Oper.koeln - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
86% 
Page structure
58% 
Link structure
82% 
Server
75% 
External factors
100% 
SEO Score
Response time
0.93 s
File size
372.40 kB
Words
628
Media files
24
Number of links
56 internal / 9 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Oper Köln | Oper Köln
The page title is too short. (199 pixels of 580 max pixel length) Optimize title
There are word repetitions in the page title.
Meta description
(Critically important)
The meta description is empty.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.oper.koeln/en
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
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
viewportwidth=device-width, initial-scale=1.0, maximum-scale=5.0
descriptionEmpty
mobile-web-app-capableyes
apple-mobile-web-app-titlePageeditor
authorPageeditor
og:typewebsite
og:site_namePageeditor
og:image:width512
og:image:height512
og:image:typeimage/png
langen
og:typewebsite
og:site_namePageeditor
og:image:width512
og:image:height512
og:image:typeimage/png
og:localeen
og:locale:alternatede
og:descriptionEntdecken Sie erstklassige Opern- und Musikproduktionen
og:titleOper Köln
og:imagehttps://www.oper.koeln/media/filer_public_thumbnails/filer_public/23/e4/23e41bd9-eac6-427e-81ad-b1e95ce86d6f/frau_ohne_schatten_0072_matthias_jung.jpg__1920x1920_q85_subsampling-2_upscale.jpg
charsetutf-8

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Page quality

Content
(Critically important)
There are 2 text duplicates on this page:
  • Duplicate: Wir informieren in unserem Newsletter monatlich über anstehende Premie...
This page contains 628 words. That's ok.
31.2% of the text are stop words.
The page contains a listing, which indicates a good text layout.
7 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
The average number of words per sentence of 16.86 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1.0, maximum-scale=5.0" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 13 tags for this page.
Image SEO
(Somewhat important)
10 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
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
...cation-797,823_subsampling-2_upscale.jpgNo alt attribute provided
...cation-450,600_subsampling-2_upscale.jpgVorschaubild NABUCCO
...2x433_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
...cation-450,600_subsampling-2_upscale.jpgVorschaubild DON GIOVANNI
...2x433_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
...ation-1143,952_subsampling-2_upscale.jpgNo alt attribute provided
...cation-450,600_subsampling-2_upscale.jpgVorschaubild EINE FRAU VON FORMAT
...2x433_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
...cation-450,600_subsampling-2_upscale.jpgVorschaubild LA PASSION DE SIMONE
...2x433_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
...cation-450,600_subsampling-2_upscale.jpgVorschaubild DIE LETZTEN TAGE DER MENSCHHEIT
...2x433_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
...2x433_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
...2x433_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
...0x360_q85_crop_subsampling-2_upscale.jpgJohn Heuzenroeder sings the song ‘Green Little Isle of the Sea’ by his ancestor Moritz Heuzenroeder
...0x360_q85_crop_subsampling-2_upscale.jpgOn 25 October, we celebrate WORLD OPERA DAY 2024 under the motto ‘Benvenuti All'Opera’ - Celebrate with us!
...0x360_q85_crop_subsampling-2_upscale.jpgOpera can be gigantic, colossal and monumental. But it can also be very small and intimate. In the third edition of our video magazine RESONATE, presenter Bianca Hauda and dramaturge Svenja Gottsmann go in search of the many different ways opera can be told.
...ation-1243,539_subsampling-2_upscale.jpgA little preview of the third episode of RESONATE? Presenter Bianca Hauda meets director Melly Still in the beautiful Rheinpark. Together they talk about Haydn's DIE SCHÖPFUNG and the contemporary role of the oratorio.
...tion-1987,1210_subsampling-2_upscale.jpgOpera is fashion and fashion is craft - not only on stage, but especially backstage. In our new edition of the RESONATE video magazine, we drop the masks and take a look behind the scenes of our new production of Giuseppe Verdi's ‘A Masked Ball’ with ARTE presenter Bianca Hauda.
...0x360_q85_crop_subsampling-2_upscale.jpg3x grand opera at a low price
...0x360_q85_crop_subsampling-2_upscale.jpgIn cooperation with Excelsior Hotel Ernst
...0x360_q85_crop_subsampling-2_upscale.jpgTheWunschbaum will be back again this year. More information soon here!
...0x360_q85_crop_subsampling-2_upscale.jpgNo alt attribute provided
Video URLWidthHeight
.../Kurz_Reel_NL_Homepage_Kopie.b93c983.mp4

Page structure

H1 heading
(Critically important)
Or lan do
The H1 heading is too short (9 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.
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 Or lan do
H2 Upcoming events
H2 Productions
H2 ABONNEMENTS DER OPER KÖLN
H3 Die Bremer Stadtmusikanten
H3 Orlando
H3 Theaterworkshop Nabucco
H3 Die Bremer Stadtmusikanten Duplicate text
H3 Orlando Duplicate text
H3 Die Bremer Stadtmusikanten Duplicate text
H3 Orlando Duplicate text
H3 Die Bremer Stadtmusikanten Duplicate text
H3 Soiree mit öffentlicher Probe
H3 Orlando Duplicate text
H3 Nabucco
H3 Don Giovanni
H3 Lucia di Lammermoor
H3 Eine Frau von Format
H3 La Passion de Simone
H3 Die letzten Tage der Menschheit
H3 Superheldennormalos
H3 De Kölsche Fledermaus
H4 Aus der Heimat: John Heuzenroeder
H4 World Opera Day 2024
H4 RESONATE (III)
H4 Sneak Peak RESONATE
H4 RESONATE (II)
H4 The perfect gift!
H4 New Year's Eve Special
H4 Wunschbaum 2024
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
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.oper.koeln/enAnchor Zum Inhalt springen
A-TITLE Zum Inhalt springen
https://www.oper.koeln/enNo Text
/en/programmeWhat's on
/en/ensembleEnsemble
/en/kinderoperKinderoper
https://www.oper.koeln/en/serviceService
https://www.oper.koeln/deDeutsch
A-TITLE Change language to "Deutsch"
https://www.oper.koeln/enEnglish
A-TITLE Change language to "English"
/en/programmeText duplicate What's on
/en/ensembleText duplicate Ensemble
/en/kinderoperText duplicate Kinderoper
https://www.oper.koeln/en/serviceText duplicate Service
/en/oper-stadt-schuleLearning
/en/subscriptionsSubscriptions
https://www.oper.koeln/en/blogMagazine
/en/about-usAbout us
https://www.oper.koeln/en/supportJoin & Support
https://www.oper.koeln/dede
https://www.oper.koeln/enen
/en/productions/orlando/1030Premiere 17 November
/en/productions/die-bremer-sta...Die Bremer Stadtmusikanten
/en/productions/orlando/1030Orlando
https://shop.oper.koeln/websho...External Subdomain Buy ticket
/en/productions/theaterworksho...Theaterworkshop Nabucco
/en/productions/die-bremer-sta...Text duplicate Die Bremer Stadtmusikanten
https://shop.oper.koeln/websho...External Subdomain Text duplicate Buy ticket
/en/productions/orlando/1030Text duplicate Orlando
https://shop.oper.koeln/websho...External Subdomain Text duplicate Buy ticket
/en/productions/die-bremer-sta...Text duplicate Die Bremer Stadtmusikanten
/en/productions/orlando/1030Text duplicate Orlando
https://shop.oper.koeln/websho...External Subdomain Text duplicate Buy ticket
/en/productions/die-bremer-sta...Text duplicate Die Bremer Stadtmusikanten
/en/productions/soiree-mit-off...Soiree mit öffentlicher Probe
/en/productions/orlando/1030Text duplicate Orlando
https://shop.oper.koeln/websho...External Subdomain Text duplicate Buy ticket
/en/productions/nabucco/1025Premiere on 01.12.2024 at 6.00 PM Nabucco Giuseppe Verdi
IMG-ALT Vorschaubild NABUCCO
/en/productions/don-giovanni/1000Premiere on 09.03.2025 at 6.00 PM Don Giovanni Wolfgang Amadeus Mozart
IMG-ALT Vorschaubild DON GIOVANNI
/en/productions/lucia-di-lamme...Resumption on 26.04.2025 at 7.30 PM Lucia di Lammermoor Gaetano Donizetti
/en/productions/eine-frau-von-...Premiere on 11.05.2025 at 6.00 PM Eine Frau von Format Michael Krasznay-Krausz
IMG-ALT Vorschaubild EINE FRAU VON FORMAT
/en/productions/la-passion-de-...Premiere on 18.05.2025 at 6.00 PM La Passion de Simone Kaija Saariaho
IMG-ALT Vorschaubild LA PASSION DE SIMONE
/en/productions/die-letzten-ta...World premiere on 27.06.2025 at 6.00 PM Die letzten Tage der Menschheit Philippe Manoury
IMG-ALT Vorschaubild DIE LETZTEN TAGE DER MENSCHHEIT
/en/productions/superheldennor...World premiere on 25.04.2025 at 6.00 PM Superheldennormalos Community Opera
/en/productions/de-kolsche-fle...Premiere on 01.02.2025 at 6.00 PM De Kölsche Fledermaus Bühnenspielgemeinschaft Cäcilia Wolkenburg im Kölner Männer-Gesang-Verein
/en/blog/aus-der-heimat-john-h...Aus der Heimat: John Heuzenroeder John Heuzenroeder sings the song ‘Green Little Isle of the Sea’ by his ancestor Moritz Heuzenroeder Read more
IMG-ALT John Heuzenroeder sings the song ‘Green Little Isle of the Sea’ by his ancestor Moritz Heuzenroeder
/en/blog/world-opera-day-2024/22World Opera Day 2024 On 25 October, we celebrate WORLD OPERA DAY 2024 under the motto ‘Benvenuti All'Opera’ - Celebrate with us! Read more
IMG-ALT On 25 October, we celebrate WORLD OPERA DAY 2024 under the motto ‘Benvenuti All'Opera’ - Celebrate with us!
/en/blog/resonate-iii/21RESONATE (III) Opera can be gigantic, colossal and monumental. But it can also be very small and intimate. In the third edition of our video magazine RESONAT...
IMG-ALT Opera can be gigantic, colossal and monumental. But it can also be very small and intimate. In the third edition of our video magazine RESONATE, presenter Bi...
/en/blog/sneak-peak-resonate/19Sneak Peak RESONATE A little preview of the third episode of RESONATE? Presenter Bianca Hauda meets director Melly Still in the beautiful Rheinpark. Together...
IMG-ALT A little preview of the third episode of RESONATE? Presenter Bianca Hauda meets director Melly Still in the beautiful Rheinpark. Together they talk about Hay...
/en/blog/resonate-ii/3RESONATE (II) Opera is fashion and fashion is craft - not only on stage, but especially backstage. In our new edition of the RESONATE video magazine, we drop...
IMG-ALT Opera is fashion and fashion is craft - not only on stage, but especially backstage. In our new edition of the RESONATE video magazine, we drop the masks and...
/en/festive-offersThe perfect gift! 3x grand opera at a low price Mehr Informationen
IMG-ALT 3x grand opera at a low price
/en/festive-offersNew Year's Eve Special In cooperation with Excelsior Hotel Ernst Mehr Informationen
IMG-ALT In cooperation with Excelsior Hotel Ernst
/en/wunschbaumWunschbaum 2024 TheWunschbaum will be back again this year. More information soon here! Mehr Informationen
IMG-ALT TheWunschbaum will be back again this year. More information soon here!
https://buehnen.koeln/datensch...New window External Datenschutzerklärung
/en/subscriptionsMehr Informationen
https://www.oper.koeln/enNo Text
https://buehnen.koeln/datensch...New window External Text duplicate Datenschutzerklärung
https://www.oper.koeln/en/teamTeam
https://www.oper.koeln/en/careerCareer
https://www.oper.koeln/en/pressPress & Communications
/en/terms-and-conditionsTerms & Conditions
https://www.oper.koeln/en/imprintImprint
/en/privacy-noticePrivacy Notice
/en/rent-orchesterproberaumRent
/en/contactsContact
https://www.instagram.com/dieo...New window Nofollow External Subdomain Instagram
https://www.facebook.com/OperK...New window Nofollow External Subdomain Facebook

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.oper.koeln/en"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time of 0.93 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
The file size of the HTML document is fine (372 kB).

HTTP Response Header

NameValue
servernginx
dateSat, 16 Nov 2024 04:32:03 GMT
content-typetext/html; charset=utf-8
cache-controlmax-age=600
expiresSat, 16 Nov 2024 04:42:03 GMT
etag"5d1c9-fT4bdK4/UY85ynclPQgoEd18xwk"
accept-rangesnone
varyAccept-Encoding
content-encodinggzip
strict-transport-securitymax-age=63072000; includeSubdomains; preload
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 39 referring domains.
This page has 1,362 backlinks.
This page has backlinks from 37 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow: /de/programm?date=*
Disallow: /en/programme?date=*

User-agent: Amazonbot
Disallow: /

Similar sites

Search preview

www.oper.koeln
Oper Köln | Oper Köln

Most important keywords

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

KeywordResultRecheck
Oper64%Check
Oper Köln62%Check
Köln56%Check
lan56%Check
Nabucco46%Check
RESONATE44%Check
Orlando44%Check
Bremer43%Check
Stadtmusikanten43%Check
World Opera Day 202443%Check
Show more keywords and terms

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