# Description of Changes
**What was changed**
- Reworked the initial zoom `useEffect`:
- Early return when `zoom` is unavailable or initial zoom was already
applied.
- Extracted an `attemptInitialZoom` function with a single retry path.
- Introduced proper timeout handles (`timer`, `retryTimer`) and added a
cleanup function to clear them on unmount/re-render.
- Expanded the effect dependency array to include `zoomState` to avoid
stale state issues.
- Switched to nullish coalescing for safer defaulting of
`currentZoomLevel` (`zoomState.currentZoomLevel ?? 1.4`).
- Minor logging adjustments to clarify delayed/failed initialization
paths.
**Why the change was made**
- The previous implementation risked leaving dangling timers and could
re-attempt zoom unnecessarily, causing flicker or inconsistent initial
zoom when the viewport wasn’t ready.
- Including `zoomState` in dependencies ensures the component reacts to
state changes correctly and avoids stale reads.
- Cleanup of timers prevents memory leaks and race conditions during
rapid mounts/unmounts or navigation.
---
## Checklist
### General
- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings
### Documentation
- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
### UI Changes (if applicable)
- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)
### Testing (if applicable)
- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Reece Browne <74901996+reecebrowne@users.noreply.github.com>
