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Getting Started

1. Install the extension from the Chrome Web Store or load it unpacked via chrome://extensions
2. Click the Annotate icon in your toolbar on any page
3. Start drawing — the overlay appears with a crosshair cursor

Tools

Key	Tool
D	Freehand draw
A	Arrow
L	Line
S	Square / Rectangle
C	Circle / Ellipse
H	Highlight (semi-transparent fill)
B	Blur / Redact (solid black box)
F	Text
N	Number callout (auto-incrementing ①②③…)

Colors

Key	Color
1	Red
2	Blue
3	Green
4	Yellow
5	Light Grey
6	Dark Grey

Your last-used color and line width are remembered between sessions.

Other Shortcuts

Key	Action
R E	Increase / decrease line width (or font size in text mode)
Cmd/Ctrl+Z	Undo
Cmd/Ctrl+Y	Redo
Cmd/Ctrl+A	Select all annotations — then press Delete to clear
Esc	Exit — prompts to save screenshot

Click the floating indicator icon to see all shortcuts at any time.

Text Tool

• Press F to switch to text mode
• Press R / E to adjust font size before clicking
• Click anywhere to place a text box — the cursor appears at your click point
• Type your annotation — E and R type normally inside the box
• Press Enter to confirm, Escape to cancel
• Press Shift+Enter for a new line
• Click outside the text box to confirm

Saving Your Work

1. Press Esc to open the exit dialog
2. Click Yes — the annotated screenshot is copied to your clipboard and downloaded as a PNG
3. Click No to close without saving

FAQ

The overlay doesn't appear when I click the icon.

Make sure you're not on a restricted page (chrome:// pages, the Chrome Web Store, or other extension pages). Chrome extensions cannot inject scripts into these pages.

Can I scroll the page while annotating?

Yes — scroll wheel events are automatically passed through to the underlying page while the overlay is active.

Where are my screenshots saved?

Screenshots are saved to your default downloads folder with the filename annotate-YYYYMMDD-HHmmss.png and also copied to your clipboard.

Does it work during screen sharing?

Yes — the annotation overlay is rendered as part of the page, so it's visible to anyone watching your screen share or browser tab share.