This website is using a robots.txt file.

Your site lacks a sitemap file. Sitemaps can help robots index your content more thoroughly and quickly. Read more on Google's guidelines for implementing the sitemap protocol.

Your website doesn't use <img> tags.

Congratulations! Your page does not use HTML deprecated tags.

Congratulations! Your website is using the correct version of Google Analytics tracking code.

Congratulations! There are no severe JavaScript errors on your web page.

Congratulations! Your HTML size is 4.34 Kb and this is under the average web page size of 33 Kb.
This leads to a faster page loading time than average.

Congratulations! Your page is successfully compressed using gzip compression on your code.
Your HTML is compressed from 17.65 Kb to 4.34 Kb (75 % size savings). This helps ensure a faster loading web page and improved user experience.

Your site loading time is around 3.49 seconds and this is under the average loading speed which is 5 seconds.

Your page has more than 20 http requests, which can slow down page loading. You can try reducing http requests through various methods such as using text instead of images, using css sprites, using data URIs instead of images, or combining several external files together into one.

Your site is not using expires headers for your images. An expires tag can help speed up the serving of your webpages for users that regularly visit your site and see the same images. Learn more about how to add expires headers to your images.

http://www.edu-actief.nl and http://edu-actief.nl/ resolve to the same URL.

Your website is not using https, a secure communication protocol. Even for sites that do not collect senstive customer information, search engines suggest that switching to https is an increasingly good idea and may help improve rankings. Note: if your site relies primarily on adsense income, be aware that using https may be detrimental to ad earnings.

Congratulations! Your webpage does not include email addresses in plaintext.

Congratulations, your website uses media query technique, which is the base for responsive design functionalities.

Your webpage doesn't take the advantages of HTML Microdata specifications in order to markup structured data. View Google's guide for getting started with microdata.

Your webpage does not use the noindex meta tag. This means that your webpage will be read and indexed by search engines.

Your webpage is using the canonical link tag. This means that your webpage is not the preferred one to use in the search results.

Your webpage does not use the nofollow meta tag. This means that search engins will crawl all links from your webpage.

Your robots.txt file is using the disallow directive but it's empty. This means that the whole website can be crawled by search engines.

Congratulations! Your DNS server is using an SPF record. This SPF record is listed below: