Ddg.be - SEO Checker

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Overview of the SEO Check
Meta information
88% 
Page quality
95% 
Page structure
68% 
Link structure
88% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.31 s
File size
146.00 kB
Words
995
Media files
37
Number of links
46 internal / 9 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
DDG | Kachels & haarden op centrale verwarming
The length of the page title is perfect. (445 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Onze kachels en haarden gebruiken hout als brandstof en worden aangesloten op centrale verwarming. Je bespaart op energiekosten en geniet van duurzame warmte.
The meta description is too long: 1030 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.ddg.be/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: nl
Language defined in HTML: nl
Server location: United States of America
The following language is defined by HTML: nl
Alternate/Hreflang Links
(Somewhat important)
The specified alternate links have no errors.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportinitial-scale=1, minimum-scale=1, maximum-scale=5, viewport-fit=cover
apple-mobile-web-app-capableyes
descriptionOnze kachels en haarden gebruiken hout als brandstof en worden aangesloten op centrale verwarming. Je bespaart op energiekosten en geniet van duurzame warmte.
langnl
twitter:cardsummary
twitter:titleDDG | Kachels & haarden op centrale verwarming
twitter:descriptionOnze kachels en haarden gebruiken hout als brandstof en worden aangesloten op centrale verwarming. Je bespaart op energiekosten en geniet van duurzame warmte.
og:typewebsite
og:urlhttps://www.ddg.be/
og:imagehttps://lirp.cdn-website.com/719ee051/dms3rep/multi/opt/social-share-bedrijf-1920w.jpg
og:descriptionOnze kachels en haarden gebruiken hout als brandstof en worden aangesloten op centrale verwarming. Je bespaart op energiekosten en geniet van duurzame warmte.
og:titleDDG | Kachels & haarden op centrale verwarming
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 995 words. That's ok.
36.3% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
18 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 12.22 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "initial-scale=1, minimum-scale=1, maximum-scale=5, viewport-fit=cover" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 20 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
...m/719ee051/dms3rep/multi/logo-no-txt.svglogo ddg heating
...screensite.com/flags/flags_iso/32/nl.pngNederlands
...screensite.com/flags/flags_iso/32/gb.pngEnglish
...screensite.com/flags/flags_iso/32/de.pngDeutsch
...screensite.com/flags/flags_iso/32/fr.pngFrançais
...ms3rep/multi/opt/Hestia-square-1920w.jpggodin van het haardvuur
...opt/DDG-kachels-op-cv-16072025-1920w.pngal onze kachels worden aangesloten op cv
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...9ee051/dms3rep/multi/opt/blank-1920w.pngDDG review
...51/dms3rep/multi/opt/Pio-600px-1920w.pngpio ddg kachel op cv
...s3rep/multi/opt/stempel-expert-1920w.pngstempel cv expert
...ep/multi/opt/stempel-ecodesign-1920w.pngstempel eco design 2022
...p/multi/opt/stempel-everywhere-1920w.pngstempel geschikt voor alle woningen
...screensite.com/flags/flags_iso/32/nl.pngNederlands
...screensite.com/flags/flags_iso/32/gb.pngEnglish
...screensite.com/flags/flags_iso/32/de.pngDeutsch
...screensite.com/flags/flags_iso/32/fr.pngFrançais
...s3rep/multi/opt/Cerga-negatief-1920w.pnglogo cerga
...rep/multi/opt/RESCERT-negatief-1920w.pnglogo rescert
...rep/multi/opt/SGS-wit-negatief-1920w.pnglogo sgs
.../dms3rep/multi/opt/Logo-Agoria-1920w.pnglogo agoria
...e051/dms3rep/multi/opt/fedhbel-1920w.pnglogo febhel
...719ee051/dms3rep/multi/logo-negatief.svglogo ddg kachels op cv

Page structure

H1 heading
(Critically important)
Lage energiekosten met een innovatieve cv-kachel
The H1 heading is perfect.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 30 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 Lage energiekosten met een innovatieve cv-kachel
H3 Johny uit Hemiksem
H3 Guido en Rita uit Sint-Agatha-Berchem
H3 Luc uit Assenede
H3 Kinderboerderij uit Diksmuide
H3 Jos en Lou uit Lommel
H3 Bart uit Hoeselt
H3 Faure uit Wilrijk
H3 Eric uit Wellen
H3 Lea uit Brecht
H3 Eveline uit Essen
H3 DDG = exclusief kachels en haarden op centrale verwarming
H3 Al onze toestellen zijn energielabel A+ en conform Ecodesign 2022
H3 Geschikt voor alle woningtypes en verwarmingsinstallaties
H3 In 1-2-3 naar je allerslimste investering ooit?
H3 Aanvraag afspraak Nederlands
H4 Waarom dat bij jou gensters slaat?
H4 En ook:
H4 Je energiefactuur keldert
H4 Je koppelt aan een hybride systeem
H4 Je verwarmt ecologisch
H4 Je kiest een Belgisch product
H4 Ja, ik wil een afspraak met iemand van DDG, een échte specialist die voor jou door het vuur gaat:
H4 DDG wordt gecertificeerd door:
H4 professioneel gasinstallateur
H4 professioneel installateur thermische zonne-energiesystemen en warmtepompen
H4 controlelabo normen
H4 DDG is lid van:
H4 Agoria CIV | Sirris
H4 Belgische Interprofessionele Federatie van Hout-energie
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 9 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.ddg.be/IMG-ALT logo ddg heating
https://www.ddg.be/HOME
https://www.ddg.be/beursdeelnameBEURZEN
https://www.ddg.be/serviceSERVICE
https://www.ddg.be/over-onsOVER ONS
https://www.ddg.be/vacaturesVACATURE
https://www.ddg.be/contactCONTACT
https://www.ddg.be/Nederlands nl
IMG-ALT Nederlands
https://www.ddg.be/en-gbEnglish en
IMG-ALT English
https://www.ddg.be/deDeutsch de
IMG-ALT Deutsch
https://www.ddg.be/frFrançais fr
IMG-ALT Français
/houtverwarming-op-cvAANGESLOTEN OP CENTRALE VERWARMING?
/kachels-aangesloten-op-centra...KACHELS OP CV
/pio-hydro-kachelPio Hydro
/eco-hydro-kachelEco Hydro
https://www.ddg.be/f-hydro-kachelF Hydro
/inbouwhaarden-aangesloten-op-...INBOUWHAARDEN OP CV
/pio-hydro-inbouwhaardText duplicate Pio Hydro
/eco-hydro-inbouwhaardText duplicate Eco Hydro
/f-hydro-inbouwhaardText duplicate F Hydro
https://www.ddg.be/Text duplicate Nederlands nl
IMG-ALT Nederlands
https://www.ddg.be/en-gbText duplicate English en
IMG-ALT English
https://www.ddg.be/deText duplicate Deutsch de
IMG-ALT Deutsch
https://www.ddg.be/frText duplicate Français fr
IMG-ALT Français
/kachels-aangesloten-op-centra...Text duplicate KACHELS OP CV
/pio-hydro-kachelText duplicate Pio Hydro
/eco-hydro-kachelText duplicate Eco Hydro
https://www.ddg.be/f-hydro-kachelText duplicate F Hydro
/inbouwhaarden-aangesloten-op-...Text duplicate INBOUWHAARDEN OP CV
/pio-hydro-inbouwhaardText duplicate Pio Hydro
/eco-hydro-inbouwhaardText duplicate Eco Hydro
/f-hydro-inbouwhaardText duplicate F Hydro
/info-hout-als-brandstofHout als brandstof
/info-vermogen-berekenenVermogen van een cv-kachel berekenen
/info-hybride-configuratieBespaar op je energiefactuur
/info-zelfbouwersZelfbouw-service installatie cv-kachels
/info-kacheltypesAlles over alle kachels
/ontdek-ons-hydro-gammaOntdek ons Hydro-gamma
/van-terugdraaiende-naar-digit...Van terugdraaiende naar digitale teller
/kwaliteitscontroleKwaliteitscontrole
https://www.ddg.be/schoorsteenSchoorsteen
/haardvuur-aanstekenHaardvuur aansteken
/kachel-onderhouden-of-herstellenKachel onderhouden of herstellen
https://www.ddg.be/ddgboxNIEUW: DDGbox
/f40-preinstalledNIEUW: F40 Preinstalled
http://www.cerga.be/New window External Subdomain IMG-ALT logo cerga
https://rescert.be/New window External IMG-ALT logo rescert
https://www.sgs.be/New window External Subdomain IMG-ALT logo sgs
https://www.agoria.be/New window External Subdomain IMG-ALT logo agoria
https://www.febhel.be/nlNew window External Subdomain IMG-ALT logo febhel
/privacyverklaringPRIVACYVERKLARING
https://facebook.com/ddgheating/New window External No Text
https://www.instagram.com/ddgh...New window External Subdomain No Text
https://www.youtube.com/playli...New window External Subdomain No Text
https://www.linkedin.com/compa...New window External Subdomain No Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.ddg.be/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.31 seconds.
The file size of the HTML document is fine (146 kB).

HTTP Response Header

NameValue
servernginx
dateWed, 11 Feb 2026 22:34:29 GMT
content-typetext/html;charset=utf-8
content-length33661
etag"-1931369300"
d-cachefrom-cache
content-encodinggzip
strict-transport-securitymax-age=31536000; preload
x-frame-optionsSAMEORIGIN
content-security-policyframe-ancestors 'self'
x-content-type-optionsnosniff
varyuser-agent,accept-encoding
cache-controlno-cache, must-revalidate
expiresThu, 01 Jan 1970 00:00:00 GMT
speculation-rules"https://static.cdn-website.com/speculations/rules/prerender-1.0.3.json"
d-geoEU
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 142 referring domains.
This page has 228 backlinks.
This page has backlinks from 44 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

# Sitemap is also available on /sitemap.xml
Sitemap: https://www.ddg.be/sitemap.xml
User-agent: *

Similar sites

Search preview

www.ddg.be
DDG | Kachels & haarden op centrale verwarming
Onze kachels en haarden gebruiken hout als brandstof en worden aangesloten op centrale verwarming. Je bespaart op energiekosten en geniet van duurzame warmte.

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
en haarden78%Check
kachels en haarden75%Check
DDG74%Check
KACHELS70%Check
Kachels Haarden68%Check
OP CENTRALE68%Check
Kachels haarden op centrale68%Check
OP CENTRALE VERWARMING67%Check
haarden op centrale verwarming67%Check
CENTRALE66%Check
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