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PDF documents are a common fixture in both academic and professional settings, but they are often inaccessible scans of physical documents. These documents often contain artifacts from the original scan that can impede the readability of the document for all especially those using screen readers. The resources on this page consist of a video tutorial and text instructions outlining the process of using Adobe Acrobat DC to remediate PDFs.

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Recognize text

1. Open听a PDF document in听Adobe Acrobat.
2. Perform Optical Character Recognition (OCR) on the document.
   1. When opening the document, Acrobat might display a pop-up bar at the top of the document stating “A scanned document has been identified, Scan & OCR tool can turn scans or images into editable PDFs.” Select the Get Started button.
   2. If the pop-up bar is not present, select All Tools on the top menu bar, then select Scan & OCR.
3. The Scan & OCR pane will open. Under Recognize Text, select In this file. Select the relevant pages and the document language, then select the Recognize text button.
4. The OCR process takes some time depending on clarity of scan and length of document.

Crop pages if needed

If the scans contain extraneous and distracting elements like black space or partial adjoining pages, the scan should be cropped to the relevant page. For tutorial with images, visit the Adobe help page on .

1. Select All tools, then select Edit a PDF.
2. In Modify page, select the Crop page button (icon is a page with a crop square in the lower right).
3. Use the cursor to drag a rectangle around the page. Drag the corner handles to modify if needed.
4. Double-click inside the rectangle to open the Set Page Boxes window. If the black rectangle on the preview screen is correct, select OK.

Make corrections

1. Open the Scan & OCR pane again from All tools. Select Correct recognized text.
2. In the new pop-up, select the Review recognized text box. Acrobat will display the image and what it thinks the text should be. Review and make corrections as needed. If the element pictured is a decorative picture or an error, input the text as a space.

Create tags

1. Select All tools, then听select Prepare for accessibility.
2. Select Automatically tag PDF. Acrobat will do its best to recognize headings, paragraphs, lists, and tables, however manual checking and correction of tags is basically always needed.
3. To view the tags, on the right-hand toolbar, right-click/alt-click and select Accessibility tags. If the Accessibility tags pane doesn’t open automatically, select the icon (looks like a hanging tag) on the right-hand toolbar.
4. To change a tag type, 谤颈驳丑迟-肠濒颈肠办/补濒迟-肠濒颈肠办听the tag in the pane,听蝉别濒别肠迟听Properties.
5. In the Object Properties window, in the Tag tab, use the Type drop-down menu to select the correct tag type. 厂别濒别肠迟听Close to close the Object Properties window.

File properties, reading order, and more

1. Create听labels and titles to go with chapters and sections using the听Reading Order听in the听Accessibility Tool.
   1. Ensure the Reading Order is accurate.
2. Add a title to the PDF and set it to display in Acrobat.
   1. Select听File then听select听Properties.
   2. In the Description tab, type in a title for the PDF.
   3. In the听Initial View tab in the听Window Options section, the听Show drop-down menu can be set to听Document Title so that when the PDF is open in Acrobat, it displays the title instead of the file name.
3. Add Alt-text to URL links.
   1. If not already visible, open the听Accessibility Tags pane.
   2. Locate the听Link tag in the tag tree and then听right-click/alt-click on the听Link tag, then听蝉别濒别肠迟听Properties; this will open a new window.
   3. In the听Tag tab, enter replacement text in the听Alternate Text box. Screen readers will read this text instead of the URL.

Use the Acrobat Accessibility Checker

1. Select All tools, then select Prepare for accessibility, then select Check for accessibility.
2. Remember that this checker is no substitute for a thorough manual check, but it does check for alt-text for figures, file properties, and if headings are nested correctly without skipping levels.

Save as PDF/A.

1. Click听on the听File tab听and听hover听over听Save As
2. Select听Archivable PDF/A
3. Select听your destination.
4. Click听Save.

Now, a screen reader such as the Adobe Reader Read function, Read and Write, and JAWS can access your file. Don’t forget to set or adjust the reading order.

There is actually a lot more to PDF Remediation to ensure everything is read and interpreted correctly such as making sure headings, paragraphs, and lists are properly identified using PDF Accessibility Tags.

Generally, remediating PDFs consists of at least the following areas:

• Setting the document properties (step 7 above)
• Tag the PDF (headings, lists, tables, images, artifacts, etc)
• Ensure all images or graphics have alt-text (or possibly Long Descriptions appended)
• Ensure the reading order is correct throughout the entire document
• For long documents, create bookmarks
• For documents with links, ensure link tags have all tag elements (including Link-OBJR) and navigate to the correct place
• Ensure tables with structure and tags are correct

For more information on identifying, or “tagging,” the text in a PDF correctly, some external resources are listed below:

• 
  This starts off with defining what 鈥淧DF tags鈥� are and then has more tutorials on remediating. Specifically, the covers using the Reading Order Tool.
• – Help article by Adobe on creating accessible PDFs.