Wcag pdf sufficient techniques definition

For these and other additional requirements, the w3cs technique documents both general and pdfspecific techniques provide guidance for authors interested in complying with wcag 2. Web accessibility expert david berman gives a quick overview of web content accessibility guidelines, wcag 2. Dpub specific wcag pdf techniques w3cdpubaccessibility. An act rule is a plain language description of how to test a specific type of content for a specific aspect of an accessibility requirement. Department of health and human services required fixes for pdf files document properties are missing. Ten common pdf accessibility errors with solutions uottawa. Techniques and other specifications for each technology. Accessibility conformance testing act rules format 1. Other screen readers dont have enough historical data yet to plot trends.

Technologyspecific techniques do not replace the general techniques. The w3c web content accessibility guidelines wcag 2. The w3c has released a document on pdf techniques for wcag 2. For information on using other techniques, see understanding techniques for wcag success criteria, particularly the other techniques section. Make pdf files compliant with web content accessibility. Web content accessibility guidelines web standard wcag 2.

Enable tagging in the application in which the pdf was authored, and recreate the pdf. It is part of a series of documents published by the w3c web accessibility initiative wai to support wcag 2. For example, there is a rich set of techniques describing how to meet wcag success criteria for adobe pdf documents, and adobe includes a pdf accessibility assessment tool that also helps authors mitigate accessibility failings found by the tool as part of adobe acrobat. Specifying the document title using the title entry in the document information dictionary of a pdf document resources.

Make pdf files compliant with web content accessibility guidelines 2. If a page uses frames and the frames are appropriately titled, this is a sufficient technique for bypassing individual frames. Pdf accessibility checker pac freeware program provides a fast way to test the accessibility of pdf files. Providing the expansion or explanation of an abbreviation g103. All of these layers of guidance principles, guidelines, success criteria, and sufficient and advisory techniques work together to provide guidance on how to make content more accessible.

Some advisory techniques address accessibility barriers that are not covered by the testable success criteria. Techniques for pdf authored over the past two years since the release of the last update to. Beyond these techniques, developers need to conduct additional research to ensure that the content or applications they create meet the wcag 2. Within each subsection, there may be situations to describe when a set of techniques need to be considered. The web content accessibility guidelines wcag are part of a series of web accessibility guidelines published by the web accessibility initiative wai of the world wide web consortium w3c, the main international standards organization for the internet. This document is informative and provides three additional layers, referred to as sufficient techniques, advisory techniques and common failures. Jan 11, 2020 wcag sufficient techniques reliability trend. If a page has a proper heading structure, this may be considered a sufficient technique instead of a skip to main content link. You can find the techniques in the same documents as the success criteria.

Techniques for pdf authored over the past two years since the release of the last update to the wcag techniques which included techniques for flash are now part of the larger collection of techniques. A customizable quick reference to read the wcag success criteria, and follow links from there to specific topics in understanding wcag 2. This paper presents a conceptual analysis of how the web content accessibility guidelines wcag 2. The combination i define is a viable at for accessible pdf. Color contrast is insufficient, color contrast ratio between text and. Wcag is a set of technical standards developed under the guidance of the world wide web. Techniques and failures for web content accessibility guidelines 2. Providing the definition of a word or phrase used in an unusual or restricted way. The accessibility conformance testing act rules format defines the requirements for these test descriptions, known as accessibility conformance testing rules act rules. The objective of this technique is to provide an expansion or definition of an abbreviation for the first occurrence of the abbreviation. Where common failures are known, these are also documented. Providing the definition of a word or phrase used in an unusual or restricted way g102. However, it is not necessary to use these particular techniques.

This graph shows reliability over time for wcag techniques in nvda, jaws and voiceover. Most success criteria list multiple sufficient techniques, and any of the sufficient techniques can be used to meet the success criterion. Background on these resources is provided in the wcag overview and the wcag 2 documents. To conform to the wcag standards, a site must satisfy all of its conformance requirements, which means it must satisfy the success criteria for the different guidelines. See also sufficient and advisory techniques in understanding wcag 2. Dec 12, 2017 sufficient techniques must be documented using readily available formats, user agents and assistive technologies. Adobe guide to pdf accessibility accessibility for online. W3c cautions against requiring w3cs sufficient techniques. Any changes marked are a draft and are not approved by the dpub accessibility task force and the wcag working group pdf techniques. Jan 05, 2017 other techniques will apply depending on the technologies used e. Instead, it is expected that content authors will usually use how to meet wcag 2.

There is more to an accessible pdf file than tags, but an untagged pdf would not be considered accessible. Authors may discover a new way to address a success criteria, in a way not yet covered in the existing techniques, and be able to demonstrate why it is sufficient. In a previous article, we discussed the web content accessibility guidelines wcag, how they came into being, and why its is the worlds most universally accepted set of web accessibility standards. Challenges with accessibility guidelines conformance and. Common pdf accessibility errors and their solutions. By focusing more on principles rather than techniques, version 2. Feb 19, 2019 for information about the techniques, see introduction to techniques for wcag 2. Pdf accessibility defining pdf accessibility webaim. This web page lists pdf techniques from techniques for wcag 2. Perceivable web content is made available to the senses sight, hearing, andor touch guideline 1. Any changes marked are a draft and are not approved by the dpub accessibility task force and the wcag working group. In 2017, section 508 was updated to align with the web content accessibility guidelines wcag 2. There are two major issues that need to be resolved to derive valid and reliable.

Helpful resources authors not familiar with wcag 2. One benefit of following these guidelines is that content becomes more usable for all users. If no is the answer to any item, then the document is not 508 compliant. My question is therefore not what required is, but what sufficient is and i dont want to speak in favour of one or another reader or reflow. This issue is a violation of section 508 and wcag 2. To fix this item automatically, select tagged pdf on the accessibility checker panel, and then choose fix from the options menu. For important information about techniques, see understanding techniques for wcag success. Using markup and visual formatting to help users recognize words that have special meaning future link providing a voiceenabled dictionary search so that users who have difficulty typing or spelling can speak the word whose definition they need future link. Pdf developers need this type of clarity on how to. There are subsections for sufficient techniques, advisory techniques, and failures. Tagged pdf documents containing abbreviations or acronyms.

That brings us to the last of the four layers of wcag guidance, sufficient and advisory techniques. For example, a reference to an abbreviation, such as wcag, should be available as web content accessibility guidelines wcag on its first occurrence in a document. Wuhcag is all about holistic web accessibility that means taking everything about your website into account. Providing visual illustrations, pictures, and symbols to help explain ideas, events, and processes. Draft pdf web standards web site information ca dept of. Gsa technology tools compilation of tools from private industry and government agencies. Techniques are informativethat means they are not required. Defining table header cells in adobe acrobat 9 pro. In html this means using tags and css to position elements on the page. Creating an international technical standard is not something you do overnight.

Pdfua clarifies and simplifies the pdfspecific technical requirements to meet wcag 2. There may be other techniques not documented by the w3c that could also meet the success cri teria. Like the success criteria, the information comes in the form of details for specific guidelines. Convey information by context, markup, graphic coding, or other means in addition to color. This section references techniques that can be used to meet the guideline or success criterion. This short tutorial clears up the confusion about accessibility standards and helps you select the correct standard for your website, word files, pdfs, and other digital content.