Create and verify PDF accessibility, Acrobat Pro – Make PDFs accessible (Acrobat Pro)
These documents are inherently inaccessible because the end result is an image, not text that can be tagged into a logical document structure or reading order. In this case, you can examine, confirm, or correct the suspect text. To have Acrobat assign tags automatically to annotations as they’re created, choose Tag Annotations from the Options menu on the Tags panel.
– Adobe acrobat x pro accessibility guide pdf accessibility repair workflow free download
These stages are presented in an order that suits most needs. However, you can perform tasks in a different order or iterate between some of the stages. In all cases, first examine the document, determine its intended purpose, and use that analysis to determine the workflow that you apply.
Whenever possible, think about accessibility when you create the source files in an authoring application, such as a word-processing or page-layout application.
Typical tasks in the authoring application include adding alternate text to graphics, optimizing tables, and applying paragraph styles or other document-structure features that can be converted to tags.
For more information, see Creating a tagged PDF from an authoring application. Use the Forms tools to create fillable form fields, such as buttons, check boxes, pop-up menus, and text boxes. When you create a field, type a description in the Tooltip box in the Properties dialog box for that field.
Screen readers read this text aloud to the user. For more information, see Create form fields. For information on setting the tab order to use document structure, see Set form field navigation. For more information, see Set the document language , Prevent security settings from interfering with screen readers , Add accessible links , and About bookmarks.
For more information, see Set the document language , Prevent security settings from interfering with screen readers , and About bookmarks. Improve the accessibility of PDFs by adding tags in Acrobat. With a tagged PDF, the logical structure tree sends the contents to a screen reader or other assistive software or hardware in an appropriate order.
For best results, tag a document when converting it to PDF from an authoring application. Tagging during conversion enables the authoring application to draw from the paragraph styles or other structural information of the source document to produce a logical structure tree.
The logical structure tree reflects an accurate reading order and appropriate levels of tags. This tagging can more readily interpret the structure of complex layouts, such as embedded sidebars, closely spaced columns, irregular text alignment, and tables.
Tagging during conversion can also properly tag the links, cross-references, bookmarks, and alternate text when available that are in the file. Acrobat analyzes the content of the PDF to interpret the individual page elements, their hierarchical structure, and the intended reading order of each page. Then, it builds a tag tree that reflects that information. It also creates tags for any links, cross-references, and bookmarks that you added to the document in Acrobat.
The Add Tags To Document command adequately tags most standard layouts. However, it cannot always correctly interpret the structure and reading order of complex page elements.
Tagging these pages by using the Add Tags To Document command can result in improperly combined elements or out-of-sequence tags. These issues cause reading order problems in the PDF. You can add a watermark to a tagged PDF without adding it to the tag tree.
Once you have a tagged PDF, evaluate the document for reading order problems, tagging errors, and accessibility errors, and then repair them as needed.
Whichever method you use to tag the PDF, use Acrobat to touch up the tagging and reading order for complex page layouts or unusual page elements. It may incorrectly tag all of these elements as figures. Similarly, this command may erroneously tag graphical characters within text , such as drop caps, as figures instead of including them in the tag that represents the text block.
Such errors can clutter the tag tree and complicate the reading order that assistive technology relies on. If you tag a document from within Acrobat, the application generates an error report after it completes the tagging process. Use this report as a guide to repair tagging problems.
For example, if the web page relies on tables for its layout design, the HTML code for the table may not flow in the same logical reading order as a tagged PDF would require, even though the HTML code is sufficiently structured to display all the elements correctly in a browser. Depending on the complexity of the web page, you can do extensive repairs in Acrobat Pro by using the Reading Order tool or editing the tag tree in Acrobat. For more information, see the guidelines on the W3C website.
Creating tags in the authoring application generally provides better results than adding tags in Acrobat. For more information about creating accessible PDFs, see www. You can combine multiple files from different applications in one operation to create a single PDF.
For example, you can combine word-processing files with slide presentations, spreadsheets, and web pages. If you start with a mix of tagged and untagged PDFs, tag the untagged files before proceeding. When you insert, replace, or delete pages, Acrobat accepts existing tags into the tag tree of the consolidated PDF in the following manner:. When you insert pages into a PDF, Acrobat adds the tags if any for the new pages to the end of the tag tree.
This order occurs even if you insert the new pages at the beginning or the middle of the document. When you replace pages in a PDF, Acrobat adds the tags if any from the incoming pages to the end of the tag tree.
This order occurs even if you replace pages at the beginning or the middle of the document. Acrobat retains the tags if any for the replaced pages. Pages whose tags are out of order in the logical structure tree can cause problems for screen readers.
Screen readers read tags in sequence down the tree, and possibly do not reach the tags for an inserted page until the end of the tree. To fix this problem, use Acrobat Pro to rearrange the tag tree. Place large groups of tags in the same reading order as the pages themselves. To avoid this step, plan on inserting pages to the end of a PDF, building the document from front to back in sequence.
This approach places the tags for the content after the tags for the title page. Essentially, they are large pieces of empty tag tree sections. These redundant tags increase the file size of the document, slow down screen readers, and can cause screen readers to give confusing results.
For best results, make tagging the last step in the conversion process. Use Acrobat Pro to delete the tags of deleted pages from the tag tree. For more information, see Create merged PDFs. Acrobat Pro, Acrobat Standard. Use one of these applications to open untagged or tagged PDF forms except PDF forms that are created from Adobe Designer to add fillable form fields, such as text boxes, check boxes, and buttons. Add descriptions to form fields, tag untagged forms, set the set tab order, manipulate tags, and perform the other PDF accessibility tasks.
Authoring applications. Use the forms tools in Acrobat Pro to add fillable form fields. Moreover, if you tag the form during conversion to PDF, the authoring application can generate inappropriate tags for the text labels of the form fields.
In a complex form, for example, the text labels for all the fields can run together into a single line. Such reading order problems can require time-consuming work in Acrobat Pro to split the labels apart.
In this case, producing an untagged PDF form from the authoring application is sometimes the better course. You can then use the Forms tools in Acrobat Pro to add fillable form fields before you tag the entire document. Some forms are straightforward enough that you can produce a tagged PDF from the authoring application.
Then perform light touch-up in Acrobat Pro after you add the fillable form fields. Forms tend to have relatively complex layouts compared to documents that have a simple, single-column structure. The success that an application has in analyzing and tagging a form depends largely on the original formatting and layout of a document, and the types of fields that it uses.
When you design a form, include headings, instructions, and fields in which users are to enter data. At a minimum, give each field a label. Also add special instructions for fields that need them. Use graphics tools to draw lines and boxes. Adding descriptions to form fields enables screen readers to identify the fields to users. Users hear the description read aloud when they tab to the field. Write descriptions that are terse but complete.
Creating accessible PDFs Search. Go to Adobe Acrobat User Guide. Workflow for creating accessible PDFs. At a high level, the process of creating accessible PDFs consists of a few basic stages:. Consider accessibility before you convert a document to PDF. As needed, add fillable form fields and descriptions, and set the tab order. Add other accessibility features to the PDF. Tag the PDF. Evaluate the PDF and repair tagging problems.
Additional resources. For more information about creating accessible PDFs, see these resources:. Add fillable form fields and descriptions, and set the tab order. You can also use the Reading Order tool in Acrobat Pro to add descriptions to form fields.
PDF Accessibility | Distance Education
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