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Report generated 10 days ago
https://delschule.com/de
Your general SEO Checkup Score
Archived
77/100
SEO Score
Congratulations! Your website has received a SEO score of 77 out of 100, which is higher than the average score of 73. Our analysis has identified 14 important issues that can be addressed to further enhance your website's performance and improve its search engine visibility.
14 Failed
4 Warnings
54 Passed
Issues to fix
HIGH
To address URL canonicalization issues, it is recommended to select a primary URL for your webpage and set up redirects from all other variations to the preferred one.
HIGH
Connect your webpage with social media networks using APIs or AddThis, as social signals are becoming increasingly important for search engines to validate a site's trustworthiness and authority.
HIGH
To improve the website experience for your visitors, it is recommended to eliminate any render-blocking resources on this webpage.
HIGH
Using images in a modern format can significantly reduce the file size and improve the loading speed of a webpage, providing a better user experience and potentially increasing engagement.
MEDIUM
To enhance website performance, it is recommended to implement a caching mechanism that delivers static HTML content.
MEDIUM
Add a Google Analytics script to this website to help in diagnosing potential SEO issues by monitoring site visitors and traffic sources.
MEDIUM
Reducing the Document Object Model (DOM) size can lead to faster page loading times, improved site performance, and better user experience by decreasing the amount of time it takes for the browser to process and render the page.
MEDIUM
Avoid performance and security issues by adding "rel=noopener" or "rel=noreferrer" to your "target=_blank" links.
LOW
Without an SPF record, spammers can easily spoof emails from this domain, potentially leading to compromised email security and deliverability issues.
LOW
To protect against spam harvesters, consider hiding or obfuscating email addresses in your page code.
LOW
Using more than 20 HTTP requests on a webpage can negatively impact the loading time.
LOW
Consider moving inline CSS styles to an external stylesheet to improve site performance and maintain separation of content and design.
LOW
Consider adding the Strict-Transport-Security header to your webpage to ensure that web traffic is encrypted over HTTPS, mitigating the risk of man-in-the-middle attacks and other security threats.
LOW
Replace deprecated HTML tags with their modern equivalents or appropriate CSS rules.
Common SEO issues
Score: 77
Failed: 4
Warnings: 2
Passed: 20
Meta Title Test100% of top 100 sites passed
  • This webpage is using a title tag.
Text: Lernen Sie Sprachen | Del Schule
Length: 32 characters
Meta Description Test97% of top 100 sites passed
  • This webpage is using a meta description tag.
Text: Del Schule ist ein Sprachlernzentrum, das auf experimentellem Lernen basiert und Kurse in Deutsch, Englisch und Spanisch anbietet. Kooperationszentrum des Goethe-Instituts und des Oxford Certification Center.
Length: 208 characters
Google Search Results Preview Test
Desktop version
https://delschule.com/deLernen Sie Sprachen | Del SchuleDel Schule ist ein Sprachlernzentrum, das auf experimentellem Lernen basiert und Kurse in Deutsch, Englisch und Spanisch anbietet. Kooperationszentrum des Goethe-Instituts und des Oxford Certification Center.
Mobile version
https://delschule.com/deLernen Sie Sprachen | Del SchuleDel Schule ist ein Sprachlernzentrum, das auf experimentellem Lernen basiert und Kurse in Deutsch, Englisch und Spanisch anbietet. Kooperationszentrum des Goethe-Instituts und des Oxford Certification Center.
Social Media Meta Tags Test83% of top 100 sites passed
  • This webpage is using social media meta tags.
Open Graph Meta Tags
og:type
website
og:title
Lernen Sie Sprachen | Del Schule
og:site_name
Del Schule
og:url
https://www.delschule.com/de/
og:image
https://www.delschule.com/web/image/website/1/social_default_image?unique=f07c669
og:description
Del Schule ist ein Sprachlernzentrum, das auf experimentellem Lernen basiert und Kurse in Deutsch, Englisch und Spanisch anbietet. Kooperationszentrum des Goethe-Instituts und des Oxford Certification Center.
Most Common Keywords Test
  • There is likely no optimal keyword density (search engine algorithms have evolved beyond keyword density metrics as a significant ranking factor). It can be useful, however, to note which keywords appear most often on your page and if they reflect the intended topic of your page. More importantly, the keywords on your page should appear within natural sounding and grammatically correct copy.
13schule9tenerife8eine7santa7cruz
Keywords Usage Test81% of top 100 sites passed
  • The most common keywords of this webpage are distributed well across the important HTML tags. This helps search engines to properly identify the topic of this webpage.
Keyword
Title tag
Meta description
Headings
schule
tenerife
eine
santa
cruz
Keywords Cloud Test
aktivitätenalgorithmicsanterioraufmerksamkeitayudaañazabedürfnissebefindetbetreuerbewertungenblogcaladoscallecampscruzdassdeinedesarrollodeutschdeutschkursedigitaleigenständigeineeinkaufskorbenglischenglischkurseentdeckungerfolgreicheuropeofondofächernförderungförderunterrichthallohausaufgabenhausaufgabenbetreuunghelfenheuteihreimmerjahrenjedenjedesjuliokindkinderkompetenzkontaktkursangebotekönnenleistungenlernenlernmethodenlocalmeinmeinemorgennachhilfeunterrichtnotenobjetivooderparaprogrammierenrblaregionalrobotikrobóticasantaschonschuleschülerschülerinnenschülernschülerssehrseinsichsiguientesindsozialenspanischspaßsprachestartseitesíganostareateamtenerifetochterunsereunterrichtverbessernverschiedenenwerdenwollenwährendzentrumzertifikatzukunftüber
Competitor Domains Test
Understand your competitors' SEO profile

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Heading Tags Test70% of top 100 sites passed
  • This webpage contains too many H2 tags! H2 tags should re-inforce the related content of your page to search engines - too many tags may make the topic less clear, or look like spam tactics. Consider using less than 10 H2 tags.
H1 tags
DEL SCHULE
Bildung ist eine Herzensangelegenheit
Was unsere Kunden über uns berichten
H2 tags
DEUTSCHKURSE
ROBOTIK
CAMPS
ENGLISCHKURSE
NACHHILFEUNTERRICHT
HAUSAUFGABENBETREUUNG
AYUDA A LA TAREA
ROBÓTICA EDUCATIVA
Deine beste Wahl
PROGRAMMIERKURSE UND ENTWICKLUNG VON DIGITALEN PROJEKTEN
Über uns
Bewertungen
Robots.txt Test94% of top 100 sites passed
  • Congratulations! Your site uses a "robots.txt" file.
Sitemap Test75% of top 100 sites passed
  • This website has a sitemap file.
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SEO Friendly URL Test40% of top 100 sites passed
  • All links from this webpage are SEO friendly.
Image Alt Test71% of top 100 sites passed
  • This webpage is using "img" tags with empty or missing "alt" attribute!
See full list
Responsive Image Test38% of top 100 sites passed
  • All images in this webpage are properly sized for different users' viewports.
Image Aspect Ratio Test72% of top 100 sites passed
  • All image display dimensions match the natural aspect ratio.
Inline CSS Test2% of top 100 sites passed
  • This webpage is using inline CSS styles!
See results list
Deprecated HTML Tags Test99% of top 100 sites passed
  • We found some HTML deprecated tags! You are advised to change these old tags with equivalent tags or proper CSS rules.
42font
Google Analytics Test69% of top 100 sites passed
  • A Google Analytics script is not detected on this page. While there are several tools available to monitor your site's visitors and traffic sources, Google Analytics is a free, commonly recommended program to help diagnose potential SEO issues.
Favicon Test100% of top 100 sites passed
  • favicon
    This website appears to have a favicon.
JS Error Test74% of top 100 sites passed
  • There are no severe JavaScript errors on this webpage.
Console Errors Test33% of top 100 sites passed
  • This webpage doesn't have any warnings or errors caught by the Chrome DevTools Console.
Charset Declaration Test100% of top 100 sites passed
  • This webpage has a character encoding declaration.
Content-Type: text/html; charset=utf-8; charset=utf-8
Social Media Test80% of top 100 sites passed
  • This webpage is not connected with social media using the API's provided by Facebook, Google +, Twitter, Pinterest, or using addthis.com
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Speed optimizations
Score: 76
Failed: 5
Warnings: 1
Passed: 17
HTML Page Size Test34% of top 100 sites passed
  • The size of this webpage's HTML is 24.69 Kb and is under the average webpage's HTML size of 33 Kb. Faster loading websites result in a better user experience, higher conversion rates, and generally better search engine rankings.
DOM Size Test17% of top 100 sites passed
  • The Document Object Model (DOM) of this webpage has 2,889 nodes which is greater than the recommended value of 1,500 nodes! A large DOM size negatively affects site performance and increases the page load time.
HTML Compression/GZIP Test96% of top 100 sites passed
  • This webpage is successfully compressed using br compression on your code. The HTML code is compressed from 151.07 Kb to 24.69 Kb (84% size savings). This helps ensure a faster loading webpage and improved user experience.
Site Loading Speed Test68% of top 100 sites passed
  • The loading time of this webpage (measured from N. Virginia, US) is around 3.64 seconds and this is under the average loading speed which is 5 seconds.
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JS Execution Time Test79% of top 100 sites passed
  • The JavaScript code used by this webpage is executed in less than 2 seconds.
Page Objects Test
  • This webpage is using more than 20 http requests, which can slow down page loading and negatively impact user experience!
Content size by content type
Content type
Percent
Size
image
54.8 %
1.22 Mb
javascript
33.4 %
760.54 Kb
font
5.7 %
130.52 Kb
css
3.9 %
88.12 Kb
other
1.1 %
25.83 Kb
html
1.1 %
24.35 Kb
TOTAL
100%
2.22 Mb
Requests by content type
Content type
Percent
Requests
image
46.6 %
27
javascript
20.7 %
12
css
8.6 %
5
font
8.6 %
5
other
8.6 %
5
html
6.9 %
4
TOTAL
100%
58
Content size by domain
Domain
Percent
Size
delschule.com
82.7 %
1.84 Mb
maps.googleapis.com
7.8 %
178.68 Kb
unpkg.com
4.1 %
93.33 Kb
maps.gstatic.com
2.6 %
60.36 Kb
fonts.gstatic.com
2.4 %
54.87 Kb
google.com
0.2 %
4.91 Kb
fonts.googleapis.com
0.1 %
1.78 Kb
maps.google.com
0.0 %
261 B
TOTAL
100%
2.22 Mb
Requests by domain
Domain
Percent
Requests
delschule.com
67.2 %
39
maps.googleapis.com
12.1 %
7
fonts.gstatic.com
6.9 %
4
google.com
5.2 %
3
fonts.googleapis.com
3.4 %
2
unpkg.com
1.7 %
1
maps.gstatic.com
1.7 %
1
maps.google.com
1.7 %
1
TOTAL
100%
58
Page Cache Test (Server Side Caching)100% of top 100 sites passed
  • It doesn't appear that this website is caching webpages. Cached pages serve up static html and avoid potentially time consuming queries to your database. It also helps lower server load by up to 80%. Caching most visibly benefits high traffic pages that access a database, but whose content does not change on every page view. Common caching methods include Alternative PHP Cache, Quickcache, and WP Super Cache (for Wordpress sites). Caching mechanisms also typically compress HTML, further reducing page size and load time.
Flash Test100% of top 100 sites passed
  • This webpage does not include flash objects (an outdated technology that was sometimes used to deliver rich multimedia content). Flash content does not work well on mobile devices, and is difficult for crawlers to interpret.
CDN Usage Test96% of top 100 sites passed
  • This webpage is not serving all resources (images, javascript and css) from CDNs!
See results list
Modern Image Format Test32% of top 100 sites passed
  • This webpage is not serving images in a modern format! Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
See results list
Image Metadata Test
  • This webpage is not using images with large metadata.
Image Caching Test99% of top 100 sites passed
  • This website is using cache headers for images and the browsers will display these images from the cache.
JavaScript Caching Test98% of top 100 sites passed
  • This webpage is using cache headers for all JavaScript resources.
CSS Caching Test98% of top 100 sites passed
  • This webpage is using cache headers for all CSS resources.
JavaScript Minification Test93% of top 100 sites passed
  • All JavaScript files used by this webpage are minified.
See results list
CSS Minification Test97% of top 100 sites passed
  • All CSS resources used by this webpage are minified.
See results list
Render Blocking Resources Test29% of top 100 sites passed
  • This webpage is using render blocking resources! Eliminating render-blocking resources can help this webpage to load significantly faster and will improve the website experience for your visitors.
See results list
Nested Tables Test99% of top 100 sites passed
  • This webpage is not using nested tables. This speeds up page loading time and optimizes the user experience.
Frameset Test100% of top 100 sites passed
  • This webpage does not use frames.
Doctype Test100% of top 100 sites passed
  • This webpage has a doctype declaration.
<!DOCTYPE html>
URL Redirects Test96% of top 100 sites passed
  • This URL doesn't have any redirects (which could potentially cause site indexation issues and site loading delays).
Largest Contentful Paint Test
  • The Largest Contentful Paint duration of this webpage is 1.34 seconds. To provide a good user experience, sites should strive to have Largest Contentful Paint of 2.5 seconds or less.
Largest Contentful Paint element within the viewport:
Text: DEUTSCHKURSE
Html: <div class="text-center o_colored_level undefined o_cc o_cc5 s..." data-name="Block" style="background-position: 71.0047% 0%; background-image..." data-scroll-background-ratio="0" data-original-id="4106" data-original-src="/web/image/4106-b4f19778/aleman.jpg" data-mimetype="image/jpeg" data-resize-width="1500">
Cumulative Layout Shift Test
  • The CLS score of this webpage is 0.066. To provide a good user experience, sites should strive to have a CLS score of 0.1 or less.
DOM element which contributes the most to CLS score:
Html: <div class="container">
Score: 0.0533
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Server and security
Score: 69
Failed: 4
Warnings: 0
Passed: 6
URL Canonicalization Test92% of top 100 sites passed
SSL Checker and HTTPS Test100% of top 100 sites passed
  • This website is successfully using HTTPS, a secure communication protocol over the Internet.

The certificate is not used before the activation date.

The certificate has not expired.

The hostname "delschule.com" is correctly listed in the certificate.

The certificate should be trusted by all major web browsers.

The certificate was not revoked.

The certificate was signed with a secure hash.

Certificate Chain:
Server certificate
Common name
delschule.com
Subject Alternative Names (SANs)
delschule.com, delschule.es, www.delschule.com, www.delschule.es
Not valid before
Fri, April 28o 2023, 6:43:03 am (z)
Not valid after
Thu, July 27o 2023, 6:43:02 am (z)
Signature algorithm
sha256WithRsaEncryption
Issuer
R3
Intermediate certificate
Common name
R3
Organization
Let's Encrypt
Location
US
Not valid before
Fri, September 4o 2020, 12:00:00 am (z)
Not valid after
Mon, September 15o 2025, 4:00:00 pm (z)
Signature algorithm
sha256WithRsaEncryption
Issuer
ISRG Root X1
Root certificate
Common name
ISRG Root X1
Organization
Internet Security Research Group
Location
US
Not valid before
Thu, June 4o 2015, 11:04:38 am (z)
Not valid after
Mon, June 4o 2035, 11:04:38 am (z)
Signature algorithm
sha256WithRsaEncryption
Issuer
ISRG Root X1
Mixed Content Test (HTTP over HTTPS)100% of top 100 sites passed
  • This webpage does not use mixed content - both the initial HTML and all other resources are loaded over HTTPS.
HTTP2 Test92% of top 100 sites passed
  • This webpage is using the HTTP/2 protocol.
HSTS Test
  • This webpage is not using the Strict-Transport-Security header! This is a security header that was created as a way to force the browser to use secure connections when a site is running over HTTPS.
Safe Browsing Test100% of top 100 sites passed
  • This website is not currently listed as suspicious (no malware or phishing activity found).
Server Signature Test88% of top 100 sites passed
  • The server signature is off for this webpage.
Directory Browsing Test100% of top 100 sites passed
  • Directory browsing is disabled for this website.
Plaintext Emails Test93% of top 100 sites passed
  • We've found 1 email addresses in your page code! We advise you to protect email links in a way that hides them from the spam harvesters.
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Mobile usability
Score: 100
Failed: 0
Warnings: 0
Passed: 3
Meta Viewport Test94% of top 100 sites passed
  • This webpage is using a viewport meta tag.
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" />
Media Query Responsive Test99% of top 100 sites passed
  • This webpage is using CSS media queries, which is the base for responsive design functionalities.
Mobile Snapshot Test
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Advanced SEO
Score: 90
Failed: 1
Warnings: 1
Passed: 8
Structured Data Test59% of top 100 sites passed
  • This webpage is using structured data.
See results list
Custom 404 Error Page Test75% of top 100 sites passed
  • This website is using a custom 404 error page. We recommend to have a custom 404 error page in order to improve the website's user experience by letting users know that only a specific page is missing/broken (and not the entire site), providing them helpful links, the opportunity to report bugs, and potentially track the source of broken links.
Noindex Tag Test99% of top 100 sites passed
  • This webpage does not use the noindex meta tag. This means that it can be indexed by search engines.
Canonical Tag Test95% of top 100 sites passed
  • This webpage is using the canonical link tag. This tag specifies that the URL: https://delschule.com/de is preferred to be used in search results. Please ensure that this specification is correct, as canonical tags are often hard-coded and may not always reflect the latest changes in a site's URL structure.
<link href="https://delschule.com/de" rel="canonical"/>
Nofollow Tag Test
  • This webpage does not use the nofollow meta tag. This means that search engines will crawl all links from this webpage.
Disallow Directive Test
  • The robots.txt file does not use the disallow directive. This means that the whole website can be crawled by search engines.
Meta Refresh Test95% of top 100 sites passed
  • This webpage is not using a meta refresh tag.
SPF Records Test94% of top 100 sites passed
  • This DNS server is not using an SPF record! SPF (Sender Policy Framework) allows administrators to specify which hosts are allowed to send mail from a given domain by creating a specific SPF record or TXT record in the Domain Name System (DNS). You can find more information about SPF records here.
Ads.txt Validation Test80% of top 100 sites passed
  • This website doesn't use an ads.txt file! Ads.txt is a text file that contains a list of Authorized Digital Sellers. The purpose of ads.txt files is to give advertisers and advertising networks the ability to verify who is allowed to sell advertising on your website.
Spell Check Test
Check your webpage for misspellings!

Finding and fixing misspellings on your webpage will help both user experience and search engine rankings.

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