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jacobvanjan.nl screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 87

    SEO

    Google-friendlier than
    65% of websites

jacobvanjan.nl

Koelewijn Jacob van Jan | Paling rokerij en zeevisgroothandel | Al meer dan 100 jaar

Page Load Speed

3.3 sec in total

First Response

222 ms

Resources Loaded

2.3 sec

Page Rendered

756 ms

jacobvanjan.nl screenshot

About Website

Welcome to jacobvanjan.nl homepage info - get ready to check Jacob Van Jan best content right away, or after learning these important things about jacobvanjan.nl

Rokerij Jacob van Jan is één van de oudste en meest bekende visrokerijen van Spakenburg en Nederland.

Visit jacobvanjan.nl

Key Findings

We analyzed Jacobvanjan.nl page load time and found that the first response time was 222 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

jacobvanjan.nl performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value9.1 s

1/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value140 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.027

100/100

15%

TTI (Time to Interactive)

Value6.9 s

54/100

10%

Network Requests Diagram

jacobvanjan.nl

222 ms

www.jacobvanjan.nl

489 ms

css2

81 ms

css2

89 ms

bootstrap.min.css

71 ms

Our browser made a total of 121 requests to load all elements on the main page. We found that 16% of them (19 requests) were addressed to the original Jacobvanjan.nl, 63% (76 requests) were made to Ka-p.fontawesome.com and 9% (11 requests) were made to Midmid.blob.core.windows.net. The less responsive or slowest element that took the longest time to load (759 ms) relates to the external source Midmid.blob.core.windows.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 334.3 kB (21%)

Content Size

1.6 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jacobvanjan.nl main page is 1.6 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 11.5 kB

  • Original 16.4 kB
  • After minification 14.6 kB
  • After compression 4.9 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 1.8 kB, which is 11% 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 11.5 kB or 70% of the original size.

Image Optimization

-21%

Potential reduce by 301.6 kB

  • Original 1.4 MB
  • After minification 1.1 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. Obviously, Jacob Van Jan needs image optimization as it can save up to 301.6 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-74%

Potential reduce by 15.0 kB

  • Original 20.4 kB
  • After minification 16.9 kB
  • After compression 5.4 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 15.0 kB or 74% of the original size.

CSS Optimization

-4%

Potential reduce by 6.1 kB

  • Original 147.1 kB
  • After minification 146.7 kB
  • After compression 141.0 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. Jacobvanjan.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 30 (73%)

Requests Now

41

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jacob Van Jan. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jacobvanjan.nl

jacobvanjan.nl

222 ms

www.jacobvanjan.nl

www.jacobvanjan.nl

489 ms

css2

css2

81 ms

css2

css2

89 ms

bootstrap.min.css

bootstrap.min.css

71 ms

a4b00b0bf2.css

a4b00b0bf2.css

100 ms

animate.min.css

animate.min.css

67 ms

defaults.css

defaults.css

90 ms

layout.css

layout.css

197 ms

layout.header.css

layout.header.css

291 ms

layout.footer.css

layout.footer.css

288 ms

search.css

search.css

374 ms

page.css

page.css

374 ms

collection.item.css

collection.item.css

378 ms

product.item.css

product.item.css

378 ms

theme-variables-a43721.css

theme-variables-a43721.css

362 ms

experience.css

experience.css

461 ms

custom.css

custom.css

365 ms

js

js

113 ms

jquery-3.6.0.min.js

jquery-3.6.0.min.js

59 ms

bootstrap.bundle.min.js

bootstrap.bundle.min.js

79 ms

submit.js

submit.js

484 ms

submit.files.js

submit.files.js

535 ms

address.js

address.js

536 ms

validation.js

validation.js

536 ms

shared.js

shared.js

535 ms

init.js

init.js

571 ms

search.js

search.js

572 ms

page.js

page.js

571 ms

pro.min.css

pro.min.css

67 ms

pro-v4-shims.min.css

pro-v4-shims.min.css

102 ms

pro-v5-font-face.min.css

pro-v5-font-face.min.css

119 ms

pro-v4-font-face.min.css

pro-v4-font-face.min.css

118 ms

css

css

16 ms

jacobvanjan_410bee_md.png

jacobvanjan_410bee_md.png

98 ms

waves.png

waves.png

483 ms

paling.png

paling.png

675 ms

555617_55562e.jpg

555617_55562e.jpg

433 ms

555ea3_555ef0.jpg

555ea3_555ef0.jpg

434 ms

555ea4_555ef1.jpg

555ea4_555ef1.jpg

515 ms

555ea5_555ef2.jpg

555ea5_555ef2.jpg

520 ms

waves-filled.png

waves-filled.png

759 ms

esf.png

esf.png

757 ms

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73 ms

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35 ms

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35 ms

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35 ms

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69 ms

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56 ms

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63 ms

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70 ms

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56 ms

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55 ms

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71 ms

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79 ms

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89 ms

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89 ms

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89 ms

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93 ms

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93 ms

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92 ms

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107 ms

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101 ms

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109 ms

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106 ms

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110 ms

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116 ms

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120 ms

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135 ms

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129 ms

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166 ms

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140 ms

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pro-fa-sharp-regular-400-5.ttf

136 ms

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138 ms

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189 ms

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146 ms

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151 ms

pro-fa-sharp-regular-400-10.ttf

pro-fa-sharp-regular-400-10.ttf

156 ms

pro-fa-sharp-regular-400-11.ttf

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156 ms

pro-fa-sharp-regular-400-12.ttf

pro-fa-sharp-regular-400-12.ttf

167 ms

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74 ms

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1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvoooCP.ttf

75 ms

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75 ms

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1Ptxg8zYS_SKggPN4iEgvnHyvveLxVsEpYCP.ttf

82 ms

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1Ptxg8zYS_SKggPN4iEgvnHyvveLxVs9pYCP.ttf

82 ms

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144 ms

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144 ms

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158 ms

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137 ms

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133 ms

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141 ms

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138 ms

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138 ms

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140 ms

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133 ms

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131 ms

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128 ms

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127 ms

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135 ms

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139 ms

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133 ms

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122 ms

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132 ms

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128 ms

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137 ms

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134 ms

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136 ms

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133 ms

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146 ms

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128 ms

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131 ms

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123 ms

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128 ms

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137 ms

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128 ms

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129 ms

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129 ms

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123 ms

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115 ms

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121 ms

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125 ms

Accessibility Review

jacobvanjan.nl accessibility score

81

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

jacobvanjan.nl best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

jacobvanjan.nl SEO score

87

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Jacobvanjan.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 Jacobvanjan.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

jacobvanjan.nl

Open Graph data is detected on the main page of Jacob Van Jan. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: