iOS annotations causing parsing problems
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- Dominant language
- PHP
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Description
When trying to edit a PDF containing an annotation made on an a iPhone device the library returns a strange binary/hex string.
This only applies to the annotation made on IO's, if the annotation is changed using Preview on MAC OS. The file can be processed correctly.

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
The issue names no source files, tests, or parser entry points. Reproduce the problem with a PDF containing an annotation made on an iPhone and compare it with the same annotation changed in Preview on macOS; done means iPhone annotations are processed without returning a binary or hexadecimal string.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- php
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100