Hey @inhum, 
Thanks for reporting the issue with the PDF file size not reducing after deleting pages in ONLYOFFICE Desktop Editors!
It sounds similar to two existing threads:
- PDF file size stays the same after deleting several pages
- How can I reduce the size of a PDF by deleting some pages in desktop editors
We’ve logged this as a known issue. We’re considering an option to overwrite the PDF content properly, but unfortunately, I don’t have a timeline for this fix yet. I’ll notify you as soon as we have updates!
If your case is different (e.g., specific file types, unique steps, or outcomes), could you share more details or a sample PDF file (via Google Drive/kDrive) and a video showing your steps (selecting, deleting pages, saving)? This would help confirm if it’s the same bug or something new.
Appreciate your patience 