Tools for Testing Digital Accessibility - WAVE, NDVA, and PAC
Try these 3 powerful tools for testing digital accessibility:
- The WAVE tool is a great way to assess web pages.
- NVDA is one of the main assistive technologies used by people who want content read out loud. It can be used to test most files: PDFs, Word docs, PPT files, Excel docs, etc. as well as web pages.
- PAC is a powerful tool (with a pretty steep learning curve) for deep testing of PDF files.
WAVE Tool for testing Web Pages
The WAVE Web Accessibility Evaluation Tool is a great (free!) option for checking web content. You can either:
- Use the web-based option to evaluate a publicly-available web page; or
- Add the WAVE plugin on your Chrome browser to test pages that sit behind a login
Watch the Introduction to WAVE demo video
1. Using WAVE Web-Based Tool
The WAVE web tool is great for testing publicly accessible web pages.
- To use the WAVE tool, go to wave.webaim.org.
- Type in the url for the web page you want to evaluate in the field provided, and hit return.

- WAVE will display a summary of the page's accessibility status in the "Details" tab at the upper left corner of the screen. Ideally, you should try to eliminate all errors.

- Below the summary in the left hand column, you can scroll down and see a more detailed lists of alerts, features, tags, etc.
If you click on each icon, WAVE will show you exactly where on the page that specific instance is located.
2. Using WAVE Plugin for Chrome
If you want to test the accessibility of a web page that sits behind a login (and is not publicly available), you'll want to install and use the WAVE extension for Chrome.
- The WAVE Evaluation Tool plugin is available at https://chromewebstore.google.com/detail/wave-evaluation-tool/jbbplnpkjmmeebjpijfedlgcdilocofh.
.

- Click the "Add to Chrome" button.
- Once the plugin has been installed, you can start testing a web page. Start by navigating to the page of interest by typing the url into Chrome.

- Similar to the web browser option, you'll see a summary of the status of the page in the left column within the Details tab.

NVDA
NVDA is one of the most commonly used screen readers, and it serves as a great way to test the digital accessibility of your Word docs, PDFs, websites, data tables, etc.
- You can download NVDA for free at https://www.nvaccess.org/download/
- Watch "What is NVDA?" introductory video
- Watch a video demo of NVDA being used to test website accessibility
- Download NVDA keyboard shortcuts PDF file to aid with navigating, reading, and interacting using NVDA.
PAC Tool for deep testing of PDF files
PAC (PDF Accessibility Checker) is a free PDF accessibility checking tool developed in Germany that is aligned to global standards. The program has passed comprehensive security scans, showing no signs of viruses, malware, or spyware. You can download it at: https://pac.pdf-accessibility.org/en
Once you run a scan of your PDF file, you'll be able to see specific error flags, along with a precise view of where the error is located on the PDF. There are also links within PAC that point to videos and docs with guidance on how to fix each flagged issue.
