Highlight PDF
Highlight important parts of a PDF.
Mark important text and sections with highlighter color. Choose the color and which pages to highlight — applied locally in your browser.
How to use
01
Select a PDF
Choose the PDF you want to highlight.
02
Pick color and draw
Select a highlight color, then drag over the areas you want to mark on the page.
03
Apply
Click APPLY. Highlights are drawn into the pages.
04
Download
Download the highlighted PDF.
Features
Four highlighter colorsYellow, green, blue and pink.
Opacity controlAdjust how transparent the highlight appears.
Real PDF drawingHighlights are rendered into the page content with alpha blending.
LocalEverything runs in your browser.
Privacy & security
Highlighting happens locally in your browser. The document never leaves your device.
Limitations
- Highlights are drawn as translucent rectangles; text is not reflowed or wrapped.
- Very precise text-level highlighting requires an interactive PDF editor.
Frequently asked questions
Yes — drag with your finger or stylus on touch devices.
Highlights are drawn over the content; the text underneath stays selectable.
Only before applying — use the clear button. After applying, re-run from the original file.
Yes, free with no limits.