VMark: Hand-Drawn Annotations

Add emphasis to your presentations with animated hand-drawn marks

The Problem#

Static text in presentations lacks emphasis.

We want this to stand out.

VMark creates a “live drawing” effect that grabs attention and guides your audience’s focus.

Getting Started#

Import VMark from the presentation feature:

import { VMark } from "@features/presentation";

Basic usage wraps text in the component:

<VMark>text to emphasize</VMark>

The default is underline, and it animates on click.

Annotation Types: Underline & Circle#

Underline is the default. Use it for general emphasis.

Circle draws attention to key terms or important words.

<VMark type="underline">emphasis</VMark>
<VMark type="circle" color="red">key term</VMark>

Annotation Types: Box & Highlight#

Box frames content like code or definitions.

Highlight creates a marker effect. It uses 40% opacity so text stays readable.

<VMark type="box" color="green">boxed</VMark>
<VMark type="highlight" color="yellow">highlighted</VMark>

Annotation Types: Strike-through & Crossed-off#

Use these for corrections or showing what to avoid:

Common pattern: show the wrong approach, then reveal the correct one.

Annotation Type: Bracket#

The brackets prop controls direction:

<VMark type="bracket" brackets={['left', 'right']}>
 phrase
</VMark>

Options: left, right, top, bottom

Color Presets#

VMark includes 24 color presets:

red | blue | green | yellow | purple | orange

cyan | teal | pink | indigo | lime | amber

Custom CSS colors also work: #ff6b6b, rgb(100, 200, 150), rgba(255, 0, 0, 0.5)

Controlling Timing: Sequential#

By default, VMark annotations appear sequentially with each click.

This one appears second.

And this one third.

Just place VMark components in order. Each one advances the click counter.

Controlling Timing: Explicit#

Use at to specify an exact click number:

<VMark at={3}>appears on click 3</VMark>
<VMark at={1}>appears on click 1</VMark>

Advanced Timing: Relative & Ranges#

Relative positioning with +N:

Ranges show content only during a window:

<VMark at="+1">offset from previous</VMark>
<VMark at={[2, 5]}>visible during clicks 2-4</VMark>

Under the Hood#

VMark is built on the rough-notation library.

Key behaviors:

• Generates SVG annotations at runtime
• Respects prefers-reduced-motion (instant show, no animation)
• Works with print/export mode (?print=true)
• Annotations are visual only. Screen readers see just the text

Summary#

7 annotation types: underline, circle, box, highlight, strike-through, crossed-off, bracket

24 color presets plus custom CSS colors

Full click system integration with at prop for timing control

Press Escape to exit presentation mode.