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PDF Remediation Checklist

The order in which content is presented or accessed needs to be defined for screen readers, keyboard navigation and small or zoomed in screens.

Tag order defines how screen readers will read the content. Tab order determines how users will tab through a document with their keyboard....Read more

Accessible List Structure

Some assistive technology allows users to navigate from list to list or item to item. These lists must follow the structure below to support comprehension.

<L> - the List tag, must contain one or more Ll tags

<Ll> - List Item tag...Read more

What You Need to Know About Headings "An outline , also called a hierarchical outline , is a list arranged to show hierarchical relationships and is a type of tree structure . An outline is used to present the main points (in...Read more

To make sure that the PDF is sufficiently accessible, use tools to simulate the experience using a screen reader or for a low vision reader.

Keyboard Simulation

Simulating the experience of a keyboard reader is also useful. On the tags panel, check to make the order of the tags correct...Read more

WCAG 2.0 Contrast Ratios

In order to make PDFs accessible for low vision readers, a certain amount of contrast is required.

For normal text WCAG 2.0 requires contrast ratios of 4.5:1 (AA) or 7:1 (AAA). For large text WCAG 2.0 requires contrast ratios of...Read more
If your document is not a form, you can skip this section. Web Accessible Forms

Print forms are inaccessible to those who have low vision and constrained hand mobility. In order for these forms to be accessible they must be interactive and can be completed using a computer.

Forms are...Read more
Accessible Table Structure

In order for assistive technologies to read tables, they need to be tagged so that the columns and rows are understood thereby preserving the logical relationship among information fields.

If information is presented in a tabular layout purely for aesthetic...Read more

Why Format Links?

Screen reader users often navigate from link to link and skip the text in between. Link text should make sense out of context and place distinguishing information first.

Screen readers allow users to view a list of all links on a page. This list can be presented...Read more

Bookmarks help users of assistive technology navigate to sections of long documents. Bookmarks should follow the existing structure including the table of contents and headers.

Bookmarks are good for breaking long documents into chunks and allowing users to jump directly to the content...Read more

In order to be WCAG 2.0 compliant, all images must have accompanying text that conveys the same information. Images that add no meaningful information should be marked as decorative. Doing so will prompt assistive technology to ignore these elements and they will not be flagged for...Read more