How to Remove Highlight in PDF on Windows, Mac & Web

Quick Solution Overview

To remove a highlight in PDF immediately:

1. Online (Batch / Automated): Upload your document to an online PDF annotation remover like LightPDF, choose whether to remove all annotations or specifically select “Highlight”, and click Delete.
2. Desktop Readers (Adobe Acrobat, Mac Preview, Chrome/Edge): Click on the highlighted text and press Delete, or right-click and select Delete.
3. Flattened / Scanned PDFs: Use an OCR PDF editor or whiteout/redaction tool to unhighlight on PDF documents where background color markup has been merged into the image layer.

Method 1: Remove PDF Highlight via Online PDF Annotation Remover

When working with large study guides, ebooks, or legal filings, removing hundreds of highlights manually one by one is extremely tedious. Utilizing a dedicated online PDF annotation remover such as LightPDF provides the fastest way to bulk process your document and completely remove PDF highlight elements in seconds without installing extra software.

Supported Annotation Types: LightPDF’s automated tool lets you remove highlights alongside other elements including strikeout, underline, squiggly, ink/draw, polygon, square, circle, line/arrow, polyline, text, free text, insert caret/replace caret, stamp, popup/comment.

Step-by-Step Guide:

1. Visit Online PDF Annotation Remover: Navigate to the online PDF annotation remover tool on LightPDF using your web browser.
2. Upload Your Files: Click Select Files to upload your document. If you have several files needing cleanup, click Add Files to batch process multiple PDF files simultaneously.
3. Select Your Cleanup Preference:
   • Remove all annotations: Instantly wipes all markup, notes, shapes, and colored highlights.
   • Remove selected annotations: Customize your cleanup by selecting specific markup types. To specifically unhighlight on PDF, check Highlight (or multi-select additional items like underline, strikeout, stamp, or ink/draw).
4. Process Document: Click Delete. The pdf highlight remover engine will process the file clean without affecting underlying text formatting.
5. Download Output: Click Download to save your newly cleaned PDF file.

Method 2: How to Delete Highlights in PDF Desktop Readers

1. Adobe Acrobat Reader (Windows & Mac)

If the highlight was added as a standard editable annotation, follow these steps to delete highlights in PDF:

1. Open your document in Adobe Acrobat Reader.
2. Open the left sidebar and click on the Comments icon to view all markup entries.
3. Select the highlight entry in the Comments panel (or click directly on the highlighted text in the document viewer).
4. Press the Delete key on your keyboard, or right-click the highlight and select Delete.
5. Save your file (Ctrl + S or Cmd + S).

2. Apple Preview (macOS)

To unhighlight on PDF using native macOS tools without buying third-party software:

1. Open the PDF file in Preview.
2. Choose View > Highlights & Notes from the top menu bar to locate highlighted text segments.
3. Click directly on the highlighted block of text.
4. Press Delete or click Tools > Annotate > Highlight Color > None.

Method 3: How to Remove Highlight on PDF via Web Browsers (Chrome, Edge, Safari)

Modern web browsers allow basic PDF viewing and editing:

1. Open the PDF in Google Chrome or Microsoft Edge.
2. Click on the highlighted text area.
3. A small annotation menu will appear above the text. Click the Trash Can / Delete icon, or change the color palette setting to “No Color”.
4. Save the updated PDF by clicking the Download icon and selecting With your changes.

Method 4: How to Delete Highlights in Flattened or Scanned PDFs

A frequent complaint on Reddit (r/pdf), Quora, and MacRumors involves files where right-click delete fails. This happens when the highlight is flattened (merged into the document’s content layer) or when the PDF is a scanned physical paper document.

Solutions for Flattened Highlights:

• OCR Text Extraction: Run an OCR tool (like LightPDF OCR) to regenerate editable text layers, then strip background color blocks.
• Whiteout / Redaction Tool: Use a PDF Redaction tool or apply a white rectangle overlay over the highlighted background area if the page background is solid white.
• Image Editing / Raster Processing: Convert the page to an image format (PNG/JPEG), adjust color curves to filter out the specific highlight color hue (e.g., light yellow tint), and save back to PDF.

Comparison of PDF Highlight Removal Methods

FAQ

Q1: Why can’t I remove or click a highlight in my PDF document?

This typically occurs due to three reasons:

1. Flattened Annotations: The file was saved using “Print to PDF” or flattened, turning annotations into static background graphics.
2. Permission Restrictions: The PDF creator locked the document with password permissions, disabling annotation modification. You must unlock the PDF permissions first.
3. Scanned Hardcopy: The document is a digital scan of a physically highlighted paper page. You will need to use OCR or image color filtering to clean it.

Q2: How do I remove highlights from a PDF on a Mac without Adobe?

You can use the built-in Preview app. Open your PDF, click View > Highlights & Notes, select the highlight from the sidebar list, and press the Delete key. Alternatively, upload your file to an online PDF annotation remover like LightPDF directly via Safari.

Q3: Can I delete highlights without removing underlying text or other comments?

Yes. When using a specialized pdf highlight remover like LightPDF, select Remove selected annotations and check only the Highlight box. This leaves all your text notes, stamps, squiggly underlines, and carets completely intact while selectively stripping out background color highlights.

Q4: Is it secure to use an online PDF annotation remover for confidential documents?

Reputable platforms like LightPDF utilize SSL/TLS encrypted connections for file transfers and enforce strict privacy protocols that automatically purge uploaded files from servers shortly after processing, ensuring your confidential documents remain private.

Q5: How do I unhighlight on PDF on mobile devices (iOS / Android)?

On iOS or Android, open your document using mobile Adobe Acrobat or your default file manager’s PDF viewer. Tap directly on the highlighted passage to bring up the context menu, then tap the Trash / Remove icon. You can also access LightPDF’s online tool via your mobile web browser without installing additional apps.