How to Add Shapes To PDF
Rectangles, circles, arrows, and lines are essential for marking up documents—drawing attention to specific sections, creating visual hierarchy, framing images, or diagramming relationships between elements. Unlike freehand drawing, shape tools produce clean, precise geometric objects with consistent line widths and angles. SublimePDF's shape tools let you add professional-looking geometric annotations to any PDF.
Follow the step-by-step instructions below, then use the free tool directly — no registration or download required.
Open Tool →How to Add Shapes To PDF — Step by Step
Upload your PDF
Open the Add Shapes tool and upload your document. The editor provides shape tools in the toolbar: rectangle, circle/ellipse, line, arrow, polygon, and star.
Select a shape type
Click the shape tool you need. For emphasizing content, rectangles and circles work well. For indicating direction or connection, use arrows. For labeling or callouts, use lines with text.
Draw the shape on the page
Click and drag on the page to create the shape. Hold Shift for perfect squares and circles. Resize by dragging corner handles, and reposition by dragging the center. Shapes snap to content edges for precise alignment.
Customize appearance
Set the stroke color, width, and style (solid, dashed, dotted). Choose a fill color and opacity—use no fill for outlines around content, or semi-transparent fills to create colored overlays that highlight regions.
Save the shaped PDF
Add as many shapes as needed across all pages. When finished, save to embed them in the PDF. Choose 'Flatten' if shapes should become permanent, or keep them as editable annotations.
Pro Tips
- 💡 Use red rectangles with no fill and 2px stroke to create clean 'review markup' boxes around sections that need attention.
- 💡 Semi-transparent yellow rectangles (20% opacity fill) work like a digital highlighter for multi-line or multi-column content that text highlighting can't cover.
- 💡 For callout annotations, combine an arrow pointing to the content with a rectangle containing your comment text.
- 💡 Group related shapes (right-click > Group) to move and resize them together, maintaining their relative layout.
Privacy & Security
All processing happens directly in your browser. Your files are never uploaded to any server — they remain on your device throughout the entire process. SublimePDF uses WebAssembly technology for fast, secure, client-side processing.
Works Everywhere
This tool works on any modern browser — Chrome, Firefox, Safari, or Edge — on desktop, tablet, or mobile. No software to install. PDF is an open ISO standard supported by all major platforms.
How to Add Shapes To PDF — FAQ
Can I add text inside shapes?
Are shapes added as annotations or permanent content?
Can I create precise shapes with exact dimensions?
Do shapes work in all PDF readers?
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