Underlining in PDF on Firefox
About us
English
Underlining in PDF on Firefox
Effortlessly underline PDFs in the Firefox browser - free and easy!
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.
Trusted by Millions Worldwide
4.4
2,100+ reviews on G2
4.4
8,200+ reviews on Capterra
4.4
73,000+ reviews on App Store
248M
Registered Users
5B
Notes Created
2M
Notes Created Daily
Frequently Asked Questions
Use the highlight tool in the PDF editor to emphasize text. This feature allows highlighting but not direct underlining.
Yes, you can annotate PDFs directly in Firefox using a web-based tool, simplifying document editing without additional software.
No, existing text cannot be edited. The tool is meant for adding annotations like underlines, notes, and highlights.
Although direct underlining isn't supported, you can use the highlight tool on the text you wish to emphasize in your PDF.
Yes, after annotating, you can download the PDF with all added notes, highlights, and markings.
Yes, underlining and annotating PDFs is free in Firefox. Registering unlocks additional features like downloading annotated files.
Ensure you're using the highlight tool correctly. If issues persist, try reloading the tool or checking for Firefox updates.
Yes, this tool is compatible with Firefox on Windows as well as other operating systems with modern browsers.
Yes, you can undo or delete annotations before finalizing and downloading the document in the tool.
Yes, multi-page PDFs are supported. Navigate through pages and annotate them as needed with the provided tools.
The maximum file size per PDF is 100 MB, allowing you to annotate large documents within the tool's capabilities.
No installation required. The tool operates directly in your Firefox browser, offering seamless access to PDF annotations.
No, the tool processes one file per session. Complete your annotations, download the file, and start anew for additional PDFs.
While optimized for Firefox, it also works in other modern browsers, but performance is best with Firefox.
No, real-time collaboration features aren't available. Annotations are added individually and can be shared externally if needed.