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

# Edit captions

> Review captions in context and understand which Studio edits are saved today.

Studio switches to caption editing when the open composition contains `.caption-group` elements and their caption source can be resolved.

<Frame caption="A selected word connects the canvas, caption rail, and the controls that Studio currently saves.">
  <img src="https://static.heygen.ai/hyperframes-oss/docs/images/studio-captions-panel-v1.jpg" alt="HyperFrames Studio with one caption word selected, word blocks in the caption rail, and position and transform controls" />
</Frame>

## Adjust a word on the canvas

1. Select a caption word. Hold **Shift** to select more than one.
2. Drag the selection, resize it, or rotate it on the canvas.
3. Use the arrow keys for a 1-pixel nudge, or **Shift** + arrow for 10 pixels.
4. Reload the project once to confirm the override was saved.

Position, scale, rotation, color, opacity, font size, weight, and family overrides
are written to `caption-overrides.json` after a short delay.

## Use the timeline to inspect the rhythm

The caption timeline shows one block per word. Select a block to find the same word on the canvas. You can drag an edge to audition different start or end timing, and double-click a word to preview a new group boundary.

<Warning>
  Timing changes, group splits, and Animation-tab changes are live-preview tools in the current
  Studio. They do not survive a reload. Fix words, durable timing, group structure, and reusable
  caption behavior in the caption source or ask the agent to update it, then reopen the project.
</Warning>

This distinction matters: Studio can save word-level visual overrides, but it is
not yet a complete caption-source editor.

Browse [caption components](/catalog/components/caption-highlight) when the source needs a reusable visual treatment.

## Review the result

* Watch with sound.
* Watch once with sound muted.
* Check names and important words against the audio.
* Check captions against cuts, overlays, and changing backgrounds.
* Confirm the final caption disappears cleanly.

If a preview-only edit fixed a real problem, move that change into the source before rendering.

## Related topics

* [Create captions or recut talking-head footage](/guides/captions-and-recuts)
* [Work with voice, sound, and captions](/guides/voice-and-audio)
* [Browse reusable caption treatments](/catalog/components/caption-highlight)


## Related topics

- [Add captions or repackage talking-head footage](/guides/captions-and-recuts.md)
- [Use voice, music, sound, and captions](/guides/voice-and-audio.md)
- [Editorial Emphasis](/catalog/components/caption-editorial-emphasis.md)