How to Draw a Line in Adobe Acrobat

Updated on:

May 12, 2026

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Use this interactive demo to learn how to freehand draw a line directly on a PDF in Adobe Acrobat.

Quick summary

Adobe Acrobat's Draw Freehand tool lets you draw lines directly on a PDF using your mouse, with full control over pen color. This feature is ideal for annotating documents, marking up feedback, or adding visual emphasis without leaving Acrobat.

Steps

Navigate to the left-side floating menu and click the Draw Freehand icon to activate the drawing tool.
Tap the color picker button and select your preferred pen color for the line.
Move to the PDF page and draw a line using your mouse cursor.
Once complete, the drawn line is saved and added to your PDF file.

📌 Why this matters

Drawing lines directly on a PDF in Adobe Acrobat is a fast, built-in way to annotate documents without needing third-party markup tools. The freehand drawing feature lets reviewers, editors, and collaborators highlight sections, underline content, or add visual notes directly on the page. Being able to customize the pen color ensures annotations are clear and easy to distinguish in multi-reviewer workflows. This capability makes Adobe Acrobat a complete PDF editing and annotation solution for individuals and teams alike.

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