Multiple people edit a PDF file at the same time

Collaborative editing of a PDF file by multiple people at the same time can be achieved using various online tools and platforms. Here are some options to consider:

Google Drive: 

You can upload a PDF file to Google Drive and share it with multiple people, granting them editing access. The document can then be edited simultaneously, and changes will be saved in real time.

Microsoft SharePoint: 

SharePoint is a collaboration platform that allows multiple people to edit a document simultaneously, including PDF files. Users can access the document from any device with an internet connection, and all changes are saved in real time.

Adobe Acrobat DC: 

Adobe Acrobat DC is a PDF editing tool that offers a shared review feature, allowing multiple people to review and comment on a PDF document simultaneously. Users can see each other's comments and changes, and the document owner can accept or reject the suggested edits.

Dropbox Paper: 

Dropbox Paper is an online collaboration tool that allows multiple people to edit a document simultaneously, including PDF files. Users can leave comments, suggest changes, and edit the document in real time.

Overleaf: 

Overleaf is an online tool that allows multiple people to collaborate on LaTeX documents, including PDF files. Users can edit the document simultaneously and see each other's changes in real time.

When using any of these platforms, it's important to ensure that all collaborators have the necessary permissions to edit the document and that changes are saved regularly to avoid any loss of data.