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Text Annotations ​

Text annotations on the viewer canvas

Text annotations add typed labels, notes, and callouts directly on the viewer canvas. They are useful for labeling specific areas, adding review comments, and providing context that freehand drawing cannot convey.

Using the Text Tool ​

Press T to select the text tool while in the Annotate tab (key 5). Click on the canvas at the desired position to place a text annotation. A text input field appears where text can be typed.

Formatting Options ​

Text annotations support several formatting options:

FormatDescription
BoldHeavier font weight for emphasis
ItalicSlanted text for secondary information
UnderlineUnderlined text for highlighting

Apply formatting before or during text entry using the formatting controls in the toolbar.

Background and Callouts ​

Text annotations can include a background color behind the text for improved readability. This is particularly useful when the text overlaps with complex or detailed image content.

Callout-style annotations combine a background panel with the text, creating a visually distinct label that stands out against any image.

Positioning ​

After placing a text annotation, it remains at the specified position on the canvas. The position is stored in image coordinates, so the text stays aligned with the image content even when panning or zooming.

Color ​

Text color follows the active stroke color selected in the toolbar. Choose from the preset colors or the full color picker before placing the text annotation.

Per-Frame Storage ​

Text annotations are stored per frame, just like pen strokes and shapes. Each frame can have its own set of text labels. Navigate between frames to see different annotations.

Undo and Redo ​

Adding a text annotation is a single undo step. Press Ctrl+Z to remove the most recently placed text. Press Ctrl+Y to restore it.

Released under the MIT License.

Copyright 2024-present Alex Kanunnikov