Easy Underlining
Underline important text in just a few clicks.
Underline Text in PDF with iMZi PDF
Underline important words, sentences, and paragraphs in your PDF for reviewing, studying, or collaboration.
Emphasize Important Text in PDFs
Underline key information without modifying the original document.
Whether you are reviewing contracts, studying notes, proofreading reports, or collaborating with teammates, underlining helps emphasize important content.
With iMZi PDF, you can underline text directly in your browser and download the updated PDF while preserving its original formatting.
How to Underline Text in a PDF
Underline text in three easy steps.
1. Upload Your PDF
Choose the PDF document you want to annotate.
2. Underline the Text
Select important text and apply an underline annotation.
3. Download Your PDF
Save and download your updated PDF.
Why Choose iMZi PDF
A fast and secure way to underline text in PDF documents.
Perfect for Reviews
Great for studying, proofreading, and document review.
100% Private & Secure
Files are processed locally in your browser.
Works on Any Device
Use iMZi PDF on desktop, tablet, or mobile.
Underline PDFs Without Extra Software
Use iMZi PDF to underline important text in reports, contracts, books, research papers, and other PDF documents directly from your browser.
Popular Underlining Tasks
People use iMZi PDF to underline important information in PDFs for work, education, and personal use.
Study notes
Contracts
Research
Reports
Proofreading
Reviews
Frequently Asked Questions
Find answers to common questions about this tool.
Ready to Underline Your PDF?
Use iMZi PDF to underline important text quickly and securely.