> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tessact.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Canvas settings

> Edit output dimensions and read the composition's timing contract.

Canvas settings apply to the entire draft. Open **Canvas settings** from the right rail to inspect output dimensions, frame rate, and duration.

<Frame caption="Canvas settings for a video composition">
  <img src="https://mintcdn.com/tessact/vfxW-9CCvO3MqPNT/images/editor/screenshots/editor-canvas-settings.png?fit=max&auto=format&n=vfxW-9CCvO3MqPNT&q=85&s=f3c727d528f39140977101ff9242e6c7" alt="Tessact Canvas settings inspector showing composition dimensions, frame rate, and duration" width="1440" height="900" data-path="images/editor/screenshots/editor-canvas-settings.png" />
</Frame>

## Dimensions

**W** and **H** define the encoded frame in pixels. Values use even-number stepping because common video encoding paths handle even dimensions predictably. The swap action exchanges width and height, making a fast landscape-to-portrait or portrait-to-landscape starting point.

<Warning>
  Swapping or changing dimensions does not automatically redesign every layer. Review crop, alignment, frame containers, text wrapping, captions, and off-canvas animation after any aspect-ratio change.
</Warning>

## Timing

The panel displays the draft's frames per second and formatted duration. Frame rate is a read-only project timing contract in the current interface. Duration is derived from composition state rather than edited as an independent field here.

## Coordinate impact

Changing dimensions changes the coordinate space against which top-level layers align. Existing absolute positions remain numeric values; a former visual center may no longer be centered. Parent-managed layouts remain internally coherent but their top-level frame may still need repositioning or resizing.

## Output impact

Composition dimensions and frame rate flow into playback evaluation and H.264 rendering. Canvas view zoom, browser window size, and panel geometry do not. For a render estimate or downstream delivery requirement, use composition pixels and duration—not the screenshot size of the editor.

See [frame math](/editor/reference/timecode-frame-math), [H.264 rendering](/editor/export/h264), and [frames](/editor/canvas/frames).