cleantechnology.nl

Tasks

Select one version of your site as main and make a redirect from other versions to that one.
Avoid using deprecated HTML tags.
Implement the viewport meta tag.
Use "H" tags.

SEO

URL

Domain : www.cleantechnology.nl/

Character length : 23

Title

cleantechnology.nl

Keywords (meta keywords)

Good! The website does not use “meta keywords”.

Open Graph Protocol

Error! The website does not use the OG (Open Graph) protocol.

Dublin Core

Dublin Core is not used

Underscores in the URLs

Good! No underscore (_) found in the URLs.

Search engine friendly URLs

Good! The website uses SEO friendly URLs.

Checking the robots.txt file

There is robots.txt file.
https://cleantechnology.nl/robots.txt

User-agent	Disallowed for the search engines
*	/subfiles/

Social

Social Engagement

No info found.

Content

Doctype

HTML 4.01 Frameset

Encoding

Error! The character encoding setting is missing!

Language

Error! No language localization is found.

Title

cleantechnology.nl

Character length : 18

Good! The title’s length is between 10 and 70 characters.

Text / HTML ratio

Ratio : 0%

Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.

Headings

H1	H2	H3	H4	H5	H6
0	0	0	0	0	0

No "H" tags found

Heading structure in the source code

Word cloud

Keyword matrix

word	title	descriptions	heading

404 Page

The website has a 404 error page.

Flash content

Good! The website does not have any flash contents.

Frame

Error! The website uses iFrame solutions. This type of contents are not indexed by Google.

Images

We found 0 images on this web page.

Good! Every image has an alternative text attributes set on this website.

Technologies

Mobile optimization

This website is optimal for mobile devices!

Detected applications

	Drupal	CMS
	Google Analytics	Analytics
	Google Font API	Font Scripts
	Google Tag Manager	Tag Managers
	Hotjar	Analytics
	Lightbox	JavaScript Frameworks
	Modernizr	JavaScript Frameworks
	Twitter	Widgets
	Twitter Bootstrap	Web Frameworks
	Vue.js	JavaScript Frameworks
	YouTube	Video Players
	jQuery	JavaScript Frameworks
	jQuery UI	JavaScript Frameworks
	PHP	Programming Languages

Deprecated HTML elements

Error! Deprecated HTML tags are used on this webpage. You should improve your website.

Deprecated HTML tags	Occurrences
<noframes>	1
<frameset>	1
<frame>	1

Redirection (www / not www)

Error! The web address is accessible with and without www!

Deprecated HTML elements

Error! Deprecated HTML tags are used on this webpage. You should improve your website.

Deprecated HTML tags	Occurrences
<noframes>	1
<frameset>	1
<frame>	1

Printability

Suggestion! Unfortunately, no printer-friendly CSS found.

Meta Tag (viewport tag, mobile devices)

Error! The meta tag named viewport is missing.

Speed test

Server response time

The server response time is fast enough.

Loading time

822 ms

Table layout

Good! No nested tables found.

Number of HTTP resources

Number of source domains

Render blocking resources

The elements below are blocking the “above the fold” rendering.
List of render blocking javascript files

http://www.cleantechnology.nl/.. /js__SlxZR0T0y0knhPGspoKKlEQqbk_RdNNsHwLr...
http://www.cleantechnology.nl/.. /js__H5AFmq1RrXKsrazzPq_xPQPy4K0wUKqecPjc...
http://ajax.googleapis.com/.. /jquery-ui.min.js
http://cdn.jsdelivr.net/bootstrap/3.0.2/js/bootstrap.min.js
http://www.cleantechnology.nl/.. /js__Rfr6Fwuz27V7aGy7ZK2lBJS-6gDnXGQSnRkn...
http://www.cleantechnology.nl/.. /lightbox.js?1528758192
http://www.cleantechnology.nl/.. /js__5S907n5boEXPMXnTVQbkKtNA0i6Anf4fZpl3...
http://www.cleantechnology.nl/.. /js__8EQ29vdlbGndPwk66_bWPZNKHuoKC-HSC4gk...
http://www.cleantechnology.nl/.. /js__u1PeuYhMLpqyhp419FP4JZ8SduXRwYdN7r2C...

List of render blocking css files

http://www.cleantechnology.nl/.. /css__-ZHqLDS9MYyvbjRzoDoF6uG5JlA0JVKVyCr...
http://www.cleantechnology.nl/.. /css__Z4cWHrSgYd8vkrvA1y3GtR105B6Eh9xTUxi...
http://cdn.jsdelivr.net/bootstrap/3.0.2/css/bootstrap.min.css
http://www.cleantechnology.nl/.. /css__eSH9ymGIsxQHNvCQjGQxJB0mPXvKD5_fFCI...
http://fonts.googleapis.com/css?family=Lato:regular,100,300,900&subs...

Speed test – Javascript

Javascript

Good! Just a few javascript files are detected on the website.

File size of all javascript files combined

2.44MB

Javascript minifying

You can save 14.5KB (33% compression) on the analysed URL by minifying the javascript files.

Speed test – CSS

CSS

Good! Just a few CSS files are used on this website.

File size of all css files combined

606.83KB

CSS minifying

Great! The CSS elements are minified.

Speed test – Compression

Uncompressed size of the of the HTML

122.25KB

Gzip compression

Error! By using Gzip you can save 34.2KB (77% compression) on your site.

By compressing http://www.cleantechnology.nl/.. /lightbox.js?1528758192 you can save 34.2KB (77% compression rate)
By compressing http://www.cleantechnology.nl/.. /holthausen-logo.svg you can save 775B (45% compression rate)

Speed test – Browser cache

Number of static resources (image, JS, CSS)

Browser cache

The browser cache is not set correctly for all elements.

URL	Duration
http://static.hotjar.com/c/hotjar-527356.js?sv=5	60 seconds
https://syndication.twitter.com/settings	10 minutes
http://www.googletagmanager.com/gtm.js?id=GTM-MNBR92J	15 minutes
http://platform.twitter.com/widgets.js	30 minutes
http://www.google-analytics.com/analytics.js	2 hours

Speed test – Images

File size of all images combined

4.50MB

Image optimisation

You can save 2MB (67% compression) by optimising the images below:

By lossless compressing the http://www.cleantechnology.nl/.. /clean-energy-bg_0.jpg you can save 1MB (77%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /hesla-background.jpg you can save 336.7KB (83%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /banner-duurzaamste-bedrijf.jpg you can save 323.3KB (81%) data.
By lossless compressing the http://www.cleantechnology.nl/sites/default/files/homepage-bg3.jpg you can save 94.1KB (50%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /HOMEPAGE-BG-GROENGAS.jpg you can save 73.1KB (39%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /HOMEPAGE-BG-INDUSTRIELEGASSEN_0.jpg you can save 44.1KB (22%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /banner-opleidingen.jpg you can save 40.5KB (52%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /controleenonderhoud.jpg you can save 17.4KB (37%) data.
By lossless compressing the http://www.cleantechnology.nl/sites/default/files/gop-bg.jpg you can save 10.2KB (19%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /clean-energy-logo.png you can save 6.2KB (29%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /groninger-ondernemerprijs.png you can save 3.9KB (13%) data.
By lossless compressing the http://www.cleantechnology.nl/.. /hesla-project-logo.png you can save 934B (19%) data.
By lossless compressing the https://pbs.twimg.com/.. /og4ZLjLd_normal.jpg you can save 922B (40%) data.
By lossless compressing the http://www.holthausen.nl/.. /light-timer-glow.png you can save 278B (18%) data.
By lossless compressing the http://www.holthausen.nl/.. /md-arrow.png you can save 110B (38%) data.

Links

We found a total of 0 different links.

Website security

37.97.135.129

External hidden links

Good! No hidden external links found

Looking for eval()

Good! No eval(bas64_decode()) scripts are found

Checking for XSS vulnerability

No XSS vulnerability found

Email encryption

Good! We have not found any unencrypted email addresses.

Sites on same ip

cash-management.nl

timberworks.nl

smart-concepts.nl

roadsports.co.uk

carodesign.nl

total-cleaning.nl

shoesales.nl

callout.nl

schoolwoningen.nl

ligthartschool.nl

Icons

Favicon

Error! No favicon is found. Using favicon helps to build a better brand quicker.

Order of Heading elements on mobile by position

H1 : Holthausen Groep - 'Part of the solution', ( 90px from top )
H2 : Holthausen Groep is koploper op het gebied van veiligheidsoplossingen en energietransitie. , ( 147px from top )
H1 : ZERO EMISSION, ( 386px from top )
H4 : Holthausen Groep / Over Holthausen, ( 730px from top )
H4 : , ( 1155px from top )
H4 : Holthausen Brandbeveiliging / CONTROLE EN ONDERHOUD, ( 1507px from top )

Typos

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SEO report of cleantechnology.nl