Report on the simplified accessibility audit

Back to Accessibility statement

General info

Website url
www.naturalsciences.be
Audit date
05 January 2024
Amount of pages scanned
2.041

Accessibility Audit

1. Perceivable

Information and user interface components must be presentable to users in ways they can perceive.

1.1 Text Alternatives

Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.

1.1.1 Non-text Content
DescriptionPagesErrorsRef(s)
Providing text alternatives for the area elements of image maps00H24
Providing link text that describes the purpose of a link for anchor elements58235H30
Using alt attributes on img elements00H37
Using null alt text and no title attribute on img elements for images that Assistive Technology should ignore00H67
Using alt attributes on images used as submit buttons00H36
Combining adjacent image and text links for the same resource00H2
Using the body of the object element00H53
Providing link text that describes the purpose of a link for anchor elements00H35

1.3 Adaptable

Create content that can be presented in different ways (for example simpler layout) without losing information or structure.

1.3.1 Info and Relationships
DescriptionPagesErrorsRef(s)
Using semantic markup to mark emphasized or special text1921H49
Using the scope attribute to associate header cells and data cells in data tables00H63
Using id and headers attributes to associate data cells with header cells in data tables00H43
  • Using id and headers attributes to associate data cells with header cells in data tables
  • Using the scope attribute to associate header cells and data cells in data tables
00H43   H63
Using the summary attribute of the table element to give an overview of data tables00H73
Using caption elements to associate data table captions with data tables00H39
  • Using caption elements to associate data table captions with data tables
  • Using the summary attribute of the table element to give an overview of data tables
00H39   H73
Providing a description for groups of form controls using fieldset and legend elements00H71
Using h1-h6 to identify headings131244H42
Failure of Success Criterion 1.3.1 due to the use of role presentation on content which conveys semantic information00F92
Using label elements to associate text labels with form controls00H44
Failure of Success Criterion 4.1.2 due to a user interface control not having a programmatically determined name00F68

1.4 Distinguishable

Make it easier for users to see and hear content including separating foreground from background.

1.4.3 Contrast (Minimum)
DescriptionPagesErrorsRef(s)
Ensuring that a contrast ratio of at least 3:1 exists between text (and images of text) and background behind the text00G145
Ensuring that a contrast ratio of at least 4.5:1 exists between text (and images of text) and background behind the text27132G18

2. Operable

User interface components and navigation must be operable.

2.2 Enough Time

Provide users enough time to read and use content.

2.2.1 Timing Adjustable
DescriptionPagesErrorsRef(s)
Failure of Success Criterion 2.2.1 and 2.2.4 due to using meta redirect with a time limit00F40
Failure of Success Criterion 2.2.1, 2.2.4, and 3.2.5 due to using meta refresh to reload the page00F41
2.2.2 Pause, Stop, Hide
DescriptionPagesErrorsRef(s)
Failure of Success Criterion 2.2.2 due to using the blink element00F47

2.4 Navigable

Provide ways to help users navigate, find content, and determine where they are.

2.4.1 Bypass Blocks
DescriptionPagesErrorsRef(s)
Using the title attribute of the frame and iframe elements33H64
  • Adding a link at the top of each page that goes directly to the main content area
  • Adding a link at the beginning of a block of repeated content to go to the end of the block
  • Adding links at the top of the page to each area of the content
00G1   G123   G124
2.4.2 Page Titled
DescriptionPagesErrorsRef(s)
Providing a title using the title element00H25
2.4.8 Location
DescriptionPagesErrorsRef(s)
Using the link element and navigation tools00H59

3. Understandable

Information and the operation of the user interface must be understandable.

3.1 Readable

Make text content readable and understandable.

3.1.1 Language of Page
DescriptionPagesErrorsRef(s)
Using the language attribute on the HTML element00H57
3.1.2 Language of Parts
DescriptionPagesErrorsRef(s)
Using language attributes to identify changes in the human language00H58
3.1.6 Pronunciation
DescriptionPagesErrorsRef(s)
Using the ruby element00H62

3.2 Predictable

Make Web pages appear and operate in predictable ways.

3.2.2 On Input
DescriptionPagesErrorsRef(s)
Providing submit buttons00H32

4. Robust

Content must be robust enough that it can be interpreted by a wide variety of user agents, including assistive technologies.

4.1 Compatibel

Maximize compatibility with current and future user agents, including assistive technologies.

4.1.1 Parsing
DescriptionPagesErrorsRef(s)
Failure of Success Criterion 4.1.1 due to duplicate values of type ID17F77
4.1.2 Name, Role, Value
DescriptionPagesErrorsRef(s)
Using HTML form controls and links1625H91