An alt text (short for alternative text) describes a non-text element, like an image or a graphic. The invisible text can be read and displayed by software, especially AT. In this post we’re looking how to add such alt texts in Microsoft Word, Adobe InDesign and Adobe Acrobat.Continue reading "Add an alt text"
PDF tags are not only needed to give content a semantic meaning, but also to determine the logical reading order. In Acrobat, the order of the tags within the tag tree can be modified.Continue reading "Adjust logical reading order in Acrobat"
The semantics and the logical reading order can be checked in Adobe Acrobat using the tag tree. However, this might not be very comfortable and clear, which is why further possibilities are shown here.Continue reading "Check semantics and logical reading order"
The complete tagging of a PDF in Acrobat is only recommended if the authoring software does not allow PDF export with tags (Tagged PDF) or if the source document is not available. More below you will learn how to add or adjust single tags in Acrobat.Continue reading "Create and modify PDF tags in Acrobat"
PDF tags are not only needed to give content a semantic meaning, but also to determine the logical reading order. In InDesign, the order of the tags can be defined so that the logical reading order is already correct for the generated PDF.Continue reading "Defining logical reading order in InDesign"
In InDesign you can define heading tags manually through the paragraph style settings. For tables, lists and footnotes you’ll automatically get the appropriate tags if you use the available tools correctly.Continue reading "Defining PDF tags in InDesign"
One of the key structure elements are nested multi-level headings. Such structuring work can be achieved by consistently using paragraph styles in Word.Continue reading "Defining PDF tags in Word"
A PDF converted from Word contains the <Part> element as its top container. However, the semantically more suitable <Document> tag should be used as root element.Continue reading "
Documentisn’t the top-level tag"
In the document properties of the PDF you can define whether the document is displayed with the file name or the document title. This appears in the window title bar of Acrobat (Reader) as well as AT uses this kind of information.Continue reading "Document title isn’t set"
In PDFs exported from Word, the Bounding Box attributes of all existing images are missing, regardless of the layout option they were placed with.Continue reading "
Figurewithout Bounding Box"
Working with the so-called tag tree, which is shown in the navigation pane “Tags”, can be a bit confusing, especially at the beginning. To counteract this, some techniques are explained in this article.Continue reading "General working with PDF tags in Acrobat"
A table of contents is created with the tags <TOC> and <TOCI>. <TOC> is the container and <TOCI> is used for each entry. In this error scenario, all or some of the <TOC> entries are tagged with a headline tag, e.g. <H1>, instead of <TOCI>.Continue reading "Heading tags instead of
Images in Word are always be at block level in exported PDFs. The <Figure> tag does not have any additional attributes that identify it as a block element.Continue reading "Image as block element"
If an undefined or ordered list is used it needs to be tagged as list as well. The list tags will be automatically generated while exporting as PDF. However, you have to use the correct list tools in Microsoft Word or Adobe InDesign.Continue reading "List is not tagged as list"
An image is placed with the “In Line with Text” layout option into Word in “Compatibility Mode” (.doc file). After exporting as PDF the image won’t be within aContinue reading "No
Figuretag in compatibility mode"
This overview shows the most important tags from the PDF 1.7 standard. The reference helps you to choose the correct and semantic tags.Continue reading "Overview of the PDF tags"
In order for a PDF document to be technically accessible, the PDF/UA identifier (metadata) must be set.Continue reading "PDF/UA identifier is missing"
To ensure that the structure made with headings can always be understood, the heading levels mustn’t be skipped. This means <H1> mustn’t be followed directly by <H3>. However, after a <H3> another <H1> can follow, because a new chapter begins for example.Continue reading "Skipped heading levels"
One of the main tools for structuring documents is the use of headings. On a visual level, headlines are usually marked with larger font sizes or bolder font styles.Continue reading "Structure with the help of multi-level headings"
Everything you put into the header or footer of a Word document, is going to be an Artifact and not tagged. Therefore, images with content value mustn’t be placed in it. Images within the header or footer of a .docx (Word 2013 document without compatibility mode) are incorrectly tagged if they are used with the “Behind Text” layout option.Continue reading "Tagged image in header or footer"
When exporting a table from Word 2013, the lines of a table are set within <Span> tags. <Span> tags are not allowed inside a <TR> (table row) on the same level as the <TD> tags (table cell). In addition, table lines must be marked as artifacts and must not be tagged.Continue reading "Tagged table lines"
Users who need to use AT are not only dependent on semantically correct tags. It is also important to exclude decorative and irrelevant objects from the output. You can achieve this by marking such elements as artifacts.Continue reading "Unimportant and decorative objects as artifact"