[Feature]: Auto-update ToC/Outline item while scrolling
Nobody has claimed this yet.
- Dominant language
- JavaScript
- Stars
- 53.9k
- Forks
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- Avg merge
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- Merged PRs (30d)
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Description
Is the feature relevant to the Firefox PDF Viewer?
No
Feature description
When working with long or complex documents, I find it difficult to keep track of my current location within the Table of Contents.
It would be a great quality-of-life improvement if the Table of Contents could automatically highlight the active section/chapter as I scroll through the PDF.
Thanks!
Other PDF viewers
Okular and Sumatra PDF implement similar functionality.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No file, test, or entry point is named. Start by locating the PDF viewer's Table of Contents/Outline UI and document scrolling behavior, then clarify how the active section should be determined and highlighted; done means the current chapter remains visibly selected while scrolling through long documents.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- frontend
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100