How to Use Drawing Tools on PDFs in Helperbird

Learn how to draw on PDFs with Helperbird's pen, shape, arrow, and line tools. A step-by-step guide to marking up any PDF document.

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  • features

What are PDF Drawing Tools?

PDF Drawing Tools let you draw directly on any PDF document in Helperbird's PDF Reader. You can use a freehand pen, draw rectangles, ovals, straight lines, and arrows. You can choose from multiple colors, adjust the line thickness, and move or delete individual drawings.

Your drawings stay visible even when you close the drawing toolbar, and you can download the PDF with all your drawings included.

A PDF page with several drawings including arrows, rectangles, and freehand marks


Who is This For?

This feature is helpful for:

  • Students who want to circle, underline, or annotate study materials
  • Teachers providing visual feedback on assignments
  • Researchers marking up papers and highlighting key data
  • Professionals reviewing documents, designs, or reports
  • Anyone who prefers visual annotation over typed notes

Step 1: Open a PDF in Helperbird

When you view any PDF in your browser, look for the green button that says "Open PDF in Helperbird – Click to Open" at the bottom of the page.

Click this button. The PDF will open in Helperbird's PDF Reader with a clean interface and navigation tools at the top.

The green banner at the bottom of a browser PDF showing the Open PDF in Helperbird button


Step 2: Open the Drawing Toolbar

In the toolbar at the top of the PDF Reader, click the Draw button (the pencil icon).

A drawing toolbar will appear below the main toolbar. This bar contains all your drawing tools, color options, and stroke controls.

The PDF Reader with the drawing toolbar open below the main toolbar, showing tool icons, color swatches, and stroke width controls


Step 3: Choose a Tool

The drawing toolbar gives you six tools to work with:

  • Select - Click on existing drawings to select, move, or delete them
  • Pen - Draw freehand lines and shapes with your mouse or finger
  • Rectangle - Click and drag to draw a rectangle
  • Oval - Click and drag to draw an oval or circle
  • Line - Click and drag to draw a straight line
  • Arrow - Click and drag to draw a line with an arrowhead at the end

Close-up of the drawing tool icons showing Select, Pen, Rectangle, Oval, Line, and Arrow

Click on a tool to activate it. The active tool is highlighted so you can always see which one is selected.


Step 4: Pick a Color and Stroke Width

Colors: Choose from nine colors in the toolbar: red, orange, yellow, green, blue, purple, pink, black, and white. Click a color swatch to select it. The active color has a visible ring around it.

The color swatches in the drawing toolbar with one color selected and highlighted

Stroke width: Click the stroke width button to cycle through four sizes: thin (2px), medium (4px), thick (6px), and extra-thick (8px). The button shows the current width so you always know what you're working with.


Step 5: Draw on the PDF

With your tool and color selected, click and drag on the PDF page to draw.

  • For the pen tool, hold down the mouse button and move to draw freehand.
  • For shapes, lines, and arrows, click where you want to start, drag to set the size and direction, then release.

Your drawing appears immediately on the page.

A PDF page showing a rectangle and an arrow drawn in red over the document content


Step 6: Select, Move, and Delete Drawings

Switch to the Select tool to interact with existing drawings.

To select: Click on any drawing. A dashed blue outline will appear around it, and a small red delete button will show at the corner.

To move: Click and drag a selected drawing to reposition it anywhere on the page.

To delete: Click the red delete button on a selected drawing, or press the Delete or Backspace key on your keyboard.

A drawing selected on the PDF page with the dashed blue outline and red delete button visible


Step 7: Undo or Clear Drawings

Undo: Click the Undo button in the drawing toolbar to remove the last drawing you made on the current page.

Clear all: Click the Clear All button to remove every drawing on the current page. This cannot be undone, so use it carefully.

The drawing toolbar with the Undo and Clear All buttons highlighted


Step 8: Close the Toolbar

Click the Draw button again in the main toolbar to close the drawing toolbar.

Your drawings stay visible on the PDF. You can continue reading, navigating pages, or using other Helperbird features. Your marks remain exactly where you placed them.

To make changes, just open the drawing toolbar again.


Step 9: Download Your Marked-Up PDF

When you are finished, click the Download button (the download icon) in the toolbar.

A dialog will appear with two options. Choose With my changes to save the PDF with your drawings. Choosing Original only downloads the PDF without them.

Your PDF will be downloaded with all drawings and text annotations permanently embedded. The file works in any standard PDF reader.

The download options menu showing Original only and With my changes buttons


Keyboard Shortcuts

When the drawing canvas is focused, you can use these keyboard shortcuts:

  • Tab - Cycle through shapes on the current page to select them
  • Arrow keys - Move a selected shape by a small amount
  • Shift + Arrow keys - Move a selected shape by a larger amount
  • Delete / Backspace - Delete the selected shape
  • Escape - Deselect the current shape

Tips

  • Use arrows to point reviewers to specific issues in a document.
  • Use rectangles or ovals to frame sections that need attention.
  • Combine text boxes and drawings for detailed annotations. Add a text box next to an arrow for context.
  • Your drawings are saved per page, so each page keeps its own set of marks.
  • If you open drawing mode while a text box is being added, drawing mode will close automatically to avoid conflicts.


Video Tutorial


Need Additional Help?

If you have any questions or run into any issues, please contact the Helperbird support team. You can reach us at Helperbird support. We are happy to help you get the most out of Helperbird.

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