# Description
Implemented custom page selection for the pdf-to-image feature, allowing
users to specify which PDF pages to convert to images.
1. Variable Renaming: Changed singleOrMultiple to imageResultType
because it supports three options: single, multiple, and custom.
2. New Field: Added pageNumbers to accept user-defined page selections.
This field appears only when custom is selected in the UI.
3. New Method: Added getPageIndicesToConvert to process and validate the
specified page numbers.
4. Method Update: Updated convertFromPdf to handle custom page numbers,
ensuring only selected pages are converted.
5. Translation Properties: Added two new English translation properties,
custom and customPageNumber, to all language files with placeholder
values. These will need to be translated into country-specific languages
in the future.
Note: If an invalid page number is provided (zero, negative, or exceeds
page count), a single image containing all PDF pages is generated.
Closes#918
## Checklist
- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have performed a self-review of my own code
- [x] I have attached images of the change if it is UI based
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] If my code has heavily changed functionality I have updated
relevant docs on [Stirling-PDFs doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
- [x] My changes generate no new warnings
- [x] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)
---------
Co-authored-by: Sai Kumar J <saikumar@Sais-MacBook-Air.local>
Co-authored-by: Ludy <Ludy87@users.noreply.github.com>
Co-authored-by: saikumar <saikumar.jetti@gmail.com>
Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
