How to Highlight Text in a PDF Free Online
Highlight important sections of a PDF without installing software. Free, works in any browser, highlights saved permanently.
Highlighting PDF text marks important sections for review, study, or reference. FixMyPDF's annotation tool adds permanent highlights to any PDF for free.
How to Highlight PDF Text
Go to fixmypdf.in/tools/add-comments. Upload your PDF. Select the highlight tool. Click and drag over the text you want to highlight. Choose highlight colour. Repeat for additional sections. Download.
Highlight Colours and Meaning
Yellow: general importance or attention. Green: approved, positive notes. Pink/Red: issues, warnings, or critical items. Blue: informational references.
Highlights vs Annotations
A highlight marks text. An annotation (sticky note) adds a comment to a region. For review workflows, use both: highlight the relevant text, add an annotation note explaining the concern or comment.
Making Highlights Permanent
After highlighting, use the flatten tool if you want the highlights embedded as part of the page image — not as removable annotation objects. Flattened highlights cannot be removed by the recipient.
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