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Highlight PDF Online: Marker Tool with Neon Colors | QueenPDF

Tap to select a PDF

Select a marker color & drag over text to highlight
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100% Secure: On-Device processing.

Highlight Text in PDF Online

Whether you are reviewing study notes, emphasizing key clauses in a contract, or marking up a presentation, our QueenPDF Highlight Tool makes it effortless. Add vibrant, transparent neon marker highlights to your PDF documents directly from your browser without downloading any external software.

How to Highlight a PDF Document?

Follow these incredibly simple steps to annotate your files:

  1. Upload Document: Tap the upload box to load your PDF.
  2. Pick a Marker: Choose from our 5 premium neon highlighter colors (Yellow, Green, Pink, Blue, or Purple).
  3. Draw a Box: Click and drag (or use your finger on mobile) over the text you want to emphasize. The text will remain perfectly readable underneath!
  4. Download: Click the download button to instantly save your brilliantly highlighted document.

Premium Features

  • Perfect Transparency: Unlike other tools that make text hard to read, our highlights feature a perfectly balanced 25% opacity so your content remains crystal clear.
  • Multiple Neon Options: Color-code your notes easily by switching between vibrant marker shades on the fly.
  • Lag-Free Mobile Rendering: Experience smooth scrolling and drawing on any device, ensuring high productivity on the go.

100% Private & Secure

Security is our highest priority. The QueenPDF Highlighter uses advanced Client-Side Processing. This means your PDF never leaves your device and is never uploaded to any cloud server. Every highlight you draw and every file you save is processed locally within your browser, ensuring absolute data privacy.