Underline important text in any PDF document. No sign-up required.
Select any text and add an underline to emphasize it.
Pick from multiple underline colors for different purposes.
Works with any PDF document — contracts, reports, textbooks, and more.
Your PDF is processed in your browser. Nothing is uploaded to any server.
Windows, Mac, Linux, Chromebook — any device with a browser.
Start underlining immediately. No account, no email required.
Select a PDF file or drag it into the editor.
Click the underline tool, then select the text you want to underline.
Click Download to save your PDF with underlined text.
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