How to Strikethrough in PDF Files

Learning how to strikethrough text in PDF files is a fundamental necessity for efficient document collaboration and revision, enabling users to mark content for deletion or suggest corrections without permanently altering the source text. 

PDF files are primarily designed for fixed document presentation, making permanent editing inherently challenging. Consequently, modern PDF viewers and editors rely on robust annotation tools like the strikethrough function, which is critical for reviewers working on legal contracts, academic papers, or technical manuals, allowing them to clearly communicate changes to collaborators.

Understanding Strikethrough in PDFs

The strikethrough feature is a vital annotation tool in PDF files used to visually signal text that should be removed or disregarded, allowing stakeholders to track revisions clearly while the original content remains visible for context. 

This function draws a simple horizontal line through selected words. Its significance lies in its non-destructive nature: it signals a proposed correction rather than immediately deleting the text. This feature is crucial in professional environments—such as legal or technical review—where preserving a complete audit trail of the original content is mandatory, ensuring the intent of the change is transparent.

Tools for Strikethrough in PDFs

While online editors are convenient, the industry standard for applying complex annotations remains desktop software such as Adobe Acrobat, which provides highly granular control over the strikethrough markup.

• Adobe Acrobat Pro: The premium solution, featuring the strikethrough tool under the "Comment" panel. Acrobat allows users to customize the line's color, thickness, and opacity, and easily add an explanatory note to the annotation.

• Foxit PDF Reader/Editor: A strong alternative to Adobe, with the strikethrough function located in the "Comment" or "Annotate" tabs, offering a robust set of markup features.

• Mac Preview: A simple, built-in option for Mac users. The tool is accessed via the Markup icon (toolbox) and provides quick strikethrough functionality for basic revisions. It is also a handy tool if you need to quickly create a pdf from another document type.

• Google Docs/Drive: If a PDF is opened and converted into a Google Doc, users can utilize the native strikethrough function before exporting the file back to PDF, making it possible to type on a pdf and apply the necessary markups indirectly.

Scanning Strikethrough Text to PDF

Strikethroughs applied manually with a pen on paper are treated as graphic marks when scanned into a PDF, meaning they exist only as part of the image layer and cannot be digitally manipulated or removed using standard PDF annotation tools. 

This is because the scanned mark lacks the digital metadata that defines a true annotation.

To manage this issue effectively, the most reliable method is to skip the manual markup entirely and apply the strikethrough digitally post-scan.

Best Practices for Scanned Documents:

1. Scan a Clean Original: Scan the document without any manual marks to ensure the text layer is clear.

2. Apply Digital Annotation: Use your PDF editor (like Acrobat or DocFly) to manually apply a digital strikethrough over the relevant text. This creates a proper, editable annotation layer.

3. Use OCR: Utilize Optical Character Recognition (OCR) during scanning to ensure the software recognizes the underlying text, even if it cannot recognize the manual strikethrough itself.

4. Use Comment Tool: If full collaborative markup isn't needed, simply use the Comment/Note tool next to the text to indicate that the section was struck out on the hard copy original.

Troubleshooting Common Strikethrough Issues in PDFs

Most common issues with strikethroughs—such as the mark not displaying or an inability to remove it—stem from software version problems or confusion between editable annotations and permanent scanned marks. 

Addressing these issues usually requires checking the viewer settings or confirming the source of the mark.

Conclusion

The strikethrough annotation is a deceptively simple yet critical feature for effective document workflow. Mastering its application and management across various software—from basic readers to comprehensive editors—ensures clear, professional communication of revisions. By treating digital annotations correctly, you maintain both efficiency and the integrity of your professional documents.