About us
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Underline PDFs with Opera
Underline PDF text online with the Opera browser
or drag and drop a file
Supports PDF and image file formats (maximum 100MB)
By using the product, you agree to our Terms of Service and have read our Privacy Policy.
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Frequently Asked Questions
Upload your PDF and use the annotation tool to create an underline effect by selecting the underline style in color options.
Yes, open your PDF in Opera and use our browser-based tool to underline text. Upload the file and use the annotation options.
After underlining text, download the annotated PDF with embedded changes directly from Opera.
Yes, choose from multiple colors with our color picker before underlining text in your PDF.
Yes, our PDF annotation tool is compatible with Opera GX. Simply navigate to the tool in your Opera GX browser.
Underlining is applied individually to each line or section. Select text as needed and underline it.
No, our tool is not supported on mobile devices. Use it on a desktop or laptop with a browser like Opera.
You can underline text in files up to 100 MB. Ensure the PDF doesn't exceed this limit before uploading.
No, our tool works fully online within Opera. No additional software installation is required.
No, you can work on one PDF at a time. Complete and download it before starting a new document.
No, the tool does not support text extraction. It annotates over the existing text in the document.
There is no auto-save. Manually download the finished annotated PDF to your device.
Our tool includes text, pen, highlight, and shape tools, allowing versatile annotations beyond underlining.
No revision history or tracking is available. Each session is independent, beginning with a new document upload.
Yes, you can navigate and annotate all pages of a multi-page PDF. Use controls to switch between pages.