Accessibility policy

WCAG 2.0 (level AA)

Certhon USA, LLC and Certhon Build B.V. strive to improve the usability and accessibility of their website and mobile application for all users, including those with disabilities. To help Certhon achieve this, we are incorporating best practices and standards as defined by WCAG 2.0 (level AA).

To comply with the guidelines of the WCAG 2.0 legislation, the following changes have been made to the website:

  • ARIA labels added to input fields;
  • Title added to video embeds (YouTube, Vimeo);
  • Viewport: maximum scale removed, allowing unlimited zooming;
  • Instead of image ‘alt’ text, names in titles are added in overviews (for products, projects, news);
  • ARIA roles set for contact buttons, slideshow / header and breadcrumbs.

These adjustments have been tested with the tools Deque axe and Google Lighthouse. After the adjustments, these tools gave an average improvement of 25% on all pages, with a stable score of 94%. Certhon has no influence on the embeds / iframes that have been loaded into the website through the use of external content.

If you experience difficulty accessing or using information on the website or mobile application of Certhon USA, LLC and Certhon Build B.V., please contact Certhon at In your message, please provide your contact information, the web address or other location where you experienced difficulty, and a brief description of the problem you encountered.