FilePDQ

Highlight and underlineFREE

Highlight or underline parts of a PDF page in four colours.

Drop a PDF to highlight

PDF. Up to 200 MB.

Stays on your device

Questions about Highlight and underline

Is Highlight and underline free?

Yes. It is free to use, with no sign-up, no watermark and no limit on how often.

Are my files uploaded?

No. It runs in your browser, so your files stay on your device and are never sent to us or anyone else. Privacy notice

Which files can I use?

PDF in, PDF out. Up to 200 MB per file, 50 files at a time, 2,000 pages.

Step by step, and if something goes wrong

Steps

  1. Add a PDF and choose Highlight or Underline and a colour.
  2. Drag across the part of the page you want to mark.
  3. Select Download PDF.

If something goes wrong

  • Highlights are see-through, so the text underneath stays readable.
  • Keyboard users can use “Add a mark to this page”, then the arrow keys to move it and Alt with the arrow keys to resize it.
  • Marks become part of the page, like ink. They are not editable PDF comments.