Annotate PDF files text in a PDF, free, no upload
Reviewing contracts, textbooks, or research papers is faster when you can mark the key passages. You get a simple highlighter that saves annotations directly into the file.
Choose a color, drag across the text, and the highlight becomes part of the PDF. Unlike some online tools, the annotated file never leaves your computer, making the tool ideal for confidential reviews.
How it works
- 1
Open your PDF
Load the document you want to annotate directly in the browser.
- 2
Select and highlight
Drag to select text, then pick a highlight color to mark it.
- 3
Save your annotations
Download the PDF with highlights burned into the page.
Related features
- Edit PDF text · Edit PDF text without Adobe and keep the original font style when embedded fonts are available.
- Add images to PDFs · Drop logos, signatures, or photos onto any page and resize them until they fit perfectly.
See how it compares
Compare annotation privacy with FreeEditPDF vs iLovePDF.
Highlight your PDF now
Open the editor and start annotating in seconds.
Frequently asked questions
Can I highlight a PDF for free?
Yes. Highlight any PDF in your browser with no cost and no signup.
Can I also underline or strikethrough text?
Yes. The annotator supports highlight, underline, and strikethrough.
Are my highlights saved in the file?
Yes. Highlights are drawn into the exported PDF so they stay when you download it.
Do I need an account?
No. There is no account or login.