![]() Dick PhD, Knowbility Inc. Examples of such content can include images, maps, videos, games, diagrams, presentations, data tables, and interfaces where users need to keep the toolbar in view while modifying content, such as a paint program. Operational Overhead Caused by Horizontal Scrolling Text, Wayne E. Flow Notes Reflow isn’t required for content that would lose its meaning or operability if it did not appear in its standard manner. Use responsive design to allow your content to zoom and respond to various screen sizes. Everyone benefits when all content is easily viewed on a mobile device. People with mobility issues may have difficulting scrolling in more than one direction. 1 It is easier for for people who enlarge text to read word-wrapped text line by line rather than scrolling back and forth across long lines of text. An example is an application to simulate playing the piano. Success Criterion 1.4. There are very few examples where an application’s orientation must remain fixed and cannot change. Hint, it will also help to meet new success criteria 1.4.10 Reflow and 1.4.12 Text Spacing. Of those students, about 800 are deafblind. Of those students identified, 8,300+ receive special education services. When content in your site or application is zoomed up to 400, does text wrap into one column so. There are about 11,000 children and young adults identified as blind, visually impaired, or deafblind in Texas. Research shows that horizontal scrolling significantly reduces reading comprehension. Jonathan -Original Message- From: Detlev Fischer <> Sent: Tuesday, 7:06 AM To: WCAG <> Subject: 1.4.10 Reflow and mobile user agents As I am trying to edit the Understanding text of 1.4. Responsive design and development of the application will meet this success criteria. Reflow - Success Criterion 1.4.10 (Level AA).Users with low vision who need to make the content larger benefit when the layout adjusts. Some graphics and images must also scroll in both directions to display correctly. ![]() It needs to scroll in both directions to remain usable. You can’t break up a map into a stack of blocks. There are some features that can’t be adjusted to scroll in only one direction. 1.4.10 Reflow 1.4.11 Non-text Contrast 1.4.12 Text Spacing 1.4.13 Content on Hover or Focus 2. Enlargement enables perception of characters. Note: Video contains moving/scrolling content. For people with low vision, enlarged text with reflow enables reading. Notice how the navigation menu across the top collapses into a menu button in the upper right as the screen size diminishes. When zoomed, the page has a vertical arrangement and I scroll in one direction, up and down, to access information. While viewing the Knowbility web site in Chrome I zoomed from 100 to 400%. The 20 second video below demonstrates how the Knowbility website adusts to a changing window size. The need for resizing may be due to zooming on a desktop device or viewing within a smaller viewport such as a mobile device. Many sites today use responsive design to adjust the view of the application to match the screen size. Zooming by 400% reduces the width to 320 (1280 divided by 4) and the height to 256 (1024 divided by 4) which are “standard” mobile sizes. ![]() The starting values of 1280 x 1024 are an accepted “standard” desktop size. with vertical text), the 256 CSS pixels is equivalent to a starting viewport height of 1024px at 400% zoom.Įxamples of content which require two-dimensional layout are images, maps, diagrams, video, games, presentations, data tables, and interfaces where it is necessary to keep toolbars in view while manipulating content. For web content which are designed to scroll horizontally (e.g. Note: 320 CSS pixels is equivalent to a starting viewport width of 1280 CSS pixels wide at 400% zoom. Horizontal scrolling content at a height equivalent to 256 CSS pixels.Įxcept for parts of the content which require two-dimensional layout for usage or meaning.Vertical scrolling content at a width equivalent to 320 CSS pixels.1.4.10 Reflow (Level AA)Ĭontent can be presented without loss of information or functionality, and without requiring scrolling in two dimensions for: Users with low vision often require magnified screens or increased font sizes to successfully read displayed text. Make it easier for users to see and hear content including separating foreground from background. There are 4 new success criteria under the 1.4 guideline, Distinguishable. 3.3.Our series on the new WCAG 2.1 Success Criteria continues with the new level AA criteria aimed at low vision.1.2.7 Extended Audio Description (Prerecorded).1.2.3 Audio Description or Media Alternative (Prerecorded).1.2.1 Audio-only and Video-only (Prerecorded).
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