Such files may be many gigabytes in size and thus cannot be reasonably kept all in memory at one time.

Sorry, but what you are requesting is a fundamental conflict between integrity and your perceived usability needs.Īcrobat / Reader actually reads and writes from and to PDF files that it has open. PDF-Xchange on the other hand also blocks the file. SumatraPDF doesn't allow creating annotations and has very limited support for viewing them (e.g. However, I specifically need the ability for third-party software (Dropbox) to change a file, which I have (intentionally or not) left open after writing or viewing annotations. The most common workaround is using SumatraPDF for use with LaTeX or other software that needs to overwrite a PDF frequently. It most recently observed the problem with Adobe Reader DC 17.009.20044, but has existed already when I first used LaTeX almost 10 years ago.

Is it possible to prevent Adobe Reader DC from locking files and, ideally, to make it reload the file automatically if it was changed on disc? The latter would be required to avoid accidentially overwriting a file synced from another device with a previous state.

Dropbox will be unable to synchronize changes made on mobile while the document is opened (e.g.

It makes Adobe Reaser DC unsuitable for viewing work-in-progress plots saved as PDFs for use in pdfLaTeX.

LaTeX documents cannot be recompiled while viewed in Adobe Reader DC.

Under Windows, when Adobe Reader DC opens a file, it reserves exclusive write-access. TLDR: I need to view and create annotations without blocking Dropbox or other third-party software from changing the PDF.

Sumatrapdf reader