[Feature]: Pick up where you left off

[Abdelaziz18003]

Is the feature relevant to the Firefox PDF Viewer?

Yes

Feature description

As someone who uses Firefox (which uses PDF.js under the hood) as the default PDF viewer on my daily taks, I am missing the feature of picking up where I left off, where the PDF file opens on the page I closed it on last time. This will be a really usefull feature when reading long books inside Firefox and other products using this library.

I don't know if there are any relevant workarounds for now, but I was thinking of creating an extension that saves the current scroll value in localstorage and automatically scrolls to it in the next time the same file is opened.

Other PDF viewers

Edge has this feature by default, if you open a PDF, scroll down and closed it, then re-open it, you will land on the same page you left off.

I am new to this project. However, I have experience with Javascript and I am open to contribution if given some guidance.

Regards

[Snuffleupagus]

The GENERIC viewer already supports this, through the use of localStorage.
However, the Firefox PDF Viewer purposely uses sessionStorage; please refer to PR #4559.

[Abdelaziz18003]

Got it, thanks @Snuffleupagus for the quick reply