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 webpage has 13 'img' tags and all of them has the required 'alt' attribute.

Congratulations! Your page does not use HTML deprecated tags.

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

Congratulation! There is no occurrence of any severe JavaScript Errors in your web page.

Congratulations! Your HTML size is 4.38 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 22.74 Kb to 4.38 Kb (81 % size savings). This helps ensure a faster loading web page and improved user experience.

Your site loading time is around 6.852 seconds and is over 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.

Congratulations! Your webpage use 'Expires' header for your images and the browsers will display these images from the cache.

http://www.opinity.nl and http://opinity.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.

We 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.

Your website is not using media queries. You should consider using this technique in order to implement 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 page does not use the canonical link tag.

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 disallow the search engines access to some parts of your website. You are advised to check carefully if the access to these resources or pages must be blocked.