Nibbler SEO audit for www.sleepfoundation.org
Summary
Overall9.3
The overall score for this website.
Accessibility9.6
How accessible the website is to mobile and disabled users.
The following tests contribute to this score:
Experience9.5
How satisfying the website is likely to be for users.
The following tests contribute to this score:
Marketing9.5
How well marketed, and popular the website is.
The following tests contribute to this score:
Technology9.2
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 12:04 on 28 Mar 2024 (GMT).
Top priorities for website improvement
- 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. (read more)
- Consider using descriptive words or phrases (e.g. 'News', 'September 2012 financial results') in your anchor tag to benefit search engine optimisation. (read more)
- 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. (read more)
Printability6.0
60% of pages are optimised for printing
- 2 pages of this website do not appear to be optimised for printing (using CSS).
- Add printable stylesheets for all pages, wherever possible. In most cases, websites can share printable stylesheets over many or all pages, as with screen-based stylesheets.
Print optimised pages
Page Print www.sleepfoundation.org/ Not detected www.sleepfoundation.org/my-sleep-profile Not detected www.sleepfoundation.org/best-mattress Optimised www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers Optimised www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain Optimised
- Add printable stylesheets for all pages, wherever possible. In most cases, websites can share printable stylesheets over many or all pages, as with screen-based stylesheets.
Media specific CSS detected
Images8.0
99% of images have a clearly defined size
411 images are being resized by the browser
- Some images (1.0%) don't have defined sizes using width and height attributes in the HTML. These attributes are optional, but strongly recommended as they help the browser arrange the page more quickly.
- 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.
- One image is not in a web-friendly format.
- Make sure all images on this website are JPEG, PNG, SVG or GIF format.
- 411 images are being stretched in the browser.
- The width and height you specify in an image tag should be the same as the source image. If you want to resize an image in the browser, use the CSS width and height properties.
Stretched Images
- The width and height you specify in an image tag should be the same as the source image. If you want to resize an image in the browser, use the CSS width and height properties.
Meta tags8.4
This is how this website will look in Google search listings:
Sleep Foundation | Better Sleep for a Better You
www.sleepfoundation.org/
SleepFoundation.org is the leading source for evidence-based, medically reviewed sleep health information and in-depth product testing.
- All pages include at least some metadata, but only 80.0% 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.
Meta Tags (name attribute)
| Page URL | Name | Content |
| www.sleepfoundation.org/ | viewport | width=device-width, initial-scale=1 |
| www.sleepfoundation.org/ | robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| www.sleepfoundation.org/ | description | SleepFoundation.org is the leading source for evidence-based, medically reviewed sleep health information and in-depth product testing. |
| www.sleepfoundation.org/ | twitter:card | summary_large_image |
| www.sleepfoundation.org/ | msapplication-tileimage | https://www.sleepfoundation.org/wp-content/uploads/2024/02/cropped-favicon_new-270x270.png |
| www.sleepfoundation.org/my-sleep-profile | viewport | width=device-width, initial-scale=1 |
| www.sleepfoundation.org/my-sleep-profile | robots | noindex, nofollow |
| www.sleepfoundation.org/my-sleep-profile | twitter:card | summary_large_image |
| www.sleepfoundation.org/my-sleep-profile | msapplication-tileimage | https://www.sleepfoundation.org/wp-content/uploads/2024/02/cropped-favicon_new-270x270.png |
| www.sleepfoundation.org/best-mattress | viewport | width=device-width, initial-scale=1 |
| www.sleepfoundation.org/best-mattress | robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| www.sleepfoundation.org/best-mattress | description | Find the best mattress of 2024 for every sleeper based on extensive testing as well as discounts and tips for finding your perfect bed. |
| www.sleepfoundation.org/best-mattress | twitter:card | summary_large_image |
| www.sleepfoundation.org/best-mattress | twitter:label1 | Est. reading time |
| www.sleepfoundation.org/best-mattress | twitter:data1 | 11 minutes |
| www.sleepfoundation.org/best-mattress | msapplication-tileimage | https://www.sleepfoundation.org/wp-content/uploads/2024/02/cropped-favicon_new-270x270.png |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | viewport | width=device-width, initial-scale=1 |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | description | Do you sleep on your side? Read our comprehensive guide to find the best mattress for side sleepers and learn more about this popular sleep position. |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | twitter:card | summary_large_image |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | twitter:label1 | Est. reading time |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | twitter:data1 | 8 minutes |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | msapplication-tileimage | https://www.sleepfoundation.org/wp-content/uploads/2024/02/cropped-favicon_new-270x270.png |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | viewport | width=device-width, initial-scale=1 |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | robots | index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1 |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | description | If you have back pain, we recommend beds that offer support and pressure relief. See which mattresses we select as the best. |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | twitter:card | summary_large_image |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | twitter:label1 | Est. reading time |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | twitter:data1 | 15 minutes |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | msapplication-tileimage | https://www.sleepfoundation.org/wp-content/uploads/2024/02/cropped-favicon_new-270x270.png |
Meta Tags (http-equiv attribute)
Internal links8.6
- 16 links are weakly described. Common weak links include 'click here' and 'read more'. These links fail to describe the content the link points to.
- Consider using descriptive words or phrases (e.g. 'News', 'September 2012 financial results') in your anchor tag to benefit search engine optimisation.
Weak link text
- Consider using descriptive words or phrases (e.g. 'News', 'September 2012 financial results') in your anchor tag to benefit search engine optimisation.
- 32 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.
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
Amount of content9.8
Rendering Chart...
- This website has an average of 6,796 words per page. The amount of content on a website has been shown to correlate with its search engine ranking.
Amount of content discovered
| Page | Characters | Words |
| www.sleepfoundation.org/ | 11647 | 1655 |
| www.sleepfoundation.org/my-sleep-profile | 5306 | 666 |
| www.sleepfoundation.org/best-mattress | 72639 | 11295 |
| www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers | 63718 | 9707 |
| www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain | 67997 | 10659 |
Mobile10.0
- All of this website appears to be optimised for viewing on a mobile phone or a tablet.
Media specific CSS detected
Server behaviour10.0
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 follows the best practice of using a permanent (HTTP 301) redirect between URLs with/without trailing slashes. This is ideal.
- This website follows the best practice of using a permanent (HTTP 301) redirect from http://sleepfoundation.org to http://www.sleepfoundation.org. This is ideal.
Analytics10.0
100% of pages use analytics
Google Tag Manager
- Every page in this website is using Google Tag Manager. This is excellent and should allow for a complete analysis of visitor behaviour.
Page titles10.0
100% of pages have defined titles
0% of page titles are weak
- All pages were found to use page titles appropriately. 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.
URL format10.0
Every URL is well written
- This website uses appropriate web addresses (URLs) throughout. This is excellent and will help search engine placement, usability and the marketability of this website.
Freshness10.0
Last updated March 25, 2024
- It looks like this website was last updated on Monday, 25 March 2024. 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.
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Nibbler tested the following pages
- https://www.sleepfoundation.org/
- https://www.sleepfoundation.org/my-sleep-profile
- https://www.sleepfoundation.org/best-mattress
- https://www.sleepfoundation.org/best-mattress/best-mattress-for-side-sleepers
- https://www.sleepfoundation.org/best-mattress/best-mattress-for-back-pain