpa=P0-1333835644-1460130709037;ns=1;ce=1;cm=;je=0;sr=1024x768x32;enc=n;dst=0;et=1460130709036;tzo=-180;ref=http%3A%2F%2Fwww.blitzoptiek.nl%2F;url=about%3Ablank;ogl=

pixel;r=939492818;a=p-5cvC4NOeGmtNA;fpan=1;fpa=P0-1333835644-1460130709037;ns=1;ce=1;cm=;je=0;sr=1024x768x32;enc=n;dst=0;et=1460130709036;tzo=-180;ref=http%3A%2F%2Fwww.blitzoptiek.nl%2F;url=about%3Ablank;ogl=

216 ms

initial

initial

183 ms

initial

initial

245 ms

page_3.jpg

page_3.jpg

424 ms

page_1_thumb_large.jpg

page_1_thumb_large.jpg

440 ms

page_1_thumb_large.jpg

page_1_thumb_large.jpg

395 ms

page_1_thumb_large.jpg

page_1_thumb_large.jpg

527 ms

cJZKeOuBrn4kERxqtaUH3SZ2oysoEQEeKwjgmXLRnTc.ttf

cJZKeOuBrn4kERxqtaUH3SZ2oysoEQEeKwjgmXLRnTc.ttf

382 ms

MTP_ySUJH_bn48VBG8sNSpS3E-kSBmtLoNJPDtbj2Pk.ttf

MTP_ySUJH_bn48VBG8sNSpS3E-kSBmtLoNJPDtbj2Pk.ttf

381 ms

modernizr-1.5.min.js

modernizr-1.5.min.js

259 ms

p2q_embed_object.js

p2q_embed_object.js

232 ms

pano2vr_player.js

pano2vr_player.js

707 ms

skin.js

skin.js

827 ms

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

485 ms

ctr_info.png

ctr_info.png

450 ms

close.png

close.png

220 ms

close_0.png

close_0.png

183 ms

sv_logo_untenrechts.png

sv_logo_untenrechts.png

180 ms

loader_image.png

loader_image.png

354 ms

bar.png

bar.png

354 ms

tip.png

tip.png

364 ms

bild_24.png

bild_24.png

366 ms

sv_b_0_empty_288x32.png

sv_b_0_empty_288x32.png

367 ms

close__o.png

close__o.png

404 ms

close__a.png

close__a.png

420 ms

Accessibility Review

blitzoptiek.nl accessibility score

87

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

blitzoptiek.nl best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

blitzoptiek.nl SEO score

86

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

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

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

blitzoptiek.nl

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