Nibbler SEO audit for www.esa.int
Summary
Overall7.7
The overall score for this website.
Accessibility8.3
How accessible the website is to mobile and disabled users.
The following tests contribute to this score:
Experience8.9
How satisfying the website is likely to be for users.
The following tests contribute to this score:
Marketing7.8
How well marketed, and popular the website is.
The following tests contribute to this score:
Technology8.4
How well designed and built the website is.
The following tests contribute to this score:
Nibbler tested a sample of 5 pages from this website at 05:44 on 21 Nov 2023 (GMT).
Top priorities for website improvement
- Consider a leading website analytics solution, such as WebTrends or Google Analytics. (read more)
- Consider shortening long anchor text. (read more)
- Consider URL rewriting as an effective and transparent means of creating appropriate URLs. URLs using unusual characters (such as semi-colons or underscores), long numerals or complex phrasing are very difficult for real people to use or exchange. They also tend to be less favoured by search engines. Wherever possible ensure web addresses are 'human readable' - i.e. they should be easy to read, remember and type. In particular, avoid the use of obscure characters (including the underscore, which is not widely understood by non-technical users, or particularly memorable) and long numerals, e.g. example.com/23857984325. (read more)
Analytics0.0
0% of pages use analytics
No Analytics Solution
- None of this website is using any recognised analytics software. It is still possible to gather a great deal of information from webserver logs, however complete visitor analysis requires client-side Javascript or an image not found here.
- Consider a leading website analytics solution, such as WebTrends or Google Analytics.
- Note that this test can only detect recognised analytics solutions. If an analytics solution is new, obscure or used in a non-standard way (e.g. it has been customised) it may not be detected.
Internal links4.9
- One link uses text that is too long. Links should describe what they link to briefly. Linking a long block of text usually indicates an attempt to trick search engines into ranking those keywords highly (a strategy which does not work). Long linked blocks of text are also harder for people to scan.
- Consider shortening long anchor text.
Overly long link text
Link URL Link text Page URL www.esa.int/.../Italy_s_Mount_Etna_spews_lava One of the world’s most active volcanoes, Mount Etna, erupted on Sunday – spewing lava and clouds of ash high over the Mediterranean island of Sicily. This image, captured on 13 November by the Copernicus Sentinel-2 mission, has been processed using the mission’s shortwave-infrared bands to show the lava flow at the time of acquisition. www.esa.int/.../Week_in_images_13-17_November_2023
- Consider shortening long anchor text.
- 23 links have no text describing their destination. Links on a page should describe their destination for the benefit of both screen readers and search engine spiders.
- Add meaningful anchor text that describes the link's destination. If the link contains an image, ensure you have provided alt text.
Empty link text
- Add meaningful anchor text that describes the link's destination. If the link contains an image, ensure you have provided alt text.
URL format5.2
4 URLs are less than ideal
- 4 URLs are particularly hard to type or remember.
- Consider URL rewriting as an effective and transparent means of creating appropriate URLs. URLs using unusual characters (such as semi-colons or underscores), long numerals or complex phrasing are very difficult for real people to use or exchange. They also tend to be less favoured by search engines. Wherever possible ensure web addresses are 'human readable' - i.e. they should be easy to read, remember and type. In particular, avoid the use of obscure characters (including the underscore, which is not widely understood by non-technical users, or particularly memorable) and long numerals, e.g. example.com/23857984325.
Meta tags6.8
This is how this website will look in Google search listings:
European Space Agency
www.esa.int/
The European Space Agency portal features the latest news in space exploration, human spaceflight, launchers, telecommunications, navigation, monitoring and space ...
- All pages include at least some metadata, but only 60.0% of pages have a description meta tag. The description meta data is important as it appears on Google's search result pages.
- Make sure that all the pages of this website include a meta description. If you don't include one, Google will choose a sample of text from the page to appear in the search engine result. By including a meta description, you can control how your search engine result will appear.
Pages with no meta description
- Make sure that all the pages of this website include a meta description. If you don't include one, Google will choose a sample of text from the page to appear in the search engine result. By including a meta description, you can control how your search engine result will appear.
Meta Tags (name attribute)
| Page URL | Name | Content |
| www.esa.int/ | viewport | width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0 |
| www.esa.int/ | facebook-domain-verification | huxggdjw6qgb4kjoxa3s1ixopprlpf |
| www.esa.int/ | description | The European Space Agency portal features the latest news in space exploration, human spaceflight, launchers, telecommunications, navigation, monitoring and space science. |
| www.esa.int/ | keywords | European Space Agency, Moon, Mars, sun, space exploration, probes, missions, satellites, launchers, international space station, ISS, telecommunications, earth observation, navigation, astronauts, solar system, universe, remote sensing, space news, ESA, environment, monitoring, astronomy, Ariane, rocket, Galileo, comet, education, Venus |
| www.esa.int/.../Watch_live_Ariane_6_eight-minute_hot-fire_test | viewport | width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0 |
| www.esa.int/.../Watch_live_Ariane_6_eight-minute_hot-fire_test | description | Watch live on ESA Web TV on 23 November as Europe’s new Ariane 6 rocket goes through a full-scale rehearsal in preparation for its first flight, when teams from ArianeGroup, France’s space agency CNES, and ESA on the ground will complete a launch countdown rehearsal. The test includes the ignition of the core stage Vulcain 2.1 engine, followed by 470 seconds of stabilised operation covering the entire core stage flight phase, as it would function on a launch into space. |
| www.esa.int/.../Watch_live_Ariane_6_eight-minute_hot-fire_test | twitter:card | summary_large_image |
| www.esa.int/.../Watch_live_Ariane_6_eight-minute_hot-fire_test | twitter:site | @esa |
| www.esa.int/.../Week_in_images_13-17_November_2023 | viewport | width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0 |
| www.esa.int/.../Week_in_images_13-17_November_2023 | keywords | Huginn mission, Stars, Galaxy, ESA, European Space Agency, Space, Week in images, Hubble, HST, Hubble Space Telescope, Cosmos, James Webb Space Telescope, JWST, Earth from Space, Astronauts, Andreas Mogensen, ISS, International Space Station |
| www.esa.int/.../Week_in_images_13-17_November_2023 | twitter:card | summary_large_image |
| www.esa.int/.../Week_in_images_13-17_November_2023 | twitter:site | @esa |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | viewport | width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | description | One of the world’s most active volcanoes, Mount Etna, erupted on Sunday – spewing lava and clouds of ash high over the Mediterranean island of Sicily. This image, captured on 13 November by the Copernicus Sentinel-2 mission, has been processed using the mission’s shortwave-infrared bands to show the lava flow at the time of acquisition. |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | twitter:card | summary_large_image |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | twitter:site | @esa |
| www.esa.int/.../Monitoring_methane_from_space | viewport | width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0 |
| www.esa.int/.../Monitoring_methane_from_space | twitter:card | summary_large_image |
| www.esa.int/.../Monitoring_methane_from_space | twitter:site | @esa |
Meta Tags (http-equiv attribute)
| Page URL | Name | Content |
| www.esa.int/ | X-UA-Compatible | IE=edge |
| www.esa.int/.../Watch_live_Ariane_6_eight-minute_hot-fire_test | X-UA-Compatible | IE=edge |
| www.esa.int/.../Week_in_images_13-17_November_2023 | X-UA-Compatible | IE=edge |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | X-UA-Compatible | IE=edge |
| www.esa.int/.../Monitoring_methane_from_space | X-UA-Compatible | IE=edge |
Server behaviour8.4
404 page
Compression
- This website handles missing pages correctly by sending a 404 HTTP status code.
- This website was served with GZIP encoding. This is very good because it reduces the loading time of a web page.
- This website returns page content with or without a trailing slash on the URLs. Search engines might see these as separate pages with duplicate content which they could penalise for.
- Use a 301 redirect or a canonical meta tag to force search engines to see the correct version.
Duplicate pages
- Use a 301 redirect or a canonical meta tag to force search engines to see the correct version.
- This website follows the best practice of using a permanent (HTTP 301) redirect from http://esa.int to http://www.esa.int. This is ideal.
Amount of content8.5
Rendering Chart...
- This website has an average of 486 words per page. The amount of content on a website has been shown to correlate with its search engine ranking.
- Consider the amount of text on this website and increase it if appropriate.
Amount of content discovered
| Page | Characters | Words |
| www.esa.int/ | 7229 | 1072 |
| www.esa.int/.../Watch_live_Ariane_6_eight-minute_hot-fire_test | 2360 | 388 |
| www.esa.int/.../Week_in_images_13-17_November_2023 | 1746 | 273 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | 2753 | 435 |
| www.esa.int/.../Monitoring_methane_from_space | 1882 | 263 |
Page titles9.0
100% of pages have defined titles
20% of page titles are weak
- All pages were found to specify page titles, but one page has a relatively weak title which could be improved. Page titles appear in search results and at the top of the browser's window when visiting the site. Appropriate page titles are particularly important for search engine optimisation.
- Make sure that all pages have a descriptive title. Do not include the address of the page in the title, try not to use excessive punctuation and avoid common words like 'page'.
Page titles
| Page title | Notes |
| European Space Agency | OK |
| ESA - Watch live: Ariane 6 eight-minute hot-fire test | This title appears to be overly complex. Consider a more meaningful title |
| ESA - Week in images: 13-17 November 2023 | OK |
| ESA - Italy's Mount Etna spews lava | OK |
| ESA - Monitoring methane from space | OK |
Headings9.0
- All pages were found to use defined headings. This is excellent as it allows visitors and search engines to summarise the content of webpages quickly. Correctly defined headings aid accessibility and are particularly important for search engine optimisation.
- Some pages did not define headings correctly. The H1 tag should be used for the most top-level heading, with H2 being used for sub-headings and H3 for further sub-headings and so-on. Not conforming to this convention may confuse visitors.
- Ensure that headings are defined in a semantically correct way, i.e. always start with a H1 tag. This is used to summarise the page content. Further tags (H2, H3, H4 etc) are meant to summarise and partition sections within the content.
Page headings detail
| URL | Heading | Level |
| www.esa.int/ | In the spotlight | H2 |
| www.esa.int/ | Recommended | H2 |
| www.esa.int/ | Trending | H2 |
| www.esa.int/ | Featured videos | H2 |
| www.esa.int/ | More | H2 |
| www.esa.int/ | Featured images | H2 |
| www.esa.int/ | Watch live: Ariane 6 eight-minute hot-fire test | H3 |
| www.esa.int/ | Week in images: 13-17 November 2023 | H3 |
| www.esa.int/ | Italy's Mount Etna spews lava | H3 |
| www.esa.int/ | Monitoring methane from space | H3 |
| www.esa.int/ | Launch your career in space! Apply now to the ESA Student Internship Programme | H3 |
| www.esa.int/ | Discover ESA Live: a gateway to ESA’s universe for schools | H3 |
| www.esa.int/ | Euclid: exploring the dark Universe | H3 |
| www.esa.int/ | Space awaits you! More ESA vacancies open for applications | H3 |
| www.esa.int/ | Webb reveals new features in heart of the Milky Way | H3 |
| www.esa.int/ | Arctic Weather Satellite in shape | H3 |
| www.esa.int/ | Juice burns hard towards first-ever Earth-Moon flyby | H3 |
| www.esa.int/ | Earth from Space: North Channel | H3 |
| www.esa.int/ | Spacecraft fall silent as Mars disappears behind the Sun | H3 |
| www.esa.int/ | How students built Ireland’s first satellite | H3 |
| www.esa.int/ | Press conference with ESA project astronaut Marcus Wandt | H3 |
| www.esa.int/ | More items | H3 |
| www.esa.int/ | Euclid’s view of the Horsehead Nebula | H3 |
| www.esa.int/ | Our missions | H3 |
| www.esa.int/ | Discover ESA | H3 |
| www.esa.int/ | This is ESA | H3 |
| www.esa.int/ | ESA Blog Navigator | H3 |
| www.esa.int/ | ESA Brand Centre | H3 |
| www.esa.int/ | The Sun in high resolution | H3 |
| www.esa.int/ | Juice burns hard towards first-ever Earth-Moon flyby | H3 |
| www.esa.int/ | Webb reveals new features in heart of the Milky Way | H3 |
| www.esa.int/ | Euclid's first images: the dazzling edge of darkness | H3 |
| www.esa.int/ | 10 remarkable Earth facts | H3 |
| www.esa.int/ | Watch live: Ariane 6 eight-minute hot-fire test | H3 |
| www.esa.int/ | Where is the International Space Station? | H3 |
| www.esa.int/ | How students built Ireland’s first satellite | H3 |
| www.esa.int/ | Press conference with ESA project astronaut Marcus Wandt | H3 |
| www.esa.int/ | Training for space | H3 |
| www.esa.int/ | Monitoring methane from space | H3 |
| www.esa.int/ | Open doors for the ESA-ESAC Open Day | H3 |
| www.esa.int/ | More items | H3 |
| www.esa.int/ | Careers at ESA | H3 |
| www.esa.int/ | Business with ESA | H3 |
| www.esa.int/ | Open Space Innovation Platform | H3 |
| www.esa.int/ | ESA Commercialisation Gateway | H3 |
| www.esa.int/ | Earth from Space: North Channel | H3 |
| www.esa.int/ | Italy's Mount Etna spews lava | H3 |
| www.esa.int/ | Fall into an ice giant’s atmosphere | H3 |
| www.esa.int/ | Earth from Space: Autumn in Japan | H3 |
| www.esa.int/ | Earth through a 2-mm lens | H3 |
| www.esa.int/ | More items | H3 |
| www.esa.int/ | ESA Vision | H4 |
| www.esa.int/ | ESA Pillars | H4 |
| www.esa.int/ | ESA Programmes | H4 |
| www.esa.int/ | ESA and You | H4 |
| www.esa.int/.../Watch_live_Ariane_6_eight-minute_hot-fire_test | Watch live: Ariane 6 eight-minute hot-fire test | H1 |
| www.esa.int/.../Week_in_images_13-17_November_2023 | Week in images: 13-17 November 2023 | H1 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | Italy's Mount Etna spews lava | H1 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | Etna erupts | H3 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | Etna erupts | H3 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | New Etna eruption | H3 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | Mount Etna eruptions | H3 |
| www.esa.int/.../Italy_s_Mount_Etna_spews_lava | Mt. Etna, Sicily – MERIS - 28 October 2002 | H3 |
| www.esa.int/.../Monitoring_methane_from_space | Monitoring methane from space | H1 |
| www.esa.int/.../Monitoring_methane_from_space | Monitoring methane from space - with subtitles | H3 |
| www.esa.int/.../Monitoring_methane_from_space | Global methane concentrations in 2020 | H3 |
| www.esa.int/.../Monitoring_methane_from_space | Methane leak visible from space | H3 |
| www.esa.int/.../Monitoring_methane_from_space | Global methane concentrations | H3 |
| www.esa.int/.../Monitoring_methane_from_space | Global methane | H3 |
Mobile10.0
- All of this website appears to be optimised for viewing on a mobile phone or a tablet.
Media specific CSS detected
Images10.0
0% of images have a clearly defined size
No images are being resized by the browser
- No images have defined sizes.
- Add width and height attributes to all image tags. The width and height you specify should be the same as the source image. If you want to resize an image in the browser, use CSS.
Non Explicitly Sized Images
- Add width and height attributes to all image tags. The width and height you specify should be the same as the source image. If you want to resize an image in the browser, use CSS.
Printability10.0
100% of pages are optimised for printing
- All of this website appears to be optimised for printing (using CSS).
Media specific CSS detected
Popularity10.0
809251Estimated monthly organic visitors
- This website appears to have a high number of monthly website visits each month
Source: Ahrefs
Freshness10.0
Last updated November 20, 2023
- It looks like this website was last updated on Monday, 20 November 2023. This is good because visitors perceive up-to-date websites as more credible. Websites that are updated regularly are also spidered by search engines more often.
- To find this information we used the last modified dates reported by this website's server in addition to looking for dates written on each page.
All dates found
Twitteri
This website does not appear to be associated with a Twitter account.
- There was a problem checking the Twitter accounts associated with this website.
Fast, branded website audits
Insites creates professional website reports that can be shared with your clients.
How does Insites compare?
Nibbler | Insites | |
|---|---|---|
| Tests | 17 fixed tests | 50+ testsCovers SEO, SEM, Google My Business, reviews, social media and much more |
| Add your branding | No | Yes |
| Export & share | No | PDF & link |
| Lead generation | No | Embed on your site |
| Competitor audits | No | Yes |
| Test as a batch | No | Yes |
| Integrations + API | No | Yes |
| Multi-lingual | No | 20+ languages |
| Try it free |
Nibbler tested the following pages
- https://www.esa.int/
- https://www.esa.int/Enabling_Support/Space_Transportation/Ariane/Watch_live_Ariane_6_eight-minute_hot-fire_test
- https://www.esa.int/About_Us/Week_in_images/Week_in_images_13-17_November_2023
- https://www.esa.int/ESA_Multimedia/Images/2023/11/Italy_s_Mount_Etna_spews_lava
- https://www.esa.int/ESA_Multimedia/Videos/2023/11/Monitoring_methane_from_space